akkoma/installation/akkoma.service

[Unit]
Description=Akkoma social network
After=network.target postgresql.service

[Service]
ExecReload=/bin/kill $MAINPID
Restart=on-failure

; Uncomment this if you're on Arch Linux
; Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl"
; Uncomment if using asdf to manage Elixir and Erlang
; Environment="PATH=/var/lib/akkoma/.asdf/shims:/var/lib/akkoma/.asdf/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

; Name of the user that runs the Akkoma service.
User=akkoma
; Declares that Akkoma runs in production mode.
Environment="MIX_ENV=prod"

; Don't listen epmd on 0.0.0.0
Environment="ERL_EPMD_ADDRESS=127.0.0.1"

; Don't busy wait
Environment="ERL_AFLAGS=+sbwt none +sbwtdcpu none +sbwtdio none"

; Make sure that all paths fit your installation.
; Path to the home directory of the user running the Akkoma service.
Environment="HOME=/var/lib/akkoma"
; Path to the folder containing the Akkoma installation.
WorkingDirectory=/opt/akkoma
; Path to the Mix binary.
ExecStart=/usr/bin/mix phx.server
; If using asdf comment the above line and uncomment the one below instead
; ExecStart=/var/lib/akkoma/.asdf/shims/mix phx.server

; Some security directives.
; Use private /tmp and /var/tmp folders inside a new file system namespace, which are discarded after the process stops.
PrivateTmp=true
; The /home, /root, and /run/user folders can not be accessed by this service anymore. If your Akkoma user has its home folder in one of the restricted places, or use one of these folders as its working directory, you have to set this to false.
ProtectHome=true
; Mount /usr, /boot, and /etc as read-only for processes invoked by this service.
ProtectSystem=full
; Sets up a new /dev mount for the process and only adds API pseudo devices like /dev/null, /dev/zero or /dev/random but not physical devices. Disabled by default because it may not work on devices like the Raspberry Pi.
PrivateDevices=false
; Ensures that the service process and all its children can never gain new privileges through execve(). 
NoNewPrivileges=true
; Drops the sysadmin capability from the daemon.
CapabilityBoundingSet=~CAP_SYS_ADMIN

[Install]
WantedBy=multi-user.target