Prometheus, Grafana, blackbox_exporter

monitoring/prometheus.yml

@@ -0,0 +1,25 @@
+global:
+  scrape_interval: 15s
+
+scrape_configs:
+  # 1. Scraping deines Node.js Email-Workers
+  - job_name: 'email-worker'
+    static_configs:
+      - targets: ['host.docker.internal:9000']
+
+  # 2. Port-Überwachung deines Mailservers (IMAP 993 & POP3 995)
+  - job_name: 'mailserver_ports'
+    metrics_path: /probe
+    params:
+      module: [tcp_connect] # Prüft nur, ob der TCP-Port offen ist
+    static_configs:
+      - targets:
+        - host.docker.internal:993 # IMAPS
+        - host.docker.internal:995 # POP3S
+    relabel_configs:
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: instance
+      - target_label: __address__
+        replacement: blackbox_exporter:9115 # Der Exporter führt den Check aus