3230ec5bb4
Older systemd (< 230, common on Pi OS Buster/Bullseye) rejects these keys in [Service] with 'Unknown key' warning and ignores them, meaning no restart rate-limiting was enforced. Also includes pi-setup.sh fix for hardcoded user/home from previous session.
53 lines
1.8 KiB
Desktop File
53 lines
1.8 KiB
Desktop File
[Unit]
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Description=Infoscreen Simclient (MQTT communication)
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Documentation=https://github.com/RobbStarkAustria/infoscreen_client_2025
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# Simclient needs network before starting — MQTT will fail otherwise.
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After=network-online.target
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Wants=network-online.target
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# Publish an MQTT alert if systemd gives up restarting (StartLimitBurst exceeded).
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OnFailure=infoscreen-notify-failure@%n.service
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# StartLimit* must live in [Unit] for compatibility with older systemd (< 230).
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StartLimitIntervalSec=60
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StartLimitBurst=5
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[Service]
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# notify: simclient sends READY=1 via sd_notify once fully initialised.
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# WatchdogSec: if WATCHDOG=1 is not sent within this window, systemd kills
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# and restarts the process — detects hung/deadlocked main loops.
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Type=notify
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WatchdogSec=60
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User=olafn
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Group=olafn
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WorkingDirectory=/home/olafn/infoscreen-dev
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# Load all client configuration from the local .env file.
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# Keep .env mode 600; systemd reads it as root before dropping privileges.
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EnvironmentFile=/home/olafn/infoscreen-dev/.env
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# Start simclient
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ExecStart=/home/olafn/infoscreen-dev/scripts/start-simclient.sh
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# Restart on failure (non-zero exit or signal).
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# This covers crash recovery AND the reboot-command lifecycle:
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# 1. Server sends reboot_host command
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# 2. Simclient publishes accepted + execution_started, then exits
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# 3. Systemd restarts simclient within RestartSec seconds
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# 4. On reconnect, heartbeat loop detects pending_recovery_command and
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# publishes completed — closing the lifecycle cleanly.
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Restart=on-failure
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RestartSec=10
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StandardOutput=journal
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StandardError=journal
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SyslogIdentifier=infoscreen-simclient
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# Security settings
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NoNewPrivileges=true
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PrivateTmp=true
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# Resource limits
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LimitNOFILE=65536
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[Install]
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# Simclient runs in multi-user mode — no graphical session required.
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WantedBy=multi-user.target
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