20-sep: watchdog Gitea (systemd) + fix monitor Kuma

vps/gitea/gitea_watchdog.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+# Vigilante de Gitea (VPS Contabo).
+# Si el contenedor no esta sano N veces seguidas, lo recrea desde /root/docker-compose.yml.
+# Los datos viven en el bind /root/gitea/data, por lo que recrear NO los toca.
+set -u
+
+DOCKER=/usr/bin/docker
+COMPOSE_DIR=/root
+CONTAINER=gitea
+HEALTH_URL=http://127.0.0.1:3000/api/healthz
+LOG=/var/log/gitea-watchdog.log
+STATE_DIR=/var/lib/gitea-watchdog
+STATE=$STATE_DIR/fails
+MAX_FAILS=2
+
+mkdir -p "$STATE_DIR"
+touch "$STATE"
+
+log() { echo "$(date '+%F %T') $*" >> "$LOG"; }
+
+# Rotar log si crece demasiado (1 MB)
+if [ -f "$LOG" ] && [ "$(stat -c%s "$LOG" 2>/dev/null || echo 0)" -gt 1048576 ]; then
+    mv -f "$LOG" "$LOG.1"
+fi
+
+status=$("$DOCKER" inspect "$CONTAINER" --format '{{.State.Status}}' 2>/dev/null || echo missing)
+
+healthy=0
+if [ "$status" = "running" ]; then
+    body=$("$DOCKER" exec "$CONTAINER" wget -qO- --timeout=8 "$HEALTH_URL" 2>/dev/null || true)
+    if echo "$body" | grep -q '"status": *"pass"'; then
+        healthy=1
+    fi
+fi
+
+if [ "$healthy" = "1" ]; then
+    if [ "$(cat "$STATE" 2>/dev/null || echo 0)" != "0" ]; then
+        log "Gitea vuelve a estar OK (status=$status)."
+    fi
+    echo 0 > "$STATE"
+    exit 0
+fi
+
+fails=$(cat "$STATE" 2>/dev/null || echo 0)
+case "$fails" in ''|*[!0-9]*) fails=0 ;; esac
+fails=$((fails + 1))
+echo "$fails" > "$STATE"
+log "Gitea NO saludable (status=$status, fallo $fails/$MAX_FAILS)."
+
+if [ "$fails" -ge "$MAX_FAILS" ]; then
+    log "Recreando contenedor '$CONTAINER' desde $COMPOSE_DIR ..."
+    cd "$COMPOSE_DIR" || { log "ERROR: no existe $COMPOSE_DIR"; exit 1; }
+    if "$DOCKER" compose version >/dev/null 2>&1; then
+        "$DOCKER" compose up -d --force-recreate --no-deps "$CONTAINER" >> "$LOG" 2>&1
+    else
+        docker-compose up -d --force-recreate --no-deps "$CONTAINER" >> "$LOG" 2>&1
+    fi
+    log "Recreacion lanzada (exit=$?)."
+    echo 0 > "$STATE"
+fi