yunohost_demo/demo_upgrade.sh

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#!/bin/bash
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# Script d'upgrade des 2 conteneurs de demo.
# Ce script n'a vocation qu'a être dans un cron
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# Récupère le dossier du script
if [ "${0:0:1}" == "/" ]; then script_dir="$(dirname "$0")"; else script_dir="$PWD/$(dirname "$0" | cut -d '.' -f2)"; fi
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PLAGE_IP=$(cat "$script_dir/demo_lxc_build.sh" | grep PLAGE_IP= | cut -d '=' -f2)
LXC_NAME1=$(cat "$script_dir/demo_lxc_build.sh" | grep LXC_NAME1= | cut -d '=' -f2)
LXC_NAME2=$(cat "$script_dir/demo_lxc_build.sh" | grep LXC_NAME2= | cut -d '=' -f2)
TIME_TO_SWITCH=$(cat "$script_dir/demo_lxc_build.sh" | grep TIME_TO_SWITCH= | cut -d '=' -f2)
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UPGRADE_DEMO_CONTAINER () { # Démarrage, upgrade et snapshot
MACHINE=$1
# Attend que la machine soit éteinte.
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TIME_OUT=$(($TIME_TO_SWITCH * 60 + 300)) # Timeout à $TIME_TO_SWITCH +5 minutes, en seconde
sudo lxc-wait -n $MACHINE -s 'STOPPED' -t $TIME_OUT
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# Restaure le snapshot
sudo lxc-snapshot -r snap0 $MACHINE
# Démarre le conteneur
sudo lxc-start -n $MACHINE -d
sleep 10
# Update
sudo lxc-attach -n $MACHINE -- apt-get update
sudo lxc-attach -n $MACHINE -- apt-get dist-upgrade --dry-run | grep -q "^Inst " # Vérifie si il y aura des mises à jour.
update_apt=0
if [ "$?" -eq 0 ]; then
update_apt=1
fi
# Upgrade
sudo lxc-attach -n $MACHINE -- apt-get dist-upgrade
# Clean
sudo lxc-attach -n $MACHINE -- apt-get autoremove
sudo lxc-attach -n $MACHINE -- apt-get autoclean
# Arrêt de la machine virtualisée
sudo lxc-stop -n $MACHINE
if [ "$update_apt" -eq 1 ]
then
# Archivage du snapshot
sudo tar -cz --acls --xattrs -f /var/lib/lxcsnaps/$MACHINE/snap0.tar.gz /var/lib/lxcsnaps/$MACHINE/snap0
# Remplacement du snapshot
sudo lxc-snapshot -n $MACHINE -d snap0
sudo lxc-snapshot -n $MACHINE
fi
}
# Initialisation du réseau pour le conteneur.
if ! sudo ifquery lxc_demo --state > /dev/null; then
sudo ifup lxc_demo --interfaces=/etc/network/interfaces.d/lxc_demo
fi
# Activation des règles iptables
if ! sudo iptables -D FORWARD -i lxc_demo -o eth0 -j ACCEPT 2> /dev/null; then
sudo iptables -A FORWARD -i lxc_demo -o eth0 -j ACCEPT
fi
if ! sudo iptables -C FORWARD -i eth0 -o lxc_demo -j ACCEPT 2> /dev/null; then
sudo iptables -A FORWARD -i eth0 -o lxc_demo -j ACCEPT
fi
if ! sudo iptables -t nat -C POSTROUTING -s $PLAGE_IP.0/24 -j MASQUERADE 2> /dev/null; then
sudo iptables -t nat -A POSTROUTING -s $PLAGE_IP.0/24 -j MASQUERADE
fi
UPGRADE_DEMO_CONTAINER $LXC_NAME1
UPGRADE_DEMO_CONTAINER $LXC_NAME2