safeguard: check Docker/VM Manager enabled before acting

common.sh: add is_docker_enabled() and is_vm_manager_enabled() helpers
reading /boot/config/docker.cfg and /boot/config/domain.cfg.

docker_watchdog: exit cleanly if Docker not enabled in Unraid settings.
stability_watchdog: skip Docker daemon check and Docker container stop
if Docker not enabled; skip virsh VM shutdown if VM Manager not enabled.
server_reboot: skip VM shutdown and libvirt stop if VM Manager not enabled.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Watchdogs/docker_watchdog.sh

@@ -240,6 +240,11 @@ acquire_lock
 # detect_hosts() sets MY_ID and aliases all HOST*_WATCHDOG_* arrays
 detect_hosts
 
+if ! is_docker_enabled; then
+    log "Docker not enabled in Unraid settings — skipping cycle"
+    exit 0
+fi
+
 if ! command -v docker >/dev/null 2>&1; then
     error "Docker not found — cannot start watchdog"
     exit 1

Watchdogs/stability_watchdog.sh

@@ -424,17 +424,19 @@ do_reboot() {
     log_reboot
 
     # Graceful shutdown sequence
-    warn "Shutting down VMs..."
+    if is_vm_manager_enabled && command -v virsh >/dev/null 2>&1; then
-    if command -v virsh >/dev/null 2>&1; then
+        warn "Shutting down VMs..."
         for VM in $(virsh list --name 2>/dev/null); do
             [[ -z "$VM" ]] && continue
             virsh shutdown "$VM" >/dev/null 2>&1
         done
         sleep 30
+    else
+        log "VM Manager not enabled — skipping VM shutdown"
     fi
 
     warn "Stopping Docker containers..."
-    if command -v docker >/dev/null 2>&1; then
+    if is_docker_enabled && command -v docker >/dev/null 2>&1; then
         mapfile -t _SYS_REBOOT_STOPPED < <(docker ps --format '{{.Names}}' 2>/dev/null)
         trap _trap_sys_reboot_restart EXIT
         timeout 60 docker ps -q 2>/dev/null | xargs -r docker stop >/dev/null 2>&1
@@ -476,7 +478,7 @@ echo "━━━ $ICON_REBOOT Stability Watchdog — $(date '+%Y-%m-%d %H:%M:%S')
     # docker_watchdog owns daemon restart attempts (strike system + rc.docker restart).
     # When restart fails and daemon is confirmed down, it writes daemon_confirmed_down=true
     # to WATCHDOG_STATE_FILE. We read that flag and run through the standard strike system.
-    if [[ "$SYS_WATCHDOG_CHECK_DOCKER_DAEMON" == true ]]; then
+    if [[ "$SYS_WATCHDOG_CHECK_DOCKER_DAEMON" == true ]] && is_docker_enabled; then
         _daemon_down=$(grep -oP "(?<=^daemon_confirmed_down:)[^:]*" "$WATCHDOG_STATE_FILE" 2>/dev/null || echo "false")
         TRIGGERED=false
         [[ "$_daemon_down" == "true" ]] && TRIGGERED=true
@@ -484,6 +486,8 @@ echo "━━━ $ICON_REBOOT Stability Watchdog — $(date '+%Y-%m-%d %H:%M:%S')
             TRIGGERS+=("docker_daemon_unresponsive")
         [[ "$TRIGGERED" == true ]] && log "Docker daemon confirmed down — strike toward reboot" || \
             log "Docker daemon flag clear ✅"
+    elif [[ "$SYS_WATCHDOG_CHECK_DOCKER_DAEMON" == true ]]; then
+        log "Docker not enabled — skipping daemon check"
     fi
 
     # ── rootfs critical — at 99%+ writes are failing ─────────────────────────────────────────

common.sh

@@ -719,6 +719,20 @@ check_rsync_enabled() {
     return 0
 }
 
+# ==============================================================================================
+# ── UNRAID SERVICE STATE ──────────────────────────────────────────────────────────────────────
+# ==============================================================================================
+# Reads Unraid config files to check whether Docker and VM Manager are enabled.
+# Use these guards before any script that manages containers or VMs.
+
+is_docker_enabled() {
+    [[ "$(grep -oP '(?<=DOCKER_ENABLED=")[^"]+' /boot/config/docker.cfg 2>/dev/null)" == "yes" ]]
+}
+
+is_vm_manager_enabled() {
+    [[ "$(grep -oP '(?<=SERVICE=")[^"]+' /boot/config/domain.cfg 2>/dev/null)" == "enable" ]]
+}
+
 # ==============================================================================================
 # ── LOCAL HEALTH CHECKS ───────────────────────────────────────────────────────────────────────
 # ==============================================================================================

unRAID_Essentials/server_reboot.sh

@@ -252,7 +252,7 @@ fi
 # ==============================================================================================
 # ━━━ Graceful VM Shutdown ━━━
 # ==============================================================================================
-if command -v virsh >/dev/null 2>&1; then
+if is_vm_manager_enabled && command -v virsh >/dev/null 2>&1; then
     VM_LIST=$(virsh list --name 2>/dev/null | grep -v "^$" || true)
     if [[ -n "$VM_LIST" ]]; then
         echo ""
@@ -272,7 +272,11 @@ if command -v virsh >/dev/null 2>&1; then
             log "Waiting ${VM_WAIT}s for VMs to shut down..."
             sleep "$VM_WAIT"
         fi
+    else
+        log "VM Manager enabled but no VMs running — skipping shutdown"
     fi
+else
+    log "VM Manager not enabled — skipping VM shutdown"
 fi
 
 # ==============================================================================================
@@ -280,7 +284,9 @@ fi
 # ==============================================================================================
 echo ""
 echo "━━━ $ICON_GEAR Stop VM Manager ━━━"
-if [[ "$DRY_RUN" == true ]]; then
+if ! is_vm_manager_enabled; then
+    log "VM Manager not enabled — skipping"
+elif [[ "$DRY_RUN" == true ]]; then
     warn "DRY RUN — would stop VM Manager (libvirt)"
 else
     if /etc/rc.d/rc.libvirt stop >/dev/null 2>&1; then