Valheim dedicated server systemd unit file

valheim.service

# make sure to adjust ALL paths and user/group in the service file (also the ones under "Security and Sandboxing")

[Unit]
Description=Valheim dedicated server
Wants=network-online.target
After=syslog.target network.target nss-lookup.target network-online.target


[Service]
Environment="LD_LIBRARY_PATH=/home/steam/servers/valheim/linux64"
User=steam
Group=steam
WorkingDirectory=/home/steam/servers/valheim/

#StandardOutput=null

# longer start timeout to allow steamcmd to download updates before starting the server
TimeoutStartSec=600

ExecStartPre=/home/steam/steamcmd +login anonymous +force_install_dir /home/steam/servers/valheim +app_update 896660 +quit

# for different data path use -savedir path
ExecStart=/home/steam/servers/valheim/valheim_server.x86_64 -name "SERVERNAME" -port 2456 -world "WORLDNAME" -password "PASSWORD"

KillSignal=SIGINT

Restart=on-failure
RestartSec=5m


# Security and Sandboxing
NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectControlGroups=yes
ProtectSystem=strict
ProtectHome=read-only
SystemCallFilter=~@mount
ReadWritePaths=/home/steam/servers/valheim
ReadWritePaths=/home/steam/.config
ReadWritePaths=/home/steam/.steam
ReadWritePaths=/home/steam/steamcmd


[Install]
WantedBy=multi-user.target