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