gilles
3ea2e66359
- précheck en tête : refuse proprement si OS != debian (os_not_supported), si netplan présent (unsupported_network_manager) ou si /etc/network/interfaces absent (ifupdown_not_found) — au lieu d'écrire une conf inopérante - manifeste : label « (Debian/VM) » + description précisant la cible ifupdown et l'application au reboot Validé en réel sur Debian VM (ens18) : strophe DHCP commentée + drop-in statique. sh -n OK · tsc 0 · 113 tests. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
98 lines
3.7 KiB
Smarty
98 lines
3.7 KiB
Smarty
#!/bin/sh
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# Identité + réseau : hostname, /etc/hosts, IP statique (ifupdown drop-in).
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# Le changement d'IP s'applique AU REBOOT (on ne coupe jamais SSH en live).
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# Sauvegardes horodatées avant toute écriture. Échec contrôlé.
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export LC_ALL=C
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HOST="{{newHostname}}"
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DOMAIN="{{domain}}"
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IFACE="{{interfaceName}}"
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ADDR="{{staticAddress}}"
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GW="{{gateway}}"
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DNS="{{dnsNameservers}}"
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echo "===SU:CUSTOM_IDENTITY==="
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# --- Précheck : Debian + ifupdown uniquement (MVP, cible VM netinstall) ---
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. /etc/os-release 2>/dev/null
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if [ "$ID" != "debian" ]; then
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echo "ERR=os_not_supported"
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echo "DETAIL=identity_network ne gère que Debian (ID=$ID)"
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echo "===SU:EXIT=2==="
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exit 2
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fi
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if ls /etc/netplan/*.yaml >/dev/null 2>&1; then
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echo "ERR=unsupported_network_manager"
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echo "DETAIL=netplan détecté ; ce profil cible ifupdown"
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echo "===SU:EXIT=2==="
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exit 2
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fi
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if [ ! -f /etc/network/interfaces ]; then
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echo "ERR=ifupdown_not_found"
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echo "DETAIL=/etc/network/interfaces absent"
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echo "===SU:EXIT=2==="
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exit 2
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fi
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# --- Sauvegardes ---
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TS=$(date +%s)
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cp -a /etc/hosts "/etc/hosts.su.bak.${TS}" 2>/dev/null
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[ -f /etc/network/interfaces ] && cp -a /etc/network/interfaces "/etc/network/interfaces.su.bak.${TS}" 2>/dev/null
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[ -f /etc/hostname ] && cp -a /etc/hostname "/etc/hostname.su.bak.${TS}" 2>/dev/null
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echo "OLD_ENDPOINT={{dhcpEndpoint}}"
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# --- Hostname (immédiat, ne coupe pas SSH) ---
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if hostnamectl set-hostname "$HOST" 2>/dev/null || { printf '%s\n' "$HOST" > /etc/hostname; }; then
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printf '%s\n' "$HOST" > /etc/hostname
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echo "HOSTNAME_SET=$HOST"
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echo "FILE_MODIFIED=/etc/hostname"
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else
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echo "ERR=hostname_failed"
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fi
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# --- /etc/hosts : ligne 127.0.1.1 <fqdn> <host> ---
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FQDN="$HOST"
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[ -n "$DOMAIN" ] && FQDN="$HOST.$DOMAIN"
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if grep -qE '^127\.0\.1\.1' /etc/hosts 2>/dev/null; then
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sed -i -E "s|^127\.0\.1\.1.*|127.0.1.1\t${FQDN} ${HOST}|" /etc/hosts && echo "FILE_MODIFIED=/etc/hosts"
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else
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printf '127.0.1.1\t%s %s\n' "$FQDN" "$HOST" >> /etc/hosts && echo "FILE_MODIFIED=/etc/hosts"
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fi
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# --- IP statique (ifupdown drop-in, appliqué au reboot) ---
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if ip link show "$IFACE" >/dev/null 2>&1; then
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echo "IFACE_OK=$IFACE"
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mkdir -p /etc/network/interfaces.d
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# S'assure que le fichier principal source le répertoire interfaces.d.
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if [ -f /etc/network/interfaces ] && ! grep -qE '^[[:space:]]*source(-directory)?[[:space:]]+/etc/network/interfaces\.d' /etc/network/interfaces; then
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printf '\nsource /etc/network/interfaces.d/*\n' >> /etc/network/interfaces
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fi
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# Neutralise (commente) toute strophe existante de l'interface dans le fichier principal.
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if [ -f /etc/network/interfaces ]; then
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awk -v IFACE="$IFACE" '
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$0 ~ "^[[:space:]]*(auto|allow-hotplug)[[:space:]]+" IFACE "([[:space:]]|$)" { print "#SU# " $0; next }
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$0 ~ "^[[:space:]]*iface[[:space:]]+" IFACE "([[:space:]]|$)" { inblk=1; print "#SU# " $0; next }
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inblk==1 && $0 ~ /^[[:space:]]+[^[:space:]]/ { print "#SU# " $0; next }
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inblk==1 { inblk=0 }
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{ print }
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' /etc/network/interfaces > /etc/network/interfaces.su.tmp && cat /etc/network/interfaces.su.tmp > /etc/network/interfaces && rm -f /etc/network/interfaces.su.tmp
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fi
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# Écrit la configuration statique en drop-in.
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{
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echo "auto $IFACE"
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echo "iface $IFACE inet static"
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echo " address $ADDR"
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echo " gateway $GW"
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[ -n "$DNS" ] && echo " dns-nameservers $DNS"
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} > "/etc/network/interfaces.d/${IFACE}.cfg"
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echo "FILE_MODIFIED=/etc/network/interfaces.d/${IFACE}.cfg"
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echo "STATIC_TARGET=$ADDR gw $GW dns $DNS"
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else
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echo "ERR=interface_not_found"
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fi
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echo "NEW_ENDPOINT={{reconnectHost}}"
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echo "RECONNECT_REQUIRED=1"
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echo "NETWORK_APPLIES_ON=reboot"
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{{#rebootAfterInstall}}echo "REBOOT_REQUESTED=1"{{/rebootAfterInstall}}
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echo "===SU:EXIT=0==="
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