pi-agent
59f892e73b
- App healer (v7): checks DNS healer every 30s, restarts if down - DNS healer (v2): checks app healer every 60s, restarts if down - scripts/watchdog.sh: ultimate fallback cron job (every 5 min) revives both healers if both are down simultaneously - Installed to /usr/local/bin/falah-watchdog + /etc/cron.d/falah-watchdog Three-layer defense: Layer 1: Docker --restart unless-stopped (instant) Layer 2: Cross-heal between the two healers (30-60s) Layer 3: Cron watchdog (5 min, last resort)
112 lines
3.7 KiB
Bash
112 lines
3.7 KiB
Bash
#!/bin/bash
|
|
# ============================================================
|
|
# Ultimate Watchdog — "Who watches the watchmen?"
|
|
# ============================================================
|
|
# Runs as a cron job every 5 minutes.
|
|
# If BOTH healers are down, brings them back.
|
|
# This is the last line of defense.
|
|
# ============================================================
|
|
|
|
LOG="/var/log/falah/watchdog.log"
|
|
DOCKER=/var/packages/Docker/target/usr/bin/docker
|
|
|
|
mkdir -p "$(dirname "$LOG")"
|
|
|
|
log() {
|
|
echo "[$(date '+%Y-%m-%d %H:%M:%S')] [watchdog] $*" | tee -a "$LOG"
|
|
}
|
|
|
|
check_and_restart() {
|
|
local name="$1"
|
|
local image="${2:-$name:latest}"
|
|
|
|
local status
|
|
status=$($DOCKER ps -a --filter "name=$name" --format '{{.Status}}' 2>/dev/null)
|
|
|
|
if echo "$status" | grep -q "^Up"; then
|
|
return 0 # running
|
|
fi
|
|
|
|
log "⚠️ $name is DOWN (status=$status) — restarting..."
|
|
|
|
# Remove if exists (stopped/crashed)
|
|
$DOCKER rm -f "$name" 2>/dev/null || true
|
|
|
|
# Determine run args based on container
|
|
case "$name" in
|
|
falah-auto-healer)
|
|
$DOCKER run -d --name "$name" --restart unless-stopped \
|
|
--network host \
|
|
-v /var/run/docker.sock:/var/run/docker.sock:ro \
|
|
-v /var/log/falah:/var/log/falah \
|
|
-v /var/state/falah:/var/state/falah \
|
|
-e CONTAINER_NAME=falah-mobile-staging \
|
|
-e HEALTH_URL=http://localhost:4014/mobile/api/health \
|
|
-e GATEWAY_URL=http://localhost:7878/mobile/api/health \
|
|
-e CHECK_INTERVAL=30 \
|
|
-e MAX_RESTARTS_PER_HOUR=3 \
|
|
-e ROLLBACK_IMAGE=falah-mobile:rollback \
|
|
"$image" >> "$LOG" 2>&1
|
|
;;
|
|
falah-dns-healer)
|
|
$DOCKER run -d --name "$name" --restart unless-stopped \
|
|
--network host \
|
|
-v /var/run/docker.sock:/var/run/docker.sock:ro \
|
|
-v /var/log/falah:/var/log/falah \
|
|
-e DOMAINS="falahos.my api.falahos.my git.falahos.my app.falahos.my" \
|
|
-e DIRECT_HEALTH="http://localhost:4014/mobile/api/health" \
|
|
-e GATEWAY_URL="http://localhost:7878/mobile/api/health" \
|
|
-e TUNNEL_PRIMARY="cloudflare-YT01" \
|
|
-e TUNNEL_FALLBACK="falah-tunnel" \
|
|
-e CHECK_INTERVAL=60 \
|
|
"$image" >> "$LOG" 2>&1
|
|
;;
|
|
*)
|
|
log "❌ Unknown container: $name"
|
|
return 1
|
|
;;
|
|
esac
|
|
|
|
sleep 3
|
|
if $DOCKER ps --filter "name=$name" --format '{{.Status}}' | grep -q "^Up"; then
|
|
log "✅ $name restarted successfully"
|
|
return 0
|
|
else
|
|
log "❌ $name failed to start"
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
# ── Main ─────────────────────────────────────────────────────
|
|
|
|
log "══════════════════════════════════════════════════════"
|
|
log "🔍 Watchdog check starting..."
|
|
|
|
APP_OK=false
|
|
DNS_OK=false
|
|
|
|
if check_and_restart "falah-auto-healer" "falah-auto-healer:v6"; then
|
|
APP_OK=true
|
|
fi
|
|
|
|
if check_and_restart "falah-dns-healer" "falah-dns-healer:latest"; then
|
|
DNS_OK=true
|
|
fi
|
|
|
|
if $APP_OK && $DNS_OK; then
|
|
log "✅ Both healers running"
|
|
elif $APP_OK || $DNS_OK; then
|
|
log "⚠️ One healer restored, other still down"
|
|
else
|
|
log "❌ CRITICAL: Both healers down and could not be restored!"
|
|
fi
|
|
|
|
# Also verify the app itself is running
|
|
APP_STATUS=$($DOCKER ps --filter name=falah-mobile-staging --format '{{.Status}}' 2>/dev/null)
|
|
if ! echo "$APP_STATUS" | grep -q "^Up"; then
|
|
log "⚠️ App container not running — cannot auto-fix from watchdog"
|
|
log " (app healer should handle this once restarted)"
|
|
fi
|
|
|
|
log "══════════════════════════════════════════════════════"
|