- 1 Setting up a dedicated server
- 2 Hosting Providers
- 3 Advanced Server Administration
- 4 Troubleshooting
Setting up a dedicated server
There are no Windows binaries, this guide is exclusively for Ubuntu Linux.
This guide assumes you know the basics of using a bash terminal: ssh'ing into a server, running bash commands, editing text files, etc.
If you have no experience using bash, maybe start [here]
2GB RAM 2.8Ghz CPU for a 10 player server 4.2Ghz i7 CPU for a 50 player server
Install dependencies and create the `steam` user. (You only need to do this once):
sudo apt update && sudo apt install -y gdb curl lib32gcc1 && sudo useradd -m steam
Login as the steam user. (You will need to do this each time you connect to your server):
sudo su -l steam -s /bin/bash
mkdir ~/Steam && cd ~/Steam && curl -sqL "https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz" | tar zxvf -
Install the Pavlov Server (You will need to to do this each time there is a Pavlov Server update):
cd ~/Steam && ./steamcmd.sh +login anonymous +force_install_dir /home/steam/pavlovserver +app_update 622970 +exit
Make the PavlovServer script executable. (You only need to do this once):
chmod +x ~/pavlovserver/PavlovServer.sh
Before starting the server we need to configure it, create a file at /home/steam/pavlovserver/Pavlov/Saved/Config/LinuxServer/Game.ini and open it with your preferred text editor, Vim in this case.
mkdir -p /home/steam/pavlovserver/Pavlov/Saved/Config/LinuxServer vim /home/steam/pavlovserver/Pavlov/Saved/Config/LinuxServer/Game.ini
Below is an example of a server config file.
[/Script/Pavlov.DedicatedServer] bEnabled=true ServerName="My dedicated server" MaxPlayers=50 bSecured=true MapRotation=(MapId="UGC1668673188") MapRotation=(MapId="datacenter", GameMode="SND") MapRotation=(MapId="sand", GameMode="DM") MapRotation=(MapId="bridge", GameMode="TDM")
- bEnabled - whether the server appears in the server list (unconfirmed)
- ServerName - name it will be listed as. (approx 35 chars max)
- MaxPlayers - See suggested specs for limits
- bSecured - enabled Valve Anti-Cheat (VAC)
- MapRotation - you can add multiple of these. The MapId must be “UGC” followed by the map ID. you can find the map id in the URL of the steam workshop page.
Available game modes as of 10th of May 2019: SND, TDM, DM, GUN.
Maps running a Custom Game Mode (TTT, BR, Duel, etc.) don't care which GameMode you chose.
(optional) If you add moderators to your server, they will have an "admin panel" in their menu which will allow them to:
- kill player
- teleport to player
- kick player
- ban player
- rotate to next map
Example Mod List:
90000000000000111 # Some Player 90000000000000112 # Some Other Player
Steam ID finder: https://steamidfinder.com/lookup/
Inbound IP Range: 0.0.0.0/0
- 7 - UDP - ICMP - used for pinging
- 7000 - UDP
- 7200 - UDP
- 7777 - UDP
An easy method of creating firewall rules in Linux is by using a third-party firewall tool. We will be using "ufw".
First, install ufw with the following command.
sudo apt install ufw -y
After installation, the most important step of all is to allow SSH (remote connections). This can be enabled with
sudo ufw allow ssh
If you do not enable SSH connections, you will not be able to remotely connect to your machine, essentially bricking it.
Next, we need to allow connections from all of Pavlov's UDP ports. This can be done with
sudo ufw allow 7/udp && sudo ufw allow 7000/udp && sudo ufw allow 7200/udp && sudo ufw allow 7777/udp
The only remaining step is to enable UFW's firewall with
sudo ufw enable
Starting the server
cd ~/pavlovserver && ./PavlovServer.sh
That's it, your server will be automatically broadcast to the master server! :)
Note that when you close your terminal, the server will go down. See the "supervisors" section below for how to prevent this.
Considering the suggested server specs, you may be interested in the following hosting providers:
Provider | Base CPU | Details OVH | 4.5 GHz | https://www.ovh.com.au/dedicated-servers/game/ Amazon Web Services | 4.0 Ghz | https://aws.amazon.com/ec2/instance-types/z1d/ packet.com | 3.5 GHz | https://www.packet.com/cloud/servers/c1-small/ Google Cloud Platform | 2.6 GHz | https://cloud.google.com/compute/docs/cpu-platforms
Amazon Web Services
Login -> Change Region: Choose your region Services -> Compute -> EC2 -> Create Choose an AMI: Ubuntu 18.04 Instance Type: z1d.large Instance Details -> Tenancy: Dedicated (optional: this will more than triple the cost) Storage: 50gb disk (or whatever, you're in control of the map roster) Security Groups: Create a new Security Group Security group name: pavlov-server Description: pavlov server Rules: Type: Custom ICMP Rule - IPV4 / Protocol: Echo Request Type: Custom UDP Rule / Port Range: 7000 / Source: 0.0.0.0/0 Type: Custom UDP Rule / Port Range: 7200 / Source: 0.0.0.0/0 Type: Custom UDP Rule / Port Range: 7777 / Source: 0.0.0.0/0 Type: SSH (optional, but I assume you wanna SSH in..) Launch -> Create new Keypair -> Download -> Launch Once it's started, SSH in like: $ ssh -i your-key.pem firstname.lastname@example.org (I use cmder on Windows, if you're using putty or mobaxterm or something, might be different)
Google Cloud Platform
Menu -> Vpc network -> firewall rules [Create firewall rule] Name: pavlov server Target Tags: pavlov-server Source IP Ranges: 0.0.0.0/0 Protocols and Ports -> Specified protocols and ports -> UDP: 7, 7000, 7200, 7777 [save] Menu -> compute engine -> VM instances create instance - region: wherever you like - machine type: highcpu 4 - boot disk: Ubuntu 18.04 - boot disk -> size: 50gb - network tags: pavlov-server - [create] - Menu -> Compute Engine -> Metadata -> SSH Keys -  -> [add item] - "Enter entire key data": the syntax must be `<key> <username>` - [save]
Advanced Server Administration
Running multiple servers on one host
- Make multiple server installs by defining a separate install dir for each server.
- Run each server with a unique port. eg: ./PavlovServer.sh -PORT="Desired Port"
- Ensure the ports are forwarded and opened in your firewall
To duplicate directories:
be in the steam home folder
cp -R pavlovserver pavlovserver1
Supervising the server
Running ./PavlovServer.sh in your interactive shell is easy, but the server will shut down when you close your terminal. If you want to run the server in the background, you'll want to run it under a supervisor. There are many options, ranging from the simple (nohup, screen or tmux), to the more robust (supervisord, systemd).
Systemd is running by default on Ubuntu Linux, so we'll use that here.
To run the server as a systemd service, create the file /etc/systemd/system/pavlovserver.service (as root) with the contents
[Unit] Description=Pavlov VR dedicated server [Service] Type=simple WorkingDirectory=/home/steam/pavlovserver ExecStart=/home/steam/pavlovserver/PavlovServer.sh # XXX the server will often crash on round end/map change with a segfault # until dave hires more programmers, just restart the server every time RestartSec=1 Restart=always User=steam Group=steam [Install] WantedBy = multi-user.target
Change the user or paths as appropriate. After saving the service file, to start, restart, stop, or monitor the server:
sudo systemctl start pavlovserver sudo systemctl restart pavlovserver sudo systemctl stop pavlovserver sudo systemctl status pavlovserver
To view the logs:
sudo journalctl -u pavlovserver # to live-tail the logs sudo journalctl -u pavlovserver -f
If you want to run the pavlov server as soon as your server boots (e.g. a VPS you turn on and off), add pavlov as a startup service:
sudo systemctl enable pavlovserver
Here's some executables you can create to help, after setting these up they should be the only commands you need to run on your server. Descriptions on what they are, and how to install and use them are in the comment blocks.
#!/bin/bash -e # /usr/bin/pav-edit # usage: pav-edit # stops the server, edits the config, updates the server, starts the server, then tails the logs # doesn't need to be run as the "steam" user # does assume you've setup systemd as per the wiki echo "stopping server..." sudo service pavlovserver stop echo "opening config..." sudo vim /home/steam/pavlovserver/Pavlov/Saved/Config/LinuxServer/Game.ini echo "updating server binary..." cd /home/steam/Steam sudo -u steam ./steamcmd.sh +login anonymous +force_install_dir /home/steam/pavlovserver +app_update 622970 +exit echo "starting server..." sudo service pavlovserver start echo "tailing logs..." /usr/bin/pav-logs echo "pav-edit complete"
#!/bin/bash -e # /usr/bin/pav-edit # usage: pav-edit # stops the server, edits the config, updates the server, starts the server, then tails the logs # doesn't need to be run as the "steam" user # does assume you've setup the service manager as per the wiki tail -f -n1000 /home/steam/pavlovserver/Pavlov/Saved/Logs/Pavlov.log | grep -v 'Sending heartbeat to masterserver'
To run the server without outputting the heartbeat:
./PavlovServer.sh | sed '/heartbeat/d'
To monitor the logs (without heartbeat) from another terminal:
tail -f -n10000 /home/steam/pavlovserver/Pavlov/Saved/Logs/Pavlov.log | grep -v 'Sending heartbeat to masterserver'
Check your CPU Clock Speed with:
lscpu | grep MHz
Map wont load (kicks to datacenter)
try deleting all the downloaded workshop maps with:
sudo rm -rf /tmp/workshop/7777/content/555160/*for all maps or
sudo rm -rf /tmp/workshop/7777/content/555160/whatever-UGCfor specific map
Server segfaults on round end/map change
If your server hangs at the end of the round and you see errors in the log similar to
Unhandled Exception: SIGSEGV: invalid attempt to read memory at address 0x000000000000390a
It's a known issue. There's no real workaround except to restart the server once it fails. The config in #Using Systemd will do this for you, or other supervisors can do the same.
If you have a map rotation, a simple workaround to the rotation starting at the first map after every round is to randomize map rotation every time the server restarts. e.g.
# in PavlovServer.sh before the last line that launches the server # shuffle map rotation on start to workaround crashing bug shuf -o Pavlov/Saved/Config/LinuxServer/Game.ini Pavlov/Saved/Config/LinuxServer/Game.ini
There's still a chance you'll get a map repeat of course, but it'll be rarer.
There's a #custom-servers channel on the official Pavlov Discord - https://discord.gg/Pavlov-VR. Lots of helpful people there!