Core Lightning CLN systemd service unit (/etc/systemd/system/core-lightning.service)

core-lightning.service

[Unit]
Description=Core Lightning
After=network.target

[Service]
ExecStart=/usr/local/bin/lightningd --alias myalias --rbg 000000 --network bitcoin --daemon --pid-file /run/lightningd/lightningd.pid --log-file /home/bitcoin/.lightning/debug.log --proxy 127.0.0.1 --fee-base=0 --fee-per-satoshi=25
PermissionsStartOnly=yes
RuntimeDirectoryMode=0775
RuntimeDirectory=lightningd
RuntimeDirectoryPreserve=yes
User=bitcoin
Group=bitcoin
Type=forking
Restart=on-failure
RestartSec=20
PIDFile=/run/lightningd/lightningd.pid

# Hardening measures
####################

# Provide a private /tmp and /var/tmp.
PrivateTmp=true

# Use a new /dev namespace only populated with API pseudo devices
# such as /dev/null, /dev/zero and /dev/random.
PrivateDevices=true

# Deny the creation of writable and executable memory mappings.
MemoryDenyWriteExecute=true

[Install]
WantedBy=multi-user.target