Gmer4Lfe
cf21efaeea
Watchdog renames and moves: system_watchdog.sh → stability_watchdog.sh (last line of defense — reboots) storage_watchdog.sh → Watchdogs/System/storage_watchdog.sh webgui_restart.sh → Watchdogs/System/webgui_watchdog.sh (renamed to match folder convention) New thin orchestrator: Watchdogs/system_watchdog.sh — runs SYSTEM_WATCHDOG_SCRIPTS from master.conf Sits between docker_watchdog and stability_watchdog in the orchestrator tier chain System/ subfolder is the growth seam for future system component watchdogs master.conf: WATCHDOG_ORCHESTRATOR_SCRIPTS updated — storage removed, system_watchdog added as tier SYSTEM_WATCHDOG_SCRIPTS array added — storage + webgui server_reboot.sh: Calls array_stopping.sh before VM shutdown for guaranteed safe array stop Removed raw rc.docker stop and exit trap — orchestrator owns container shutdown
302 lines
12 KiB
Bash
302 lines
12 KiB
Bash
#!/bin/bash
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# ==============================================================================================
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# ================================= WebGUI Watchdog ============================================
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# ==============================================================================================
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#
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# PURPOSE
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# ─────────────────────────────────────────────────────────────────────────────
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# Monitors the unRAID WebGUI and restarts services if unresponsive. Uses a
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# three-step escalating strategy — lightest fix first, heaviest last. Run
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# every 5–10 minutes via the User Scripts plugin. Silent when healthy.
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#
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# ==============================================================================================
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# OPERATIONAL MODEL
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# ==============================================================================================
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#
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# Escalation Path
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# WebGUI responding → log() + exit 0 (completely silent ✅)
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#
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# Not responding:
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# Step 1 — nginx restart
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# Lightest fix — handles most transient WebGUI failures:
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# nginx crash, worker stuck, connection timeout.
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# Wait WEBGUI_NGINX_WAIT seconds → recheck.
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#
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# Step 2 — php-fpm restart
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# WebGUI runs through PHP-FPM. Worker exhaustion causes silent
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# failure — requests queue and the WebGUI appears frozen.
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# Wait WEBGUI_PHP_WAIT seconds → recheck.
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#
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# Step 3 — emhttp restart
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# Heaviest fix. emhttp is the unRAID management daemon.
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# Array, Docker, and shares stay running — only WebGUI
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# management restarts. Takes longer — WEBGUI_EMHTTP_WAIT.
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# Wait WEBGUI_EMHTTP_WAIT seconds → recheck.
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#
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# All three failed → notify, manual intervention needed → exit 1.
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#
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# ==============================================================================================
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# OPERATIONAL SAFEGUARDS
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# ==============================================================================================
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#
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# Root Required
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# Service restart commands require root.
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#
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# Single Instance Lock
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# acquire_lock prevents concurrent runs double-restarting services.
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#
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# Process Verify After Each Restart
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# pgrep check after each rc.* command — errors if process not running.
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#
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# Silent When Healthy
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# Completely silent on healthy cycles. Only produces output when recovering.
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#
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# ==============================================================================================
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# CONFIGURATION
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# ==============================================================================================
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#
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# master.conf
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#
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# WEBGUI_URL
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# URL to check for WebGUI response. (default: http://localhost)
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#
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# WEBGUI_TIMEOUT
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# curl timeout in seconds. (default: 5)
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#
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# WEBGUI_NGINX_WAIT
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# Seconds after nginx restart before rechecking. (default: 15)
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#
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# WEBGUI_PHP_WAIT
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# Seconds after php-fpm restart before rechecking. (default: 10)
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#
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# WEBGUI_EMHTTP_WAIT
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# Seconds after emhttp restart before rechecking. (default: 30)
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#
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# ==============================================================================================
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# RUNTIME MODES
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# ==============================================================================================
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#
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# webgui_watchdog.sh
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# Check WebGUI. Escalate through nginx → php-fpm → emhttp if unresponsive.
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#
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# webgui_watchdog.sh --dry-run
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# Show which services would be restarted. No restarts, no waits.
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#
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# webgui_watchdog.sh --status
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# Show current WebGUI response state and nginx/php-fpm/emhttp process states.
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#
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# webgui_watchdog.sh --log
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# Verbose output — show each check, each restart attempt, each wait.
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#
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# ==============================================================================================
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/../../load_config.sh"
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parse_args "$@"
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# ==============================================================================================
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# ━━━ Setup ━━━
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# ==============================================================================================
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if [[ "$EUID" -ne 0 ]]; then
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error "Must be run as root"
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exit 1
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fi
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validate_unraid_cmd \
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"/usr/local/emhttp/plugins/dynamix/scripts/notify" \
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"" "" \
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"unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
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acquire_lock
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detect_hosts
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[[ "$DRY_RUN" == true ]] && warn "DRY RUN — no services will be restarted"
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# ==============================================================================================
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# ━━━ Status ━━━
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# ==============================================================================================
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if [[ "$SHOW_STATUS" == true ]]; then
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echo ""
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echo "━━━━━ $ICON_SUMMARY WEBGUI WATCHDOG STATUS ━━━━━"
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echo "$ICON_HOST Identity: $MY_ID ($LOCAL_SERVER_NAME)"
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echo "$ICON_WEBGUI URL: $WEBGUI_URL"
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echo "$ICON_WEBGUI Timeouts: curl=${WEBGUI_TIMEOUT}s nginx=${WEBGUI_NGINX_WAIT}s php=${WEBGUI_PHP_WAIT:-10}s emhttp=${WEBGUI_EMHTTP_WAIT}s"
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echo ""
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if curl -sf --max-time "$WEBGUI_TIMEOUT" "$WEBGUI_URL" >/dev/null 2>&1; then
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echo " $ICON_SUCCESS WebGUI: responding ✅"
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else
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echo " $ICON_ERROR WebGUI: NOT responding"
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fi
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pgrep -x nginx >/dev/null 2>&1 && \
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echo " $ICON_SUCCESS nginx: running ✅" || \
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echo " $ICON_ERROR nginx: NOT running"
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pgrep -f "php-fpm" >/dev/null 2>&1 && \
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FPM_COUNT=$(pgrep -fc "php-fpm" 2>/dev/null || echo "?") && \
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echo " $ICON_SUCCESS php-fpm: running ($FPM_COUNT workers) ✅" || \
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echo " $ICON_ERROR php-fpm: NOT running"
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pgrep emhttpd >/dev/null 2>&1 && \
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echo " $ICON_SUCCESS emhttp: running ✅" || \
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echo " $ICON_ERROR emhttp: NOT running"
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echo "━━━━━━━━━━━━━━━━━━━━━━━"
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exit 0
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fi
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# ==============================================================================================
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# ── CHECK AND ESCALATE ────────────────────────────────────────────────────────────────────────
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# ==============================================================================================
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check_webgui() {
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curl -sf --max-time "$WEBGUI_TIMEOUT" "$WEBGUI_URL" >/dev/null 2>&1
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}
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START=$(date +%s)
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RECOVERY_ACTION=""
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RECOVERY_OK=false
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log "WebGUI check — $WEBGUI_URL"
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# ── Healthy — completely silent ───────────────────────────────────────────────────────────────
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if check_webgui; then
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log "WebGUI responding — healthy ✅"
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exit 0
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fi
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# ── Not responding — begin escalation ────────────────────────────────────────────────────────
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echo ""
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echo "━━━ $ICON_WEBGUI WebGUI Watchdog — $(date '+%Y-%m-%d %H:%M:%S') ━━━"
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echo "$ICON_HOST $MY_ID ($LOCAL_SERVER_NAME)"
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echo ""
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warn "WebGUI not responding at $WEBGUI_URL — beginning escalation"
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# ── Step 1 — nginx restart ────────────────────────────────────────────────────────────────────
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echo ""
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echo "━━━ Step 1 — nginx Restart ━━━"
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would restart nginx"
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else
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warn "Restarting nginx..."
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if /etc/rc.d/rc.nginx restart >/dev/null 2>&1; then
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# Verify nginx actually running
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sleep 2
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if pgrep -x nginx >/dev/null 2>&1; then
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warn "nginx restarted ✅"
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else
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error "nginx not running after restart command"
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fi
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else
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error "nginx restart command failed"
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fi
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log "Waiting ${WEBGUI_NGINX_WAIT}s for nginx to recover..."
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sleep "$WEBGUI_NGINX_WAIT"
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if check_webgui; then
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RECOVERY_ACTION="nginx restart"
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RECOVERY_OK=true
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fi
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fi
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# ── Step 2 — php-fpm restart ──────────────────────────────────────────────────────────────────
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if [[ "$RECOVERY_OK" == false ]]; then
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echo ""
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echo "━━━ Step 2 — php-fpm Restart ━━━"
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warn "WebGUI still not responding — restarting php-fpm"
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warn "WebGUI may be frozen due to worker exhaustion (check system_tuning_monitor.sh)"
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would restart php-fpm"
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else
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if /etc/rc.d/rc.php-fpm restart >/dev/null 2>&1; then
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sleep 2
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if pgrep -f "php-fpm" >/dev/null 2>&1; then
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warn "php-fpm restarted ✅"
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else
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error "php-fpm not running after restart command"
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fi
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else
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error "php-fpm restart command failed"
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fi
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log "Waiting ${WEBGUI_PHP_WAIT:-10}s for php-fpm to recover..."
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sleep "${WEBGUI_PHP_WAIT:-10}"
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if check_webgui; then
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RECOVERY_ACTION="php-fpm restart"
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RECOVERY_OK=true
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fi
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fi
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fi
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# ── Step 3 — emhttp restart ───────────────────────────────────────────────────────────────────
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if [[ "$RECOVERY_OK" == false ]]; then
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echo ""
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echo "━━━ Step 3 — emhttp Restart ━━━"
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warn "WebGUI still not responding — restarting emhttp (unRAID management daemon)"
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warn "Array, Docker, and shares remain running — WebGUI management will briefly restart"
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would restart emhttp"
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else
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if /usr/local/sbin/emhttp stop >/dev/null 2>&1 && /usr/local/sbin/emhttp start >/dev/null 2>&1; then
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sleep 2
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if pgrep emhttpd >/dev/null 2>&1; then
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warn "emhttp restarted ✅"
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else
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error "emhttp not running after restart command"
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fi
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else
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error "emhttp restart command failed"
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fi
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log "Waiting ${WEBGUI_EMHTTP_WAIT}s for emhttp to recover..."
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sleep "$WEBGUI_EMHTTP_WAIT"
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if check_webgui; then
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RECOVERY_ACTION="emhttp restart"
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RECOVERY_OK=true
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fi
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fi
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fi
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END=$(date +%s)
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# ==============================================================================================
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# ━━━ Summary ━━━
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# ==============================================================================================
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echo ""
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echo "━━━━━ $ICON_SUMMARY WEBGUI WATCHDOG SUMMARY ━━━━━"
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echo "$ICON_HOST Identity: $MY_ID ($LOCAL_SERVER_NAME)"
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echo "$ICON_WEBGUI URL: $WEBGUI_URL"
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echo "$ICON_TIME Duration: $(format_duration $(( END - START )))"
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echo ""
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — no services restarted"
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echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
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exit 0
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fi
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if [[ "$RECOVERY_OK" == true ]]; then
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warn "$ICON_SUCCESS WebGUI recovered via: $RECOVERY_ACTION"
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notify "WebGUI recovered on $(hostname) ($MY_ID) via $RECOVERY_ACTION — monitor for recurrence" \
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"WebGUI Watchdog" "warning"
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else
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echo "$ICON_ERROR Status: UNRECOVERED — all three restart steps failed"
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echo "$ICON_ERROR Manual intervention needed:"
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echo " 1. Check: pgrep nginx; pgrep emhttpd"
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echo " 2. Check: journalctl -u nginx --since '10 minutes ago'"
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echo " 3. Try: server_reboot.sh if nothing else works"
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notify "WebGUI UNRECOVERED on $(hostname) ($MY_ID) — nginx + php-fpm + emhttp restart all failed — manual intervention needed" \
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"WebGUI Watchdog" "warning"
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fi
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echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
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[[ "$RECOVERY_OK" == false && "$DRY_RUN" == false ]] && exit 1
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exit 0 |