Minecraft 1.17 (Caves and Cliffs Update) is here! This script and guide are written to help you get a great performing Raspberry Pi Minecraft server up and running in only a few minutes.
This is the standalone version. It runs on most flavors of Linux and should work on most architectures as well (arm, aarch64, etc.).
I highly recommend using Docker over the standalone version for most people. Installing Docker is as simple as sudo apt install docker.io. There are 3 Docker options available:
Sets up Minecraft as a system service with option to autostart at boot
Automatic backups to minecraft/backups when server restarts
Updates automatically to the latest version when server is started
Easy control of server with start.sh, stop.sh and restart.sh scripts
Optional scheduled daily restart of Pi using cron
Requirements
Raspberry Pi model with 1 GB of RAM or higher. Basically a Raspberry Pi 2B or higher. (No Zero unfortunately, 512MB is not enough RAM to do this, I’ve tried!)
Headless Linux distribution such as Raspbian Buster Lite, Ubuntu Server 18.04.2, or any Debian based distribution (GUI distros can be used at the expense of available RAM and server performance)
Solid state drive highly recommended but not required. You can get a SSD setup on a Pi for less than most Micro SD cards cost. See my article here for details
The Raspberry Pi 4 is available in different memory configurations all the way up to 8 GB. It’s about the size of a credit card and uses an extremely low amount of power making it ideal for all sorts of projects and ideas!
The Raspberry Pi 400 kit includes everything you need for a full Pi 400 desktop build. The Pi 400 is the fastest Raspberry Pi ever released and comes in the form factor of a keyboard!
The Kingston A400 has been a great drive to use with the Pi for years. It’s reliable, widely available around the world, has low power requirements and performs very well. It’s also very affordable. This drive has been benchmarked over 1000 times at pibenchmarks.com and is the #1 most popular SSD among the Pi community!
The USB 3.1 variant of the StarTech 2.5″ SATA adapter works well with the Pi 4. The USB 3.0 variant doesn’t have firmware updates available and is not recommended.
The SanDisk Extreme A1-A2 SD card has the best scoring SD card on Pi Benchmarks for years and is second in popularity only to the SanDisk Ultra (often included in combo kits). The application class (A1) means random I/O speeds (very important when running an OS) have to meet a higher standard. There’s no benefit on the Pi for A2 right now so get whichever is cheaper/available.
The most important consideration when choosing which flavor of Linux to run the server on is simple: available RAM. Headless Linux distributions such as Raspbian Lite that don’t have a built in GUI have
Our biggest obstacle when running a Minecraft server on the Pi is available RAM since 1 GB is extremely low for this type of server. To have a playable experience you should not be running anything else on the Pi so all memory is available to be used.
After testing on many different distros I am finding Raspbian Lite and Ubuntu Server 18.04.4 32-bit to be the best choices. These distributions come with very few background processes and have rock solid support and performance.
64-bit vs 32-bit
There’s a lot of discussion in the Pi world about the up and coming aarch64 64-bit distributions vs. armhf 32-bit distributions. They have been and continue to improve dramatically. There are already use cases where 64-bit is far superior such as video encoding, advanced compression, etc.
So how about for running a Minecraft server? I have been testing extensively with Ubuntu Server 18.04 64-bit and the Debian Buster 64-bit. I have consistently had worse performance and stability than on 32-bit versions of the exact same distros.
But how can that be? It’s certainly true that Minecraft servers benefit in CPU performance from 64-bit versions of Java. The answer is actually incredibly simple: memory. The server running on a 64-bit Java Virtual Machine uses a minimum of about 100 MB more memory. This makes perfect sense because 64 bits > 32 bits by definition!
The Raspberry Pi’s 1 GB of memory has been the biggest obstacle for this project since the very beginning. Back when I first went into the Paper Minecraft developer IRC room and told them what I was trying to do I was practically laughed out of the chat room for even thinking of trying this. Most Minecraft server branches including vanilla can’t even start on the Pi because of the limited memory.
For a dedicated Minecraft server on the Pi I very highly recommend staying 32-bit. You will have more available memory which means it will be much faster and more stable. Since memory is our bottleneck the increased CPU throughput does not help us and losing *any* of our memory is disastrous!
If the Raspberry Pi 4 has more memory like we all expect it to this recommendation will change completely. Even 2 GB of memory would make the extra memory that 64-bit uses a non-issue and the CPU throughput performance gains very desirable. For now though stay 32-bit for a Minecraft server!
Tested Distributions
Raspberry Pi OS – It’s Raspbian. It has very low memory usage and is the official distribution of the Raspberry Pi. The server runs very well on this. It’s overall the best choice. The Buster release has made OpenJDK 11 available on it so it’s no longer behind the rest of the distros.
Ubuntu Server 18.04 / 20.04 – Ubuntu Server is my favorite Linux distro. I use it for nearly all of my projects. The performance of the 32-bit armhf version is on par with Raspbian. It’s a great choice! Click here for my Ubuntu setup guide for Raspberry Pi. The 64-bit version is not a fantastic choice and not recommended because of the higher memory usage. Stick with 32-bit and you’ll be a happy camper with Ubuntu Server.
Debian Buster 64-bit – Debian is the distribution Raspbian is based on. This version is a preview of Debian “Buster” which is the successor to Stretch and will be the next version of Raspbian when it is released. I like this distribution but it is currently still unofficial and unsupported. Performance and stability was less than Ubuntu and Raspbian.
Minecraft Server Installation
SSH into your Raspberry Pi and paste the following commands:
The script will setup the Minecraft sever and ask you some questions on how to configure it. I’ll explain here what they mean.
“Enter amount of memory in megabytes to dedicate to the Minecraft server” – The amount of memory that will be dedicated to the Minecraft server. The more the better, but you must leave some room for the operating system background processes.
If you exceed the total available memory either the server will crash or the Pi will get incredibly slow to the point where your SSH session will start timing out. The setup script will make a recommendation to you which is your available memory – 10% for headroom. If you aren’t sure what to put just go with the recommended amount.
Note for Raspberry Pi 4: Currently on 32-bit Raspbian 2700 MB is the maximum that Linux will let us allocate in a 32 bit environment. The script has been updated to check for this as the server will not start if it is set over 2700M on a 32 bit server. 64 bit operating systems will be able to allocate all available memory as Pi 4 support rolls out for them.
“Start Minecraft server at startup automatically (y/n)?” – This will set the Minecraft service to start automatically when your Pi boots. This is great because whenever you want to play you can just plug it in and go without having to SSH in.
“Automatically reboot Pi and update server at 4am daily (y/n)?” – This will add a cron job to the server that reboots the Pi every day at 4am. This is great because every time the server restarts it backs up the server and updates to the latest version. See the “Scheduled Daily Reboots” section below for information on how to customize the time or remove the reboot.
That is it for the setup script. The server will finish configuring and start!
Check Java Version
Sometimes if you have multiple versions of Java installed the wrong version of Java will be selected as the default. If the server didn’t start check that the right version of Java is selected with this command:
sudo update-alternatives --config java
If you get the message “update-alternatives: error: no alternatives for java” then you only have one version of Java installed and can skip to the next section.
If you are presented with a list of choices then your machine has multiple versions of Java installed. It will look like this:
update-alternatives: warning: /etc/alternatives/java has been changed (manually or by a script); switching to manual updates only
There are 2 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
0 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1101 auto mode
1 /usr/lib/jvm/java-11-openjdk-amd64/bin/java 1101 manual mode
2 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode
You will usually want to just select the newest version of OpenJDK that is listed so you would type 0 and press enter. In some cases on some platforms you may want to switch to the official Oracle JDK although I strongly recommend sticking with OpenJDK!
First Run
The first time you run the server it will take a little longer to start since it is generating all the server data. If you try to log in before it fully starts you will get a connection timeout error. Watch for the line: “Timings Reset”. This is the last line that prints when the server is ready to rock and roll. At this point you will be able to connect successfully.
The very first time you log into the server it will be slow for about 1-2 minutes. This is because since nobody has logged in before the server has to scramble to generate all the chunks within your view distance (10 by default) and send them to you/store them. During this time you may not be able to see very far and if you try to destroy blocks there will be noticeable lag from when they break to when they actually disappear.
Don’t panic! This will go away within a couple of minutes as the Pi catches up with all the first time login stuff it needs to do. Performance stabilizes and it will feel very much like the offline experience after that.
If you are hosting for a few friends I’d recommend logging in for the first time right after you set up the server instead of having several people nail a blank server at first startup. This gets it out of the way and when everyone is ready to log in the starting area chunks will be fully fleshed out and the Pi just has to read them. It’s an order of magnitude faster for the Pi to read chunks than to generate and store chunks.
In my experience after the initial login exploring new parts of the server doesn’t cause any lag even though new chunks are being generated. The reason for this is that when you’re walking it’s really only having to generate a new chunk as you get close to the border instead of a huge square area of chunks in all directions and all at the same time like during the first login.
Benchmarking / Testing Storage
If you’re getting poor performance or just want to verify everything is working correctly you may want to run my storage benchmark with:
Now press Ctrl+X to exit nano and answer “y” to save. Now let’s run the script:
chmod +x SetupMinecraft.sh ./SetupMinecraft.sh
And the setup will run and install the version of Minecraft you set at the top of the file!
Changing Minecraft Client Version
If you are wisely running the “stable” branch instead of the “development” branch there will be times where you need to select the version of Minecraft to run otherwise you will get an error message that your client is outdated when you try to log in.
Fortunately this is very easy. Open up the Minecraft launcher and instead of hitting “Play” choose “Launch Options” in the menu at the top of the window. It will look like this:
Minecraft Launcher “Launch Options” Tab
Click the “Add new” button and pick which version you want to add. You can optionally gave it a name or just click save.
Now when you go back to the “News” tab you will see a dropdown arrow where you can select which version of Minecraft you want to play!
Start, Stop and Restart Server
The server can be started, stopped and restarted two different ways. You can use the provided scripts in the Minecraft folder or you can use systemctl. Here are the commands:
The server backs up each time it starts. This helps you recover easily if something goes wrong. This system works best if you configured the server to restart daily since it means you will have a backup every day.
To access these backups type:
cd ~/minecraft/backups ls
When a backup is made the filename will be the date and time the backup was taken. If you need to restore a backup it’s very easy. Substitute the timestamp in my example to the backup you want to roll back to. Type:
cd ~/minecraft
./stop.sh
rm -rf world world_nether world_the_end
tar -xf backups/2019.02.15.22.06.30.tar.gz
./start.sh
Your world has now been restored! It’s a good idea to download these backups off the Pi periodically just in case the Pi’s storage fails.
Scheduled Daily Reboots
The daily reboots are scheduled using cron. It’s very easy to customize the time your server restarts.
To change the time that the server restarts type: crontab -e
This will open a window that will ask you to select a text editor (I find nano to be the easiest) and will show the cronjobs scheduled on the Pi. The Minecraft one will look like the following:
0 4 * * * /home/ubuntu/minecraft/restart.sh
There are 5 fields here. The default restart time is set to reboot at 0 minutes of the 4th hour of the day (4 AM). The other 3 fields are left as * to represent every day of every month. Make any desired changes here and press Ctrl+X to exit nano and update the cronjob.
To remove the daily reboot simply delete the line and save.
Installing Mods / Plugins
The server supports plugins that are compatible with Bukkit / Spigot / Paper. A popular place that you can get plugins is at dev.bukkit.org where there are thousands of them!
To install a plugin you simply download the .jar to the minecraft/plugins folder and restart the server. For example, WorldGuard is a very popular plugin that lets you add protection to different areas of your server.
To install this plugin on our Minecraft server we would use the following commands:
cd ~/minecraft/plugins
curl -H "Accept-Encoding: identity" -H "Accept-Language: en" -L -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.12.212 Safari/537.36" -o worldguard.jarhttps://dev.bukkit.org/projects/worldguard/files/latest
sudo systemctl restart minecraft
The reason the middle line is so long is that “robots” (roughly anything that isn’t a web browser being used by a user in this context) including scripts and utilities are blocked by the Bukkit server. The extra parameters we’re including in this line will add the location (-L) flag as well as a user agent and an identity / language header which will allow us to fetch the files without getting a 403 forbidden error.
Make sure to change “-o worldguard.jar” (second to last parameter) and the URL (very last parameter) to match the project you want to download.
The server will restart and the plugin will be installed. It’s that simple! To use the plugin refer to the documentation on the plugin download page to find out which commands you use to configure/interact with it.
Warning: be advised that plugins are the #1 issue for performance degradation on Minecraft servers. This isn’t because all plugins are bad. Some plugins are coded very inefficiently or perform features that require a lot of hooks in the code.
You should be careful about what plugins you install on the server and if you start having bad performance disable your plugins one by one until you find the culprit!
Reconfigure / Update Scripts
The scripts can always be reconfigured and updated by downloading the latest SetupMinecraft.sh and running the installer again. It will update all of the scripts in the Minecraft directory and reinstall the startup service for you.
Running SetupMinecraft.sh again will also give you a chance to reconfigure options such as the memory dedicated to the server, daily reboots, starting the server on boot, etc.
This will not overwrite your world or any other data so it is safe to run!
Port Forwarding
If everyone on your server is on the same LAN or WiFi network as you then you don’t need to do this. If you want people to connect from outside your local network then you need to set up port forwarding on your router.
The process for this is different for every router so the best thing to do is just look at your router and find the model # and put that in google with port forwarding for easy instructions on how to do it for your specific router.
You want to forward port 25565. The type of connection is TCP if your router asks. Once you do this people will be able to connect to your Minecraft server through your public IP address. This is different than your local IP which is usually a 192.x.x.x or 10.x.x.x. If you don’t know what that is just go to google and type “what’s my ip” and Google will kindly tell you!
Wired vs. Wireless
Going with an ethernet (wired) connection is going to be faster and more reliable. There’s so much wireless traffic and other interference in the air that running your server on WiFi is not recommended.
Even if it is working great 99% of the time it can ruin your experience very quickly if the WiFi drops for a couple of seconds and you get blown up by a creeper!
All that being said, the server works fine on wireless. The script will work fine as is with a wireless connection.
Upgrading
PLEASE BACK UP YOUR SERVER FIRST! The server makes automated backups by default for you in the backups folder but I recommend you back up the entire server folder yourself (basically the entire minecraft folder) any time you attempt to upgrade or downgrade. If you need to roll back to older versions it won’t work without a backup from that version or older!
The easiest way to upgrade an installation is to download the latest SetupMinecraft.sh and run it. This will automatically upgrade you to the latest version.
Upgrading and downgrading to versions that aren’t the default the script chooses is pretty simple. Simply change the Version line at the top in the SetupMinecraft.sh script:
#!/bin/bash # Minecraft Server Installation Script - James A. Chambers - https://jamesachambers.com # More information at https://jamesachambers.com/raspberry-pi-minecraft-server-script-with-startup-service/ # GitHub Repository: https://github.com/TheRemote/RaspberryPiMinecraft
# Minecraft server version Version="1.16.1"
Edit this file in your favorite text editor (you can use nano or vi on the Pi like nano SetupMinecraft.sh) and change the Minecraft version to what you want.
Downgrading
PLEASE RESTORE USING A BACK UP FROM THE VERSION YOU ARE DOWNGRADING TO
If you are having problems on a newer version of Minecraft and want to downgrade you can do so using a complete backup of your server before you ran it on a newer version.
The reason you can’t take server data that has been touched by a version such as 1.17 and go back to 1.16 is that the new version adds all sorts of new data types/structures for the new content into your server data files. If you try to roll back the old versions of the Minecraft server will not understand these data types since they didn’t exist in that version and will crash.
As long as you use a backup for your server files from that version (or older) it’s as simple as changing the version in SetupMinecraft.sh just like I show in the “Upgrading” section.
You can upgrade any old version of Minecraft to any version, but again make sure you have a backup first as it is a one way street and you will need that backup if you want to roll back!
Troubleshooting Note – Oracle Virtual Machines
A very common problem people have with the Oracle Virtual Machine tutorials out there that typically show you how to use a free VM is that the VM is much more difficult to configure than just about any other product / offering out there.
It is because there are several steps you need to take to open the ports on the Oracle VM. You need to both:
Set the ingress ports (TCP/UDP) in the Virtual Cloud Network (VCN) security list
*and* set the ingress ports in a Network Security Group assigned to your instance
Both of these settings are typically required before you will be able to connect to your VM instance. This is purely configuration related and has nothing to do with the script or the Minecraft server itself.
I do not recommend this platform due to the configuration difficulty but the people who have gone through the pain of configuring an Oracle VM have had good experiences with it after that point. Just keep in mind it’s going to be a rough ride through the configuration for most people.
Troubleshooting Note – Hyper-V
There is a weird bug in Hyper-V that breaks UDP connections on the Minecraft server. The fix for this is that you have to use a Generation 1 VM with the Legacy LAN network driver.
Version History
To view the version history check out the GitHub README here:
Great question, absolutely! When I developed the script I mainly did it on x86_64 even though it’s heavily marketed for Raspberry Pi on this version. It definitely works with all platforms.
Ubuntu is actually my favorite choice and what I am using for my main desktop OS. Hopefully that helps!
Absolutely, no problem! I have done this as well. I’ve started servers on the Pi that grew to be really big and moved them to a x86_64 server as well in the past. You can pretty much use it as is!
CardinalFang36
1 year ago
James,
My server did not start last night. Manually attempting to run the java command line, I get:
Unsupported Java detected (62.0). Only up to Java 17 is supported.
My Mac informed me that it was installing a new version of Java today, so I am suspecting the same happened with my RPi.
The new version doesn’t use the system JDK anymore. I have no idea if it will work on Mac though. It actually downloads it’s own JRE.
I’d try installing the new one on both of them. It doesn’t look like the Mac Java’s version number is even standard (it is picking up version 62). It’s essentially a Linux JRE though but maybe it will still work with Mac. Definitely let me know what you find!
The Mac has nothing to do with this…just a coincidence that it (and every other machine I own) wanted to update Java today. The error message was from my Raspberry Pi (running the Minecraft server and your script)
Absolutely. This is the same issue for sure. OpenJDK 18 is released and OpenJDK 17 is discontinued. Makes no difference which platform and OpenJDK is doing it’s normal thing of basically forcibly discontinuing the old version (it’s not a LTS version so it no longer is receiving security updates which is why everyone moves to the new version as that is unsafe).
Minecraft will not work with OpenJDK 18 or higher. The new version no longer uses the system Java version (on any system, Mac, Pi, etc.). Basically it downloads it’s own version of OpenJDK 17 that is used only for Minecraft so the system version no longer makes any difference and is basically not used at all. It just needs an update with SetupMinecraft.sh and that should get it going!
I reran curl https://raw.githubusercontent.com/TheRemote/RaspberryPiMinecraft/master/SetupMinecraft.sh | bash and then did start.sh and it is up and running again.
It seems Setup loads the custom OpenJDK. I wonder how the JDK was altered? Does start.sh do that as well?
You’re exactly right! Basically this is all there is to it:
curl -H "Accept-Encoding: identity" -H "Accept-Language: en" -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4.212 Safari/537.36" https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_arm_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
This downloads the “Adoptium” Temurin OpenJDK which is a freely available binary OpenJDK distribution and unzips/untars it. It puts this in a folder called “jre” in your minecraft folder.
Now the sneaky trick I’m using to not change the system JDK is calling this directly like this upon launch in start.sh:
Basically you can see here I’m directly calling the “java” binary we downloaded and placed in the Minecraft folder. This is a fully qualified path basically right to Java so that we don’t have to rely on the system version anymore. The old method just called “java” which uses the built in system Java.
I was forced to do this and the script has got a lot of new users because it’s not fun to do it manually (especially if you aren’t very comfortable with the CLI). This was the cleanest solution and although it seemed daunting at first to try to control OpenJDK in the end I like the result better than how it was before. That OpenJDK issue has been a thorn in my side for years. Now we are in *complete* control of the OpenJDK version and we don’t have to mess with the system’s at all!
Yesterday (or whenever the server stopped), my start.sh didn’t have the fully qualified path to the custom Java binary. But now it does. I suspect that was fixed when I re-ran SetupMinecraft.sh.
Absolutely! The scripts won’t update themselves (by design). They’ll only update Minecraft if that makes sense. It was absolutely running SetupMinecraft.sh again that downloads the latest one from GitHub and will put any new changes through.
The reason it doesn’t do this is if it did I would basically have a botnet of Minecraft servers that connect to my GitHub account and would run whatever I tell them to. I could absolutely do this easily if we had a need (if circumstances changed where updates were being pushed a lot more frequently) but I definitely like maintaining that boundary where you don’t have to worry about my GitHub account getting hacked and thousands of servers running malicious code from it (as a theoretical scenario).
The way it works now is the scripts can’t and won’t change unless you specifically tell them to by running SetupMinecraft.sh (which isn’t automated). It’s a fully offline system other than connecting to the Paper servers to download security updates/fixes. Theoretically Paper’s servers could get hacked but they’re aware of this as is Microsoft and have a lot more resources to make sure that their setup stays safe and has the necessary safeguards in place (costs money and time).
If this happened with my current setup the worst they could do is get a handful of people installing fresh (before I could contact GitHub and freeze the account) but if I automated this they could get thousands of machines extremely quickly. If I ever had to move to automatic updates I was responsible for I would spend the money and time to secure the servers to an extreme degree to make sure that wouldn’t happen but we haven’t had a need to do that yet.
Generally there aren’t very many changes but any time this happens with OpenJDK I’ve had to do a bunch of them. Hopefully with this new method things will be more stable as I shouldn’t need to change it until the Minecraft server requirements change (theoretically)!
Gruntzilla
2 years ago
(In my best GeorgeNotFound voice: “Jaaaaaaaaaaaaaaaaaaaaaaaaaaaaaames…”)
Back again, the children are bored of SMP and Bedrock’s world downloads / command mods are not cutting the mustard! (The Bedrock SMP on oracle runs flawless since the ip change / firewall thing, but I sometimes think that 1gb RAM is a problem too.)
The ssh / server startup works great, looks fine on the server itself, but sure enough, “Unable to connect to world”… so here’s the back-story and a few refreshers, in case you can help, (or in case me spelling it out points me at some more comment threads below all over again!)
I’m catering to a bunch of 6 year olds with ipads and a couple laptops, so, clients are going to be bedrock.
I got really brave, and used this guide to set myself up 1 (of 2 to come?) Ampere/ARM 2 core / 12GB RAM oracle cloud servers using this guide (for the oracle config, not the java/minecraft setup.) I also chose Ubuntu 20.04 instead of their suggestion, because I remembered from your last guide. Unfortunately it only allows 64 bit, (but, since your guide says 32bit is mostly due to 1gb RAM performance, I selectively decided to trudge forward.
I used the Oracle Developer Blog guide.
I created my own users like you recommended from the bedrock server guide, (maybe something changed, but this time around it was behaving odd and automatically asked for password after the first command, and the next 2 lines failed with ‘already created’ and started asking for passwords instead of SSH, but I sorted all that out and it’s working fine anyway.
I tried using that account without being in sudoers, but it seems like this script depends on the extra permissions? correct me if I’m wrong, I can go back and try again and get the errors, but promoting the account seems to have created a perfect install anyway.
So, once promoted, I ran the install script flawlessly, everything looked perfect server runs great. (Coming back to this step later, I realized it doesn’t connect here either though.)
Used this (pi/java) guide for plugins to fire up some Bedrock connectivity, installing GeyserMC, and Floodgate for MS/xbox auth. those command lines (pasted in full below) also worked flawlessly
Navigated to minecraft/plugins and and ran these 2 lines,then fired up the server again.
curl -H "Accept-Encoding: identity" -H "Accept-Language: en" -L -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.12.212 Safari/537.36" -o floodgate-Spigot.jar https://ci.opencollab.dev/job/GeyserMC/job/Floodgate/job/master/lastSuccessfulBuild/artifact/spigot/target/floodgate-spigot.jar
curl -H "Accept-Encoding: identity" -H "Accept-Language: en" -L -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.12.212 Safari/537.36" -o Geyser-Spigot.jar https://ci.opencollab.dev/job/GeyserMC/job/Geyser/job/master/lastSuccessfulBuild/artifact/bootstrap/spigot/target/Geyser-Spigot.jar
Amidst the firewall changes below, I also updated the same ports in server.properties and Geyser-Spigot/config.yml
(I tried setting an IP in both of those too, but they seemed to suggest blank/auto worked better in the comments, and taking them out
burned a few hours trying iptables commands but I noticed they didn’t seem to do anything, so I switched to UFW
Added the same Ingress rules to Oracle (UDP+TCP), and again in UFW allow in for each of the entries below (spread across a horrible amount of attempts to add reboot open/connect/fail/close minecraft.)
25565/tcp ALLOW IN Anywhere (java default?)
25565/udp ALLOW IN Anywhere
22333/tcp ALLOW IN Anywhere
22333/udp ALLOW IN Anywhere
19132/tcp ALLOW IN Anywhere Geyser seems to default to taking over 19132 by default, but I managed to change that (to no advantage.)
19132/udp ALLOW IN Anywhere
19133/tcp ALLOW IN Anywhere
19133/udp ALLOW IN Anywhere
19888/tcp ALLOW IN Anywhere
19888/udp ALLOW IN Anywhere (19888 is actually the port I chose to make the actual oracle/bedrock server finally work last time, but no joy)
(Geyser is some kind of magical bedrock > Java client command translating proxy, and floodgate apparently handles the MS/xbox live account client authorization for java servers)
just for reference, I’m going to paste the console output for the paper/geyser/floodgate startup just because it pointed me at a few port settings even though it didn’t work.
the 0.0.0.0 near the end is just default, and changing it tanks server startup with pages of weird java packag/zip errors that I won’t get into. (The comments in the file say ‘leave it’ anyway.) Starting org.bukkit.craftbukkit.Main
System Info: Java 17 (OpenJDK 64-Bit Server VM 17.0.2+8) Host: Linux 5.13.0-1025-oracle (aarch64)
Loading libraries, please wait...
[01:59:36 INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[01:59:38 INFO]: Loaded 7 recipes
[01:59:40 INFO]: Starting minecraft server version 1.18.2
[01:59:40 INFO]: Loading properties
[01:59:40 INFO]: This server is running Paper version git-Paper-284 (MC: 1.18.2) (Implementing API version 1.18.2-R0.1-SNAPSHOT) (Git: e42d683)
[01:59:40 INFO]: Server Ping Player Sample Count: 12
[01:59:40 INFO]: Using 4 threads for Netty based IO
[01:59:40 INFO]: Default game type: SURVIVAL
[01:59:40 INFO]: Generating keypair
[01:59:40 INFO]: Starting Minecraft server on *:25565
[01:59:40 INFO]: Using epoll channel type
[01:59:40 INFO]: Paper: Using libdeflate (Linux aarch64) compression from Velocity.
[01:59:40 INFO]: Paper: Using OpenSSL (Linux aarch64) cipher from Velocity.
[01:59:40 INFO]: [floodgate] Loading floodgate v2.1.0-SNAPSHOT
***** This warn is a known (and non-) issue ******** [01:59:41 WARN]: [floodgate] en_ is not a supported Floodgate language.
[01:59:41 INFO]: [floodgate] Took 543ms to boot Floodgate
[01:59:41 INFO]: [Geyser-Spigot] Loading Geyser-Spigot v2.0.2-SNAPSHOT
[01:59:41 INFO]: Server permissions file permissions.yml is empty, ignoring it
[01:59:41 INFO]: Preparing level "world"
[01:59:47 INFO]: [floodgate] Enabling floodgate v2.1.0-SNAPSHOT
[01:59:48 INFO]: [Geyser-Spigot] Enabling Geyser-Spigot v2.0.2-SNAPSHOT
[01:59:48 INFO]: [Geyser-Spigot] Auto-loaded Floodgate key
[01:59:48 INFO]: [Geyser-Spigot] ******************************************
[01:59:48 INFO]: [Geyser-Spigot]
[01:59:48 INFO]: [Geyser-Spigot] Loading Geyser version 2.0.2-SNAPSHOT (git-master-0803c5d)
[01:59:48 INFO]: [Geyser-Spigot]
[01:59:48 INFO]: [Geyser-Spigot] ******************************************
[01:59:51 INFO]: [Geyser-Spigot] Loaded Floodgate key!
[01:59:51 INFO]: [Geyser-Spigot] Started Geyser on 0.0.0.0:19888
[01:59:51 INFO]: [Geyser-Spigot] Done (3.007s)! Run /geyser help for help!
[01:59:51 INFO]: Running delayed init tasks
[01:59:51 INFO]: Done (11.871s)! For help, type "help"
[01:59:51 INFO]: Timings Reset
Running out of night owl-hours, so I thought summing it up for myself for a restart point was a great chance to get a second opinion anyway, would love it if you spotted anything I clearly just missed.
I think tomorrow I’ll see if I can replicate the firewall swap last time and maybe uninstall UFW to install firewalld (though I swear I did the opposite last time). So far getting of 19132 to 19888 wasn’t the perfect fix I hoped, (but since there are more ports in play now, I wonder if I didn’t put the right variants in the right places.
Thanks for your amazing guides anyway, Starting to feel amateur-hour ‘comfortable’ with committing Ubuntu command line stuff to memory as a side benefit!!!
What a project! I follow 100% actually here. It honestly looks like you’ve done it to me. The server is starting and everything looks okay in the logs.
Changing the ports was going to be my first suggestion. Use zero of the default ports. Change 19133 as well (that’s the IPv6 port). It seems to be a bug with the default ports. It has fixed almost every cloud instance we have seen.
It’s only the Oracle VMs that do this and we have several documented cases of it for sure. I’m sure you probably have found some of these as you seem to be aware of the issue for sure.
Given that you are having exactly identical symptoms (although for sure with more ports in play than a standard setup) and it’s an Oracle VM we have to be dealing with their network security again. My best guess is they have certain ports “blacklisted” but they don’t tell us because other cloud providers don’t do this. The Bedrock server has known port bugs but the Oracle one is something more I think.
Your startup looks completely clean to me though in those log files and the server looks like it is running. This looks like the dreaded Oracle ports/networking configuration which either doesn’t work as well as Amazon and other competitors or has some kind of blacklist that isn’t public.
I don’t have any reason to believe you need to change the ports outside of 19132 and 19133. It’s possible but I have a feeling that whether we are dealing with a bug or some kind of blacklist that either way the more unusual ports are not likely to be on it. I know there’s tons of Minecraft tutorials out there for the free VM so it would not shock me if they did blacklist those ports or something like that but there’s no way they got the translation layer ports and all of those. As an absolute last resort you could try alternate ports on there as well.
For what it’s worth I think you are really close and that this will probably work if we can get around the networking issues!
James A
2 years ago
@James – Have you looked at Purpur ( purpurmc.org ) – instead of paper? drop-in replacement form of paper?
Not yet but I’m open to using a different one potentially or forking it. I think Aikar has a truly multithreaded version of Paper. I’ve honestly never had any reason to switch it but the OpenJDK issues are pretty annoying lately.
Is there any reason to use this one over Paper or do you have any experience with it? I’m always open to newer things!
Nothing in particular, it appears to be a pretty popular replacement for paper so the performance will be similar to that of paper, and may be better. Given the limited resources of an rPI that seemed like a good idea.
I may end up switching off of rPI onto another machine to run Forge though. My kids keep asking for specific Forge mods they’ve seen online, and there are quite a few that are only Forge and dont work as a bukkit/spigot/paper plugin.
Thanks for the info, I’ll definitely keep that in mind and if you do try one of those let me know what your experience was for sure!
I’ve definitely moved some of my Pi servers onto x86_64 servers before. It shouldn’t be too bad if you do end up having to migrate to a different solution. There’s nothing in the script at least that will cause you any trouble trying to switch as all that is in the folder is basically the start.sh scripts etc.
It may not hurt to keep the Pi server around as a backup / in case they see a mod the next week that needs Paper / Spigot as well but I totally understand however it goes and if you have any trouble / questions would definitely help if you need me!
kevin
2 years ago
Hi,
about one week ago my server suddenly stopped working after running fine for about 5 months (last updated the minecraft-version when 1.18 was released). I first thought it was about the new jdk which was released few time ago, but after updating it my server still doesn´t start. I already reinstalled but still nothing changed. When i try using the start.sh i get an error which is like “tail: ” cannot be opened for reading: file not found” (which is translated from german, i don´t know how the original translation would look like…). I ran out of ideas how to fix my issue and i hope you can help me.
I think I can explain what the messages are saying here. The “tail” command is a command that prints the last X number of lines from a file. What it is trying to do is read your servers logs file from the “logs” folder.
My guess is that this file doesn’t exist because the server isn’t starting. There have been some changes. The server now downloads it’s own JDK to avoid issues with the system in general.
I only released this a few days ago. What I would try is try installing the latest version again here with the updated JDK. Most likely you have a JDK installed either below 16 or above 17 (it can’t be 18 or higher anymore). The new version works slightly differently. Can you give that a try and let’s see if we can get things going for you here!
you were right. It was about the JDK version. I had JDK 18 installed, so i manually installed JDK 17. The server was still not starting so looked into the start.sh file and guessed that it was about your JDK installation. I edited the “/home/…/java” to “java” in the last line so the script uses my installation now. After doing this the server immediately started and is running fine.
Thanks for your help.
No problem! The new OpenJDK is just a zip file. I’d be curious what is going wrong with your installation. I just tried it on my x86_64 PC to double test everything out and it installed the first try normally.
Basically newer versions no longer use the system Java. You’ve overridden it to work the old way. It would be interesting to try running the startup line manually to see what error it’s giving. I can’t reproduce this on any platform.
You’ve basically removed the “fix” that fixed it for everyone else basically because the system Java can’t be updated through snap / apt to the correct version on most distros. You are the only one that has had any problems though. They also shouldn’t be happening as the OpenJDK file is just a zip file that has a “java” binary inside it that is the right version without having to reconfigure the entire system with a custom installed JRE/JDK like this.
These manual installs don’t update themselves so it’s usually a security issue to install one without apt/snap installing security patches for it. It won’t be a problem any time soon but if you leave that as the system JDK and a year or two go by then yes at that point you may start having security breaches depending on what has been found / patched since you originally did that manual install. Anything else on the system that uses Java will now also use that OpenJDK if this was done using update-alternatives which can sometimes break other applications and exposes all of them to an unpatched JRE as well.
It was always a lot more janky to try to get a bunch of flavors to get the exact right version over apt/snapd (it’s actually impossible it turns out, now more than ever with Paper Minecraft not supporting either OpenJDK 18+ or OpenJDK 15 or lower). I didn’t want to ask people to have to manually install OpenJDK and use update-alternatives to select the right OpenJDK (extremely difficult to automate, many systems will have multiple JREs/JDKs) as the whole point of the script was to not have to deal with any of that. It’s a security risk as I outlined earlier and some applications installed via apt expect the java version to be the one available in the repositories so it can also break things.
The new method is remarkably simple (but difficult to configure without exact paths) and much less prone to problems than apt/snapd was which broke it for literally everyone. This was a constant source of problems for everyone especially if they weren’t using Ubuntu or Raspberry Pi OS. The updated version should run on anything (at least armhf, arm64 and x86_64).
Does this happen to be on a Pi Zero or something? I think there is a Pi model that may need the non armhf binary but if it’s the Zero that one also only has 512 MB of memory which is definitely a problem for modern Minecraft versions. If you are using an unusual platform though if you let me know what that is I can probably add it in there.
As long as it’s working though I’d just leave it. It definitely seems to me like something else is still going on though so we will have to see if it’s really working or maybe needs one more update / fix. Having OpenJDK 17 is the important part!
I´m pretty aware of the security issues and I´m also still not very happy with my solution. I´m running Raspbian (Linux version 5.10.103-v8+ (aarch64-linux-gnu-gcc-8 (Ubuntu/Linar o 8.4.0-3ubuntu1) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34)) on a RPI 4B with 4GB RAM.
The thing with other applications using this installation of JDK is not a problem because this RasPi is only being used for the Minecraft Server and has a Samba Client running in background.
As you´ve said I will just leave it as it is, because the server is currently running fine without any problems, but if I´ll run into any problems I guess I´ll come back to you.
Agree 100% I’m glad you are aware of the issues as that makes it pretty unlikely that you will forget that it’s set up this way for years at a time.
Basically the easiest way to troubleshoot it would be to look at what output you’re getting in SetupMinecraft.sh (it checks the currently installed JDK and should be failing SetupMinecraft.sh if something is going wrong).
If nothing is going wrong there you would just put the last line of start.sh directly on the command line and run it and see what error it’s giving.
The reason I would wait for now is there are going to be consequences for the current OpenJDK situation and I expect it will all change over the next 6-12 months and that we will have better options available to us before that point. As long as you don’t forget it’s set up like this for years I’m certain you won’t have any problems. Enough time needs to pass for holes/exploits to be found in that current version basically.
We’ll cross our fingers that yours is good to go for now for sure! If anyone else is having this issue (still haven’t heard from anyone else for this issue) the steps above can pretty easily troubleshoot it as by running it directly there’s nowhere the errors can hide!
Just another thin I thought about: is it maybe possible I have to unzip the jre? And I just tried to start the server manually with a .sh file I created and it says for the java file “file not found”. As a path I put “/home/…/minecraft/jre/bin/java”. I don´t get an error for the paperclip.jar (could be because the error with the java occurs first). Maybe you have another idea.
Oh wow, you’re just in time, I was just looking at your last message! So I take it you don’t really have the dots in your path as that is a relative path. If those dots are real instead of a username that would definitely break it.
start.sh does not set up the OpenJDK. It’s all done by SetupMinecraft.sh basically. These all have new code so if there’s any custom changes to the scripts you’d want to run SetupMinecraft.sh and make your changes again basically.
Are you specifying an install directory when you run SetupMinecraft.sh? What does the output look like when it’s installing Java? Honestly SetupMinecraft.sh should fail 100% if you are using the latest version of it. If it runs the new JRE and it doesn’t return version 16 or 17 the installer should exit completely.
If you are doing anything other than just running SetupMinecraft.sh and letting it update the scripts with the latest version that almost certainly would explain it. You shouldn’t even be getting this far with SetupMinecraft.sh as it checks that the JDK was set up successfully. Is this how you’re trying to update it?
The reason I am so confused is to answer your question of can you just unzip the JDK yourself the answer is yes, absolutely. Look at how simple the Java install is (I believe you will understand what you’re seeing after our conversation):
CPUArch=$(uname -m)
if [[ "$CPUArch" == *"armv7"* || "$CPUArch" == *"armhf"* ]]; then
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_arm_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
elif [[ "$CPUArch" == *"aarch64"* || "$CPUArch" == *"arm64"* ]]; then
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_aarch64_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
elif [[ "$CPUArch" == *"x86_64"* ]]; then
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_x64_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
fi
CurrentJava=$($DirName/minecraft/jre/bin/java -version 2>&1 | head -1 | cut -d '"' -f 2 | cut -d '.' -f 1)
if [[ $CurrentJava -lt 16 || $CurrentJava -gt 17 ]]; then
Print_Style "Required OpenJDK version 16 or 17 could not be installed." "$YELLOW"
exit 1
else
Print_Style "OpenJDK installation completed." "$GREEN"
fi
}
That’s it. That’s all it does. It literally does just download a .tar.gz file and run tar -xf. Theoretically all you would need to do is go to your Minecraft folder (if this is a 64 bit OS install otherwise use the armhf version) and do:
But that’s the pickle isn’t it? What is going wrong? Why can’t it download and extract a file, and why is SetupMinecraft.sh completing successfully without realizing it? There really isn’t a lot happening here and if it was broken I would have had dozens of people complaining about it as it has been this way for about a week now. It’s an order of magnitude more simple than it used to work and literally is just extracting a tar file with the JDK in it.
Hopefully that clarifies! I didn’t mean to underestimate your IT familiarity/knowledge in my last replies. It was more that I *don’t* expect people to have those skills necessarily that are using the script which is often the case (and that’s fine, it’s meant to be used by non-experts). I gave more of the juicy details though this time since you are more comfortable with the technicals!
None of this also doesn’t mean there isn’t some kind of mistake or problem with setting up the new JDK. Maybe something weird is happening still. It’s only a week old so I’m not ruling out any problems/mistakes on my part! So far though everyone’s JDK that was killed has had it fixed by running SetupMinecraft.sh which works this way. Yours is the odd one out so far. This could be for many reasons that could be my fault, your fault, or nobodies fault at all. We’ve seen every single one of those possibilities many times over the years. Thanks for your patience working through the issues!
so I just reinstalled the server. I ran SetupMinecraft.sh and after giving it a closer look while installing i noticed a few errors. The whole log with me installing it:
pi@piserver:~ $ curl https://raw.githubusercontent.com/TheRemote/RaspberryPiMinecraft/master/SetupMinecraft.sh | bash
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 16173 100 16173 0 0 48133 0 --:--:-- --:--:-- --:--:-- 47991
Minecraft Server installation script by James A. Chambers - https://jamesachambers.com/
Version 1.18.2 will be installed. To change this, open SetupMinecraft.sh and change the "Version" variable to the version you want to install.
Latest version is always available at https://github.com/TheRemote/RaspberryPiMinecraft
Don't forget to set up port forwarding on your router! The default port is 25565
Installing screen, sudo, net-tools, curl...
OK:1 http://archive.raspberrypi.org/debian buster InRelease
OK:2 http://raspbian.raspberrypi.org/raspbian buster InRelease
Holen:3 http://giteduberger.fr rpimonitor/ InRelease [1.933 B]
Es wurden 1.933 B in 1 s geholt (2.208 B/s).
Update rpimonitor Packages Status
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
curl ist schon die neueste Version (7.64.0-4+deb10u2).
screen ist schon die neueste Version (4.6.2-3+deb10u1).
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
net-tools ist schon die neueste Version (1.60+git20180626.aebd88e-1).
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Enter root directory path to install Minecraft server. Almost nobody should change this unless you're installing to a different disk altogether. (default ~):
Directory Path:
Directory Path : /home/pi -- accept (y/n)?y
Directory Path: /home/pi
Creating minecraft server directory...
Installing OpenJDK...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 691 100 691 0 0 1808 0 --:--:-- --:--:-- --:--:-- 1813
100 42.5M 100 42.5M 0 0 1673k 0 0:00:26 0:00:26 --:--:-- 2045k
main: Zeile 220: [[: main: Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden: Syntaxfehler im Ausdruck. (Fehlerverursachendes Zeichen ist \": Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden\").
main: Zeile 220: [[: main: Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden: Syntaxfehler im Ausdruck. (Fehlerverursachendes Zeichen ist \": Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden\").
OpenJDK installation completed.
Getting total system memory...
Total memory: 3845 - Available Memory: 3659
Total memory: 3845 - Available Memory: 3659
Please enter the amount of memory you want to dedicate to the server. A minimum of 700MB is recommended.
You must leave enough left over memory for the operating system to run background processes.
If all memory is exhausted the Minecraft server will either crash or force background processes into the paging file (very slow).
INFO: You are running a 64-bit architecture, which means you can use more than 2700MB of RAM for the Minecraft server.
Enter amount of memory in megabytes to dedicate to the Minecraft server (recommended: 3359): 3359
Amount of memory for Minecraft server selected: 3359 MB
Getting latest Paper Minecraft server...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 323 100 323 0 0 1736 0 --:--:-- --:--:-- --:--:-- 1736
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 33.1M 100 33.1M 0 0 1204k 0 0:00:28 0:00:28 --:--:-- 1378k
Building the Minecraft server...
bash: Zeile 343: jre/bin/java: Datei oder Verzeichnis nicht gefunden
Accepting the EULA...
Grabbing start.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 11366 100 11366 0 0 34338 0 --:--:-- --:--:-- --:--:-- 34234
Grabbing stop.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1631 100 1631 0 0 4839 0 --:--:-- --:--:-- --:--:-- 4839
Grabbing restart.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2205 100 2205 0 0 4418 0 --:--:-- --:--:-- --:--:-- 4410
Grabbing fixpermissions.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1579 100 1579 0 0 4799 0 --:--:-- --:--:-- --:--:-- 4799
Grabbing update.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 607 100 607 0 0 1914 0 --:--:-- --:--:-- --:--:-- 1914
Enter a name for your server...
Server Name: PiServer
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 311 100 311 0 0 977 0 --:--:-- --:--:-- --:--:-- 981
Minecraft can automatically start at boot if you wish.
Start Minecraft server at startup automatically (y/n)?y
Your time zone is currently set to Europe/Berlin. Current system time: Mi 6. Apr 18:58:40 CEST 2022
You can adjust/remove the selected reboot time later by typing crontab -e
Automatically reboot Pi and update server at 4am daily (y/n)?y
Daily reboot scheduled. To change time or remove automatic reboot type crontab -e
Setting server file permissions...
tail: '' kann nicht zum Lesen geöffnet werden: Datei oder Verzeichnis nicht gefunden
Setup is complete. Starting Minecraft server...
Server has failed to start after 30 seconds.
To translate the german parts for you:
"Datei oder Verzeichnis nicht gefunden" (like at the installation of the JDK or after 'Building Minecraft Server') - "File or directory not found"
"Zeile" - line
"Syntaxfehler im Ausdruck" - "Syntax error in expression"
As you can maybe see I am using something called rpimonitor, which is just a little tool I use to see the status of my server. It is headless and so I can easier see how my Pi is doing wthout SSH into it.
The errors seem kind of interesting and I can´t really explain to me where it comes from.
I hope you do and maybe it helps you to find the problem I have..
Oh wow, those are strange ones! You’ve helped me fix a couple of things right off the bat. First of all the detection of Java was failing with that syntax error. This was why the script wasn’t stopping and telling you there was a problem.
I have a theory here. It may be your browser/curl/system’s language headers. I’ve seen this before with other parts of the script (the Paper download parts are sensitive to this and have the headers). It would explain why I can’t reproduce it as my system’s default language is English/US.
I just updated SetupMinecraft.sh here to add the language headers. Can you try running SetupMinecraft.sh again? At the very least it should actually fail this time if the JDK still can’t be downloaded. Let’s see if this is as simple as missing language/encoding headers! Let me know if this happens as that is at least moving in the right direction and I’ll go back to the drawing board if it needs more.
I’m not totally positive this will get it yet. I can see that curl is correctly using the location header and you can see it is downloading the full 42MB file. That means the file should be there to extract. If nothing happens I’ll add even more error handling so we can figure out what on earth is happening here!
I also eliminated a few relative paths. I may eliminate some more and fully qualify the tar commands but they’re a pain to fully qualify but if it’s necessary then it’s necessary.
Can you also check to see if you have a ~/minecraft/jre folder? If you do what is in it, or is there nothing? It may be worth just deleting this folder before running SetupMinecraft.sh again. If this ends up being the case let me know as I should probably remove the old JRE if there’s a problem detected.
Thanks for posting this output. This looks like an international issue which are extremely difficult for me to reproduce/test for! That’s probably why I had a bunch of other successful fixes/upgrades with other people as I’m fairly sure they were also using EN/US.
I downloaded again, but the errors I got were the same. The jre file contain everything it needs to (as far as I know).
Here are some excerpts of what I´ve got:
pi@piserver:~ $ ls minecraft/jre
bin conf legal lib NOTICE release
pi@piserver:~ $ ls minecraft/jre/bin
java jfr jrunscript keytool rmiregistry
Looking at this the error “file not found” error doesn´t make any sense to me. I will test out tomorrow if my locale is the problem by changing system language. When I get any results I will tell you.
Till then, have a good one.
It certainly looks like it to me as well! That’s great you checked the folder contents. You could also cd into that directory and try running the java application with ./java while inside that bin folder. Maybe it’s actually giving us some kind of Java error!
That explains why it passed all my checks. Java is there. The files are there and it can find them. I’m not sure which file can’t be found either that it’s referring to. I am thinking you may be right. That error may be coming from Java itself or something like that.
Definitely let me know what you find. I’m still extremely puzzled by it but I appreciate you working with me as I’m certain other people will get this over time. It really reminds me a lot of the other locale issues that we had related to Paper but we beat those ones and we will beat these ones too. Until then!
AgentSmithJR
2 years ago
For a while my server was running *ok*.
It’s on an old 3B+ i think, basically the only way it would work was if i dropped the render distance down to like 1 chunk.
It stopped randomly, errored when i tried to run start.sh again.
Now I’ve been trying to reinstall the script, but it’s telling me there’s a minimum value=600 for the memory?
Can this be changed?
I think I found the problem, but I also found a workaround for the 600mb issue.
I used a text editor to change the ./start.sh file, towards the end of the file the xm600 -> lower.
The actual issue in the logs was that the render distance had to be between 2-32, when mine was 1.
Must have been a Java update which changed that recently.
But I changed the server.properties file to 2 and its back up and running.
Excellent, it sounds like you found the right workarounds! I’m surprised you are getting away with running it with <600MB. The reason I set the limit to that is that it would crash without at least that much memory (at least it would years ago when that restriction was put in place). I may have left a small safety margin but it couldn't have been much more than 50-100MB or so at the time. This was pre-OpenJDK though and maybe OpenJDK does better with this than the old Sun Java 8 VM.
It makes sense that it would take extremely dramatic measures like setting a view distance of 2 to get it to run with this little of memory. I'm very surprised it's possible with 1.18 or even 1.17+!
I agree with your diagnosis. It sounds like the minimum render distance was changed to me as well especially if you had this working on 1 for so long.
What specs is this running on? Is this a 512Mb Pi by chance or is it a 1024? These are the most aggressive performance settings I've ever seen (at least since I wrote this script originally years ago and the highest available memory Pi was 1GB) with what was previously believed to be less than the minimum required amount of resources/memory. I mean that as a compliment (after all, this script was inspired by running it on very, very underpowered devices).
The 600MB limit on a 1GB Pi would leave 400MB for the OS / other applications on a 1GB Pi which is a fine allocation and should allow for view distance 10 and all of the default settings. I feel like we may be able to get more out of it than view distance 2 but maybe for your use case the view distance doesn't matter so this is mostly just out of curiosity. If it's a 512Mb Pi that would explain it and I don't think anyone else has tried this for a while (not for years that they told me about at least). Thanks for leaving your solution!
Markus
2 years ago
After an update (supposedly an apt-update last evening) today my minecraft server wasn’t starting anymore. “systemctl status minecraft” just gave a blant “failed_error” with no further hints.
My kids want to stay on version 1.18.1, so I could not update right away.
The solution was to list all “openjdk” versions installed on the system using this command:
snap list openjdk –all
This gave a table with version 17.0.2+8 (Rev 817) and versio n 18+36 (Rev 841). So I remembered the revision of version 17 and set this revision to active:
sudo snap revert openjdk –revision 817
After this was finished I was able to start the minecraft server service just as before.
I’m leaving this here for documentary purposes.
Great work, you gave my kids a great time und made me a very happy father (and now also a hero)!
I just fixed this last night as well so it will now allow OpenJDK 18 with the latest SetupMinecraft.sh. Thanks for leaving this! Staying on 1.18.1 shouldn’t be a problem but make sure you are using the latest SetupMinecraft.sh.
It was updated literally last night but your fix works as well! I almost wonder if maybe there are still issues with OpenJDK 18 on it so this may still be a good thing to try for people who are having weird issues pop up!
Hi is it possible to run this skript on a x64 ubuntu disto
Hey Carl,
Great question, absolutely! When I developed the script I mainly did it on x86_64 even though it’s heavily marketed for Raspberry Pi on this version. It definitely works with all platforms.
Ubuntu is actually my favorite choice and what I am using for my main desktop OS. Hopefully that helps!
nice thank you
(great skript had it on my raspi and would it extend to an old but more powerfull pc )
Hey Carl,
Absolutely, no problem! I have done this as well. I’ve started servers on the Pi that grew to be really big and moved them to a x86_64 server as well in the past. You can pretty much use it as is!
James,
My server did not start last night. Manually attempting to run the java command line, I get:
Unsupported Java detected (62.0). Only up to Java 17 is supported.
My Mac informed me that it was installing a new version of Java today, so I am suspecting the same happened with my RPi.
Tom
Hey CardinalFang,
The new version doesn’t use the system JDK anymore. I have no idea if it will work on Mac though. It actually downloads it’s own JRE.
I’d try installing the new one on both of them. It doesn’t look like the Mac Java’s version number is even standard (it is picking up version 62). It’s essentially a Linux JRE though but maybe it will still work with Mac. Definitely let me know what you find!
James,
The Mac has nothing to do with this…just a coincidence that it (and every other machine I own) wanted to update Java today. The error message was from my Raspberry Pi (running the Minecraft server and your script)
Hey CardinalFang,
Absolutely. This is the same issue for sure. OpenJDK 18 is released and OpenJDK 17 is discontinued. Makes no difference which platform and OpenJDK is doing it’s normal thing of basically forcibly discontinuing the old version (it’s not a LTS version so it no longer is receiving security updates which is why everyone moves to the new version as that is unsafe).
Minecraft will not work with OpenJDK 18 or higher. The new version no longer uses the system Java version (on any system, Mac, Pi, etc.). Basically it downloads it’s own version of OpenJDK 17 that is used only for Minecraft so the system version no longer makes any difference and is basically not used at all. It just needs an update with SetupMinecraft.sh and that should get it going!
I reran
curl https://raw.githubusercontent.com/TheRemote/RaspberryPiMinecraft/master/SetupMinecraft.sh | bashand then did start.sh and it is up and running again.It seems Setup loads the custom OpenJDK. I wonder how the JDK was altered? Does start.sh do that as well?
Hey Cardinal,
You’re exactly right! Basically this is all there is to it:
curl -H "Accept-Encoding: identity" -H "Accept-Language: en" -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4.212 Safari/537.36" https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_arm_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -Ltar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
This downloads the “Adoptium” Temurin OpenJDK which is a freely available binary OpenJDK distribution and unzips/untars it. It puts this in a folder called “jre” in your minecraft folder.
Now the sneaky trick I’m using to not change the system JDK is calling this directly like this upon launch in start.sh:
screen -dmS minecraft dirname/minecraft/jre/bin/java -jar -Xms400M -XmxmemselectM dirname/minecraft/paperclip.jarBasically you can see here I’m directly calling the “java” binary we downloaded and placed in the Minecraft folder. This is a fully qualified path basically right to Java so that we don’t have to rely on the system version anymore. The old method just called “java” which uses the built in system Java.
I was forced to do this and the script has got a lot of new users because it’s not fun to do it manually (especially if you aren’t very comfortable with the CLI). This was the cleanest solution and although it seemed daunting at first to try to control OpenJDK in the end I like the result better than how it was before. That OpenJDK issue has been a thorn in my side for years. Now we are in *complete* control of the OpenJDK version and we don’t have to mess with the system’s at all!
I’m glad you got it going, take care!
Yesterday (or whenever the server stopped), my start.sh didn’t have the fully qualified path to the custom Java binary. But now it does. I suspect that was fixed when I re-ran SetupMinecraft.sh.
Hey Cardinal,
Absolutely! The scripts won’t update themselves (by design). They’ll only update Minecraft if that makes sense. It was absolutely running SetupMinecraft.sh again that downloads the latest one from GitHub and will put any new changes through.
The reason it doesn’t do this is if it did I would basically have a botnet of Minecraft servers that connect to my GitHub account and would run whatever I tell them to. I could absolutely do this easily if we had a need (if circumstances changed where updates were being pushed a lot more frequently) but I definitely like maintaining that boundary where you don’t have to worry about my GitHub account getting hacked and thousands of servers running malicious code from it (as a theoretical scenario).
The way it works now is the scripts can’t and won’t change unless you specifically tell them to by running SetupMinecraft.sh (which isn’t automated). It’s a fully offline system other than connecting to the Paper servers to download security updates/fixes. Theoretically Paper’s servers could get hacked but they’re aware of this as is Microsoft and have a lot more resources to make sure that their setup stays safe and has the necessary safeguards in place (costs money and time).
If this happened with my current setup the worst they could do is get a handful of people installing fresh (before I could contact GitHub and freeze the account) but if I automated this they could get thousands of machines extremely quickly. If I ever had to move to automatic updates I was responsible for I would spend the money and time to secure the servers to an extreme degree to make sure that wouldn’t happen but we haven’t had a need to do that yet.
Generally there aren’t very many changes but any time this happens with OpenJDK I’ve had to do a bunch of them. Hopefully with this new method things will be more stable as I shouldn’t need to change it until the Minecraft server requirements change (theoretically)!
(In my best GeorgeNotFound voice: “Jaaaaaaaaaaaaaaaaaaaaaaaaaaaaaames…”)
Back again, the children are bored of SMP and Bedrock’s world downloads / command mods are not cutting the mustard! (The Bedrock SMP on oracle runs flawless since the ip change / firewall thing, but I sometimes think that 1gb RAM is a problem too.)
The ssh / server startup works great, looks fine on the server itself, but sure enough, “Unable to connect to world”… so here’s the back-story and a few refreshers, in case you can help, (or in case me spelling it out points me at some more comment threads below all over again!)
I’m catering to a bunch of 6 year olds with ipads and a couple laptops, so, clients are going to be bedrock.
I got really brave, and used this guide to set myself up 1 (of 2 to come?) Ampere/ARM 2 core / 12GB RAM oracle cloud servers using this guide (for the oracle config, not the java/minecraft setup.) I also chose Ubuntu 20.04 instead of their suggestion, because I remembered from your last guide. Unfortunately it only allows 64 bit, (but, since your guide says 32bit is mostly due to 1gb RAM performance, I selectively decided to trudge forward.
I used the Oracle Developer Blog guide.
I created my own users like you recommended from the bedrock server guide, (maybe something changed, but this time around it was behaving odd and automatically asked for password after the first command, and the next 2 lines failed with ‘already created’ and started asking for passwords instead of SSH, but I sorted all that out and it’s working fine anyway.
sudo adduser minecraftsudo mkdir /home/minecraft
sudo usermod -d /home/minecraft minecraft
I tried using that account without being in sudoers, but it seems like this script depends on the extra permissions? correct me if I’m wrong, I can go back and try again and get the errors, but promoting the account seems to have created a perfect install anyway.
So, once promoted, I ran the install script flawlessly, everything looked perfect server runs great. (Coming back to this step later, I realized it doesn’t connect here either though.)
Used this (pi/java) guide for plugins to fire up some Bedrock connectivity, installing GeyserMC, and Floodgate for MS/xbox auth. those command lines (pasted in full below) also worked flawlessly
Navigated to minecraft/plugins and and ran these 2 lines,then fired up the server again.
curl -H "Accept-Encoding: identity" -H "Accept-Language: en" -L -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.12.212 Safari/537.36" -o floodgate-Spigot.jar https://ci.opencollab.dev/job/GeyserMC/job/Floodgate/job/master/lastSuccessfulBuild/artifact/spigot/target/floodgate-spigot.jarcurl -H "Accept-Encoding: identity" -H "Accept-Language: en" -L -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.12.212 Safari/537.36" -o Geyser-Spigot.jar https://ci.opencollab.dev/job/GeyserMC/job/Geyser/job/master/lastSuccessfulBuild/artifact/bootstrap/spigot/target/Geyser-Spigot.jar
Amidst the firewall changes below, I also updated the same ports in server.properties and Geyser-Spigot/config.yml
(I tried setting an IP in both of those too, but they seemed to suggest blank/auto worked better in the comments, and taking them out
burned a few hours trying iptables commands but I noticed they didn’t seem to do anything, so I switched to UFW
Added the same Ingress rules to Oracle (UDP+TCP), and again in UFW allow in for each of the entries below (spread across a horrible amount of attempts to add reboot open/connect/fail/close minecraft.)
25565/tcp ALLOW IN Anywhere (java default?)25565/udp ALLOW IN Anywhere
22333/tcp ALLOW IN Anywhere
22333/udp ALLOW IN Anywhere
19132/tcp ALLOW IN Anywhere Geyser seems to default to taking over 19132 by default, but I managed to change that (to no advantage.)
19132/udp ALLOW IN Anywhere
19133/tcp ALLOW IN Anywhere
19133/udp ALLOW IN Anywhere
19888/tcp ALLOW IN Anywhere
19888/udp ALLOW IN Anywhere (19888 is actually the port I chose to make the actual oracle/bedrock server finally work last time, but no joy)
(Geyser is some kind of magical bedrock > Java client command translating proxy, and floodgate apparently handles the MS/xbox live account client authorization for java servers)
just for reference, I’m going to paste the console output for the paper/geyser/floodgate startup just because it pointed me at a few port settings even though it didn’t work.
the 0.0.0.0 near the end is just default, and changing it tanks server startup with pages of weird java packag/zip errors that I won’t get into. (The comments in the file say ‘leave it’ anyway.)
Starting org.bukkit.craftbukkit.MainSystem Info: Java 17 (OpenJDK 64-Bit Server VM 17.0.2+8) Host: Linux 5.13.0-1025-oracle (aarch64)
Loading libraries, please wait...
[01:59:36 INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[01:59:38 INFO]: Loaded 7 recipes
[01:59:40 INFO]: Starting minecraft server version 1.18.2
[01:59:40 INFO]: Loading properties
[01:59:40 INFO]: This server is running Paper version git-Paper-284 (MC: 1.18.2) (Implementing API version 1.18.2-R0.1-SNAPSHOT) (Git: e42d683)
[01:59:40 INFO]: Server Ping Player Sample Count: 12
[01:59:40 INFO]: Using 4 threads for Netty based IO
[01:59:40 INFO]: Default game type: SURVIVAL
[01:59:40 INFO]: Generating keypair
[01:59:40 INFO]: Starting Minecraft server on *:25565
[01:59:40 INFO]: Using epoll channel type
[01:59:40 INFO]: Paper: Using libdeflate (Linux aarch64) compression from Velocity.
[01:59:40 INFO]: Paper: Using OpenSSL (Linux aarch64) cipher from Velocity.
[01:59:40 INFO]: [floodgate] Loading floodgate v2.1.0-SNAPSHOT
***** This warn is a known (and non-) issue ******** [01:59:41 WARN]: [floodgate] en_ is not a supported Floodgate language.
[01:59:41 INFO]: [floodgate] Took 543ms to boot Floodgate
[01:59:41 INFO]: [Geyser-Spigot] Loading Geyser-Spigot v2.0.2-SNAPSHOT
[01:59:41 INFO]: Server permissions file permissions.yml is empty, ignoring it
[01:59:41 INFO]: Preparing level "world"
[01:59:47 INFO]: [floodgate] Enabling floodgate v2.1.0-SNAPSHOT
[01:59:48 INFO]: [Geyser-Spigot] Enabling Geyser-Spigot v2.0.2-SNAPSHOT
[01:59:48 INFO]: [Geyser-Spigot] Auto-loaded Floodgate key
[01:59:48 INFO]: [Geyser-Spigot] ******************************************
[01:59:48 INFO]: [Geyser-Spigot]
[01:59:48 INFO]: [Geyser-Spigot] Loading Geyser version 2.0.2-SNAPSHOT (git-master-0803c5d)
[01:59:48 INFO]: [Geyser-Spigot]
[01:59:48 INFO]: [Geyser-Spigot] ******************************************
[01:59:51 INFO]: [Geyser-Spigot] Loaded Floodgate key!
[01:59:51 INFO]: [Geyser-Spigot] Started Geyser on 0.0.0.0:19888
[01:59:51 INFO]: [Geyser-Spigot] Done (3.007s)! Run /geyser help for help!
[01:59:51 INFO]: Running delayed init tasks
[01:59:51 INFO]: Done (11.871s)! For help, type "help"
[01:59:51 INFO]: Timings Reset
Running out of night owl-hours, so I thought summing it up for myself for a restart point was a great chance to get a second opinion anyway, would love it if you spotted anything I clearly just missed.
I think tomorrow I’ll see if I can replicate the firewall swap last time and maybe uninstall UFW to install firewalld (though I swear I did the opposite last time). So far getting of 19132 to 19888 wasn’t the perfect fix I hoped, (but since there are more ports in play now, I wonder if I didn’t put the right variants in the right places.
Thanks for your amazing guides anyway, Starting to feel amateur-hour ‘comfortable’ with committing Ubuntu command line stuff to memory as a side benefit!!!
Hey Gruntzilla,
What a project! I follow 100% actually here. It honestly looks like you’ve done it to me. The server is starting and everything looks okay in the logs.
Changing the ports was going to be my first suggestion. Use zero of the default ports. Change 19133 as well (that’s the IPv6 port). It seems to be a bug with the default ports. It has fixed almost every cloud instance we have seen.
It’s only the Oracle VMs that do this and we have several documented cases of it for sure. I’m sure you probably have found some of these as you seem to be aware of the issue for sure.
Given that you are having exactly identical symptoms (although for sure with more ports in play than a standard setup) and it’s an Oracle VM we have to be dealing with their network security again. My best guess is they have certain ports “blacklisted” but they don’t tell us because other cloud providers don’t do this. The Bedrock server has known port bugs but the Oracle one is something more I think.
Your startup looks completely clean to me though in those log files and the server looks like it is running. This looks like the dreaded Oracle ports/networking configuration which either doesn’t work as well as Amazon and other competitors or has some kind of blacklist that isn’t public.
I don’t have any reason to believe you need to change the ports outside of 19132 and 19133. It’s possible but I have a feeling that whether we are dealing with a bug or some kind of blacklist that either way the more unusual ports are not likely to be on it. I know there’s tons of Minecraft tutorials out there for the free VM so it would not shock me if they did blacklist those ports or something like that but there’s no way they got the translation layer ports and all of those. As an absolute last resort you could try alternate ports on there as well.
For what it’s worth I think you are really close and that this will probably work if we can get around the networking issues!
@James – Have you looked at Purpur ( purpurmc.org ) – instead of paper? drop-in replacement form of paper?
Hey James,
Not yet but I’m open to using a different one potentially or forking it. I think Aikar has a truly multithreaded version of Paper. I’ve honestly never had any reason to switch it but the OpenJDK issues are pretty annoying lately.
Is there any reason to use this one over Paper or do you have any experience with it? I’m always open to newer things!
Nothing in particular, it appears to be a pretty popular replacement for paper so the performance will be similar to that of paper, and may be better. Given the limited resources of an rPI that seemed like a good idea.
I may end up switching off of rPI onto another machine to run Forge though. My kids keep asking for specific Forge mods they’ve seen online, and there are quite a few that are only Forge and dont work as a bukkit/spigot/paper plugin.
Hey James,
Thanks for the info, I’ll definitely keep that in mind and if you do try one of those let me know what your experience was for sure!
I’ve definitely moved some of my Pi servers onto x86_64 servers before. It shouldn’t be too bad if you do end up having to migrate to a different solution. There’s nothing in the script at least that will cause you any trouble trying to switch as all that is in the folder is basically the start.sh scripts etc.
It may not hurt to keep the Pi server around as a backup / in case they see a mod the next week that needs Paper / Spigot as well but I totally understand however it goes and if you have any trouble / questions would definitely help if you need me!
Hi,
about one week ago my server suddenly stopped working after running fine for about 5 months (last updated the minecraft-version when 1.18 was released). I first thought it was about the new jdk which was released few time ago, but after updating it my server still doesn´t start. I already reinstalled but still nothing changed. When i try using the start.sh i get an error which is like “tail: ” cannot be opened for reading: file not found” (which is translated from german, i don´t know how the original translation would look like…). I ran out of ideas how to fix my issue and i hope you can help me.
Thanks.
Hey Kevin,
I think I can explain what the messages are saying here. The “tail” command is a command that prints the last X number of lines from a file. What it is trying to do is read your servers logs file from the “logs” folder.
My guess is that this file doesn’t exist because the server isn’t starting. There have been some changes. The server now downloads it’s own JDK to avoid issues with the system in general.
I only released this a few days ago. What I would try is try installing the latest version again here with the updated JDK. Most likely you have a JDK installed either below 16 or above 17 (it can’t be 18 or higher anymore). The new version works slightly differently. Can you give that a try and let’s see if we can get things going for you here!
Hi James,
you were right. It was about the JDK version. I had JDK 18 installed, so i manually installed JDK 17. The server was still not starting so looked into the start.sh file and guessed that it was about your JDK installation. I edited the “/home/…/java” to “java” in the last line so the script uses my installation now. After doing this the server immediately started and is running fine.
Thanks for your help.
Hey Kevin,
No problem! The new OpenJDK is just a zip file. I’d be curious what is going wrong with your installation. I just tried it on my x86_64 PC to double test everything out and it installed the first try normally.
Basically newer versions no longer use the system Java. You’ve overridden it to work the old way. It would be interesting to try running the startup line manually to see what error it’s giving. I can’t reproduce this on any platform.
You’ve basically removed the “fix” that fixed it for everyone else basically because the system Java can’t be updated through snap / apt to the correct version on most distros. You are the only one that has had any problems though. They also shouldn’t be happening as the OpenJDK file is just a zip file that has a “java” binary inside it that is the right version without having to reconfigure the entire system with a custom installed JRE/JDK like this.
These manual installs don’t update themselves so it’s usually a security issue to install one without apt/snap installing security patches for it. It won’t be a problem any time soon but if you leave that as the system JDK and a year or two go by then yes at that point you may start having security breaches depending on what has been found / patched since you originally did that manual install. Anything else on the system that uses Java will now also use that OpenJDK if this was done using update-alternatives which can sometimes break other applications and exposes all of them to an unpatched JRE as well.
It was always a lot more janky to try to get a bunch of flavors to get the exact right version over apt/snapd (it’s actually impossible it turns out, now more than ever with Paper Minecraft not supporting either OpenJDK 18+ or OpenJDK 15 or lower). I didn’t want to ask people to have to manually install OpenJDK and use update-alternatives to select the right OpenJDK (extremely difficult to automate, many systems will have multiple JREs/JDKs) as the whole point of the script was to not have to deal with any of that. It’s a security risk as I outlined earlier and some applications installed via apt expect the java version to be the one available in the repositories so it can also break things.
The new method is remarkably simple (but difficult to configure without exact paths) and much less prone to problems than apt/snapd was which broke it for literally everyone. This was a constant source of problems for everyone especially if they weren’t using Ubuntu or Raspberry Pi OS. The updated version should run on anything (at least armhf, arm64 and x86_64).
Does this happen to be on a Pi Zero or something? I think there is a Pi model that may need the non armhf binary but if it’s the Zero that one also only has 512 MB of memory which is definitely a problem for modern Minecraft versions. If you are using an unusual platform though if you let me know what that is I can probably add it in there.
As long as it’s working though I’d just leave it. It definitely seems to me like something else is still going on though so we will have to see if it’s really working or maybe needs one more update / fix. Having OpenJDK 17 is the important part!
Hi,
I´m pretty aware of the security issues and I´m also still not very happy with my solution. I´m running Raspbian (Linux version 5.10.103-v8+ (aarch64-linux-gnu-gcc-8 (Ubuntu/Linar o 8.4.0-3ubuntu1) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34)) on a RPI 4B with 4GB RAM.
The thing with other applications using this installation of JDK is not a problem because this RasPi is only being used for the Minecraft Server and has a Samba Client running in background.
As you´ve said I will just leave it as it is, because the server is currently running fine without any problems, but if I´ll run into any problems I guess I´ll come back to you.
Hey Kevin,
Agree 100% I’m glad you are aware of the issues as that makes it pretty unlikely that you will forget that it’s set up this way for years at a time.
Basically the easiest way to troubleshoot it would be to look at what output you’re getting in SetupMinecraft.sh (it checks the currently installed JDK and should be failing SetupMinecraft.sh if something is going wrong).
If nothing is going wrong there you would just put the last line of start.sh directly on the command line and run it and see what error it’s giving.
The reason I would wait for now is there are going to be consequences for the current OpenJDK situation and I expect it will all change over the next 6-12 months and that we will have better options available to us before that point. As long as you don’t forget it’s set up like this for years I’m certain you won’t have any problems. Enough time needs to pass for holes/exploits to be found in that current version basically.
We’ll cross our fingers that yours is good to go for now for sure! If anyone else is having this issue (still haven’t heard from anyone else for this issue) the steps above can pretty easily troubleshoot it as by running it directly there’s nowhere the errors can hide!
Just another thin I thought about: is it maybe possible I have to unzip the jre? And I just tried to start the server manually with a .sh file I created and it says for the java file “file not found”. As a path I put “/home/…/minecraft/jre/bin/java”. I don´t get an error for the paperclip.jar (could be because the error with the java occurs first). Maybe you have another idea.
Hey Kevin,
Oh wow, you’re just in time, I was just looking at your last message! So I take it you don’t really have the dots in your path as that is a relative path. If those dots are real instead of a username that would definitely break it.
start.sh does not set up the OpenJDK. It’s all done by SetupMinecraft.sh basically. These all have new code so if there’s any custom changes to the scripts you’d want to run SetupMinecraft.sh and make your changes again basically.
Are you specifying an install directory when you run SetupMinecraft.sh? What does the output look like when it’s installing Java? Honestly SetupMinecraft.sh should fail 100% if you are using the latest version of it. If it runs the new JRE and it doesn’t return version 16 or 17 the installer should exit completely.
Can you run SetupMinecraft.sh with:
curl https://raw.githubusercontent.com/TheRemote/RaspberryPiMinecraft/master/SetupMinecraft.sh | bashIf you are doing anything other than just running SetupMinecraft.sh and letting it update the scripts with the latest version that almost certainly would explain it. You shouldn’t even be getting this far with SetupMinecraft.sh as it checks that the JDK was set up successfully. Is this how you’re trying to update it?
The reason I am so confused is to answer your question of can you just unzip the JDK yourself the answer is yes, absolutely. Look at how simple the Java install is (I believe you will understand what you’re seeing after our conversation):
Install_Java() {# Install Java
Print_Style "Installing OpenJDK..." "$YELLOW"
CPUArch=$(uname -m)
if [[ "$CPUArch" == *"armv7"* || "$CPUArch" == *"armhf"* ]]; then
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_arm_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
elif [[ "$CPUArch" == *"aarch64"* || "$CPUArch" == *"arm64"* ]]; then
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_aarch64_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
elif [[ "$CPUArch" == *"x86_64"* ]]; then
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_x64_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -L
tar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
fi
CurrentJava=$($DirName/minecraft/jre/bin/java -version 2>&1 | head -1 | cut -d '"' -f 2 | cut -d '.' -f 1)
if [[ $CurrentJava -lt 16 || $CurrentJava -gt 17 ]]; then
Print_Style "Required OpenJDK version 16 or 17 could not be installed." "$YELLOW"
exit 1
else
Print_Style "OpenJDK installation completed." "$GREEN"
fi
}
That’s it. That’s all it does. It literally does just download a .tar.gz file and run tar -xf. Theoretically all you would need to do is go to your Minecraft folder (if this is a 64 bit OS install otherwise use the armhf version) and do:
curl https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.2%2B8/OpenJDK17U-jre_aarch64_linux_hotspot_17.0.2_8.tar.gz -o jre17.tar.gz -Ltar -xf jre17.tar.gz
rm -f jre17.tar.gz
mv jdk-* jre
But that’s the pickle isn’t it? What is going wrong? Why can’t it download and extract a file, and why is SetupMinecraft.sh completing successfully without realizing it? There really isn’t a lot happening here and if it was broken I would have had dozens of people complaining about it as it has been this way for about a week now. It’s an order of magnitude more simple than it used to work and literally is just extracting a tar file with the JDK in it.
Hopefully that clarifies! I didn’t mean to underestimate your IT familiarity/knowledge in my last replies. It was more that I *don’t* expect people to have those skills necessarily that are using the script which is often the case (and that’s fine, it’s meant to be used by non-experts). I gave more of the juicy details though this time since you are more comfortable with the technicals!
None of this also doesn’t mean there isn’t some kind of mistake or problem with setting up the new JDK. Maybe something weird is happening still. It’s only a week old so I’m not ruling out any problems/mistakes on my part! So far though everyone’s JDK that was killed has had it fixed by running SetupMinecraft.sh which works this way. Yours is the odd one out so far. This could be for many reasons that could be my fault, your fault, or nobodies fault at all. We’ve seen every single one of those possibilities many times over the years. Thanks for your patience working through the issues!
Hey,
so I just reinstalled the server. I ran SetupMinecraft.sh and after giving it a closer look while installing i noticed a few errors. The whole log with me installing it:
pi@piserver:~ $ curl https://raw.githubusercontent.com/TheRemote/RaspberryPiMinecraft/master/SetupMinecraft.sh | bash% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 16173 100 16173 0 0 48133 0 --:--:-- --:--:-- --:--:-- 47991
Minecraft Server installation script by James A. Chambers - https://jamesachambers.com/
Version 1.18.2 will be installed. To change this, open SetupMinecraft.sh and change the "Version" variable to the version you want to install.
Latest version is always available at https://github.com/TheRemote/RaspberryPiMinecraft
Don't forget to set up port forwarding on your router! The default port is 25565
Installing screen, sudo, net-tools, curl...
OK:1 http://archive.raspberrypi.org/debian buster InRelease
OK:2 http://raspbian.raspberrypi.org/raspbian buster InRelease
Holen:3 http://giteduberger.fr rpimonitor/ InRelease [1.933 B]
Es wurden 1.933 B in 1 s geholt (2.208 B/s).
Update rpimonitor Packages Status
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
curl ist schon die neueste Version (7.64.0-4+deb10u2).
screen ist schon die neueste Version (4.6.2-3+deb10u1).
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
net-tools ist schon die neueste Version (1.60+git20180626.aebd88e-1).
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
Enter root directory path to install Minecraft server. Almost nobody should change this unless you're installing to a different disk altogether. (default ~):
Directory Path:
Directory Path : /home/pi -- accept (y/n)?y
Directory Path: /home/pi
Creating minecraft server directory...
Installing OpenJDK...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 691 100 691 0 0 1808 0 --:--:-- --:--:-- --:--:-- 1813
100 42.5M 100 42.5M 0 0 1673k 0 0:00:26 0:00:26 --:--:-- 2045k
main: Zeile 220: [[: main: Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden: Syntaxfehler im Ausdruck. (Fehlerverursachendes Zeichen ist \": Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden\").
main: Zeile 220: [[: main: Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden: Syntaxfehler im Ausdruck. (Fehlerverursachendes Zeichen ist \": Zeile 219: /home/pi/minecraft/jre/bin/java: Datei oder Verzeichnis nicht gefunden\").
OpenJDK installation completed.
Getting total system memory...
Total memory: 3845 - Available Memory: 3659
Total memory: 3845 - Available Memory: 3659
Please enter the amount of memory you want to dedicate to the server. A minimum of 700MB is recommended.
You must leave enough left over memory for the operating system to run background processes.
If all memory is exhausted the Minecraft server will either crash or force background processes into the paging file (very slow).
INFO: You are running a 64-bit architecture, which means you can use more than 2700MB of RAM for the Minecraft server.
Enter amount of memory in megabytes to dedicate to the Minecraft server (recommended: 3359): 3359
Amount of memory for Minecraft server selected: 3359 MB
Getting latest Paper Minecraft server...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 323 100 323 0 0 1736 0 --:--:-- --:--:-- --:--:-- 1736
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 33.1M 100 33.1M 0 0 1204k 0 0:00:28 0:00:28 --:--:-- 1378k
Building the Minecraft server...
bash: Zeile 343: jre/bin/java: Datei oder Verzeichnis nicht gefunden
Accepting the EULA...
Grabbing start.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 11366 100 11366 0 0 34338 0 --:--:-- --:--:-- --:--:-- 34234
Grabbing stop.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1631 100 1631 0 0 4839 0 --:--:-- --:--:-- --:--:-- 4839
Grabbing restart.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2205 100 2205 0 0 4418 0 --:--:-- --:--:-- --:--:-- 4410
Grabbing fixpermissions.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1579 100 1579 0 0 4799 0 --:--:-- --:--:-- --:--:-- 4799
Grabbing update.sh from repository...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 607 100 607 0 0 1914 0 --:--:-- --:--:-- --:--:-- 1914
Enter a name for your server...
Server Name: PiServer
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 311 100 311 0 0 977 0 --:--:-- --:--:-- --:--:-- 981
Minecraft can automatically start at boot if you wish.
Start Minecraft server at startup automatically (y/n)?y
Your time zone is currently set to Europe/Berlin. Current system time: Mi 6. Apr 18:58:40 CEST 2022
You can adjust/remove the selected reboot time later by typing crontab -e
Automatically reboot Pi and update server at 4am daily (y/n)?y
Daily reboot scheduled. To change time or remove automatic reboot type crontab -e
Setting server file permissions...
tail: '' kann nicht zum Lesen geöffnet werden: Datei oder Verzeichnis nicht gefunden
Setup is complete. Starting Minecraft server...
Server has failed to start after 30 seconds.
To translate the german parts for you:
"Datei oder Verzeichnis nicht gefunden" (like at the installation of the JDK or after 'Building Minecraft Server') - "File or directory not found"
"Zeile" - line
"Syntaxfehler im Ausdruck" - "Syntax error in expression"
As you can maybe see I am using something called rpimonitor, which is just a little tool I use to see the status of my server. It is headless and so I can easier see how my Pi is doing wthout SSH into it.
The errors seem kind of interesting and I can´t really explain to me where it comes from.
I hope you do and maybe it helps you to find the problem I have..
Hey Kevin,
Oh wow, those are strange ones! You’ve helped me fix a couple of things right off the bat. First of all the detection of Java was failing with that syntax error. This was why the script wasn’t stopping and telling you there was a problem.
I have a theory here. It may be your browser/curl/system’s language headers. I’ve seen this before with other parts of the script (the Paper download parts are sensitive to this and have the headers). It would explain why I can’t reproduce it as my system’s default language is English/US.
I just updated SetupMinecraft.sh here to add the language headers. Can you try running SetupMinecraft.sh again? At the very least it should actually fail this time if the JDK still can’t be downloaded. Let’s see if this is as simple as missing language/encoding headers! Let me know if this happens as that is at least moving in the right direction and I’ll go back to the drawing board if it needs more.
I’m not totally positive this will get it yet. I can see that curl is correctly using the location header and you can see it is downloading the full 42MB file. That means the file should be there to extract. If nothing happens I’ll add even more error handling so we can figure out what on earth is happening here!
I also eliminated a few relative paths. I may eliminate some more and fully qualify the tar commands but they’re a pain to fully qualify but if it’s necessary then it’s necessary.
Can you also check to see if you have a ~/minecraft/jre folder? If you do what is in it, or is there nothing? It may be worth just deleting this folder before running SetupMinecraft.sh again. If this ends up being the case let me know as I should probably remove the old JRE if there’s a problem detected.
Thanks for posting this output. This looks like an international issue which are extremely difficult for me to reproduce/test for! That’s probably why I had a bunch of other successful fixes/upgrades with other people as I’m fairly sure they were also using EN/US.
I downloaded again, but the errors I got were the same. The jre file contain everything it needs to (as far as I know).
Here are some excerpts of what I´ve got:
pi@piserver:~ $ ls minecraft/jrebin conf legal lib NOTICE release
pi@piserver:~ $ ls minecraft/jre/bin
java jfr jrunscript keytool rmiregistry
Looking at this the error “file not found” error doesn´t make any sense to me. I will test out tomorrow if my locale is the problem by changing system language. When I get any results I will tell you.
Till then, have a good one.
Hey Kevin,
It certainly looks like it to me as well! That’s great you checked the folder contents. You could also cd into that directory and try running the java application with ./java while inside that bin folder. Maybe it’s actually giving us some kind of Java error!
That explains why it passed all my checks. Java is there. The files are there and it can find them. I’m not sure which file can’t be found either that it’s referring to. I am thinking you may be right. That error may be coming from Java itself or something like that.
Definitely let me know what you find. I’m still extremely puzzled by it but I appreciate you working with me as I’m certain other people will get this over time. It really reminds me a lot of the other locale issues that we had related to Paper but we beat those ones and we will beat these ones too. Until then!
For a while my server was running *ok*.
It’s on an old 3B+ i think, basically the only way it would work was if i dropped the render distance down to like 1 chunk.
It stopped randomly, errored when i tried to run start.sh again.
Now I’ve been trying to reinstall the script, but it’s telling me there’s a minimum value=600 for the memory?
Can this be changed?
I think I found the problem, but I also found a workaround for the 600mb issue.
I used a text editor to change the ./start.sh file, towards the end of the file the xm600 -> lower.
The actual issue in the logs was that the render distance had to be between 2-32, when mine was 1.
Must have been a Java update which changed that recently.
But I changed the server.properties file to 2 and its back up and running.
Hey AgentSmithJR,
Excellent, it sounds like you found the right workarounds! I’m surprised you are getting away with running it with <600MB. The reason I set the limit to that is that it would crash without at least that much memory (at least it would years ago when that restriction was put in place). I may have left a small safety margin but it couldn't have been much more than 50-100MB or so at the time. This was pre-OpenJDK though and maybe OpenJDK does better with this than the old Sun Java 8 VM.
It makes sense that it would take extremely dramatic measures like setting a view distance of 2 to get it to run with this little of memory. I'm very surprised it's possible with 1.18 or even 1.17+!
I agree with your diagnosis. It sounds like the minimum render distance was changed to me as well especially if you had this working on 1 for so long.
What specs is this running on? Is this a 512Mb Pi by chance or is it a 1024? These are the most aggressive performance settings I've ever seen (at least since I wrote this script originally years ago and the highest available memory Pi was 1GB) with what was previously believed to be less than the minimum required amount of resources/memory. I mean that as a compliment (after all, this script was inspired by running it on very, very underpowered devices).
The 600MB limit on a 1GB Pi would leave 400MB for the OS / other applications on a 1GB Pi which is a fine allocation and should allow for view distance 10 and all of the default settings. I feel like we may be able to get more out of it than view distance 2 but maybe for your use case the view distance doesn't matter so this is mostly just out of curiosity. If it's a 512Mb Pi that would explain it and I don't think anyone else has tried this for a while (not for years that they told me about at least). Thanks for leaving your solution!
After an update (supposedly an apt-update last evening) today my minecraft server wasn’t starting anymore. “systemctl status minecraft” just gave a blant “failed_error” with no further hints.
My kids want to stay on version 1.18.1, so I could not update right away.
The solution was to list all “openjdk” versions installed on the system using this command:
snap list openjdk –all
This gave a table with version 17.0.2+8 (Rev 817) and versio n 18+36 (Rev 841). So I remembered the revision of version 17 and set this revision to active:
sudo snap revert openjdk –revision 817
After this was finished I was able to start the minecraft server service just as before.
I’m leaving this here for documentary purposes.
Great work, you gave my kids a great time und made me a very happy father (and now also a hero)!
Hey Markus,
I just fixed this last night as well so it will now allow OpenJDK 18 with the latest SetupMinecraft.sh. Thanks for leaving this! Staying on 1.18.1 shouldn’t be a problem but make sure you are using the latest SetupMinecraft.sh.
It was updated literally last night but your fix works as well! I almost wonder if maybe there are still issues with OpenJDK 18 on it so this may still be a good thing to try for people who are having weird issues pop up!