# Example unit — op-challenger [Unit] Description=OP Stack op-challenger — example After=network-online.target Wants=network-online.target [Service] Type=simple User=opstack Group=opstack WorkingDirectory=/opt/op-stack EnvironmentFile=-/etc/op-stack/challenger.env # ExecStart=/opt/op-stack/bin/op-challenger ... ExecStart=/bin/false Restart=on-failure RestartSec=20 [Install] WantedBy=multi-user.target