From c46e18b8b5b16ca2ede06013543f0831712dd85d Mon Sep 17 00:00:00 2001
From: xavye <xavier.laboulle@gmail.com>
Date: Wed, 14 Jan 2026 13:03:22 +0000
Subject: [PATCH] Actualiser automated_shutdown/read.me

---
 automated_shutdown/read.me | 87 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 86 insertions(+), 1 deletion(-)

diff --git a/automated_shutdown/read.me b/automated_shutdown/read.me
index 1c21288..86ec8e9 100644
--- a/automated_shutdown/read.me
+++ b/automated_shutdown/read.me
@@ -1,2 +1,87 @@
 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.
\ No newline at end of file
+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.
\ No newline at end of file