87 lines
2.1 KiB
Markdown
87 lines
2.1 KiB
Markdown
An automated shutdown solution based on the detection of a prolonged ethernet connection loss.
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This is because AscoetPi is connection to the router through a switch which is programmed to shutdown at night.
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Crée un fichier /etc/systemd/system/eth-monitor.service :
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<code>sudo nano /etc/systemd/system/eth-monitor.service</code>
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Colle ce contenu :
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[Unit]
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Description=Ethernet Connection Monitor
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After=network.target
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[Service]
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Type=simple
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ExecStart=/usr/local/bin/check_eth_connection.sh
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Restart=on-failure
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RestartSec=60
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TimeoutStopSec=5
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[Install]
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WantedBy=multi-user.target
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c. Créer le timer systemd pour déclencher l’extinction
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Crée un fichier /etc/systemd/system/eth-monitor.timer :
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<code>sudo nano /etc/systemd/system/eth-monitor.timer</code>
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Colle ce contenu :
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[Unit]
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Description=Timer for Ethernet Connection Monitor
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[Timer]
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OnBootSec=5min
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OnUnitActiveSec=1min
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AccuracySec=1s
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[Install]
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WantedBy=timers.target
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d. Créer un service pour éteindre après 5 minutes de panne
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Crée un fichier /etc/systemd/system/shutdown-on-eth-fail.service :
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sudo nano /etc/systemd/system/shutdown-on-eth-fail.service
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Colle ce contenu :
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[Unit]
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Description=Shutdown on Ethernet Failure
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After=eth-monitor.service
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[Service]
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Type=oneshot
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ExecStart=/bin/sh -c 'if [ $(journalctl -u eth-monitor.service --since "5 minutes ago" | grep -c "is down") -ge 5 ]; then /sbin/shutdown -h now; fi'
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[Install]
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WantedBy=multi-user.target
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e. Activer et démarrer les services
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sudo systemctl daemon-reload
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sudo systemctl enable eth-monitor.service
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sudo systemctl enable eth-monitor.timer
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sudo systemctl enable shutdown-on-eth-fail.service
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sudo systemctl start eth-monitor.timer
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sudo systemctl start eth-monitor.service
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2. Vérifier le bon fonctionnement
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Consulte les logs :
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journalctl -u eth-monitor.service -f
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Teste en débranchant le câble Ethernet et attends 5 minutes.
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3. Explications
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eth-monitor.service : Vérifie l’état de l’interface Ethernet toutes les minutes.
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eth-monitor.timer : Déclenche la vérification régulièrement.
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shutdown-on-eth-fail.service : Compte le nombre de pannes sur les 5 dernières minutes et éteint si nécessaire. |