bundles/icinga2: add icinga statusmonitor

bundles/icinga2/files/icinga_statusmonitor.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+from flask import Flask, Response
+from subprocess import check_output
+
+app = Flask(__name__)
+
+@app.route('/status')
+def statuspage():
+    try:
+        check_output(['/usr/lib/nagios/plugins/check_procs', '-C', 'icinga2', '-c', '1:'])
+
+        # check_output will raise an exception if there is a non-zero status
+        icinga_is_fine = True
+    except:
+        icinga_is_fine = False
+
+    try:
+        check_output(['/usr/lib/nagios/plugins/check_procs', '-C', 'postgres', '-c', '1:'])
+
+        # check_output will raise an exception if there is a non-zero status
+        postgres_is_fine = True
+    except:
+        postgres_is_fine = False
+
+    if icinga_is_fine and postgres_is_fine:
+        return 'OK', 200
+    else:
+        return 'Something is wrong!', 500

bundles/icinga2/files/icinga_statusmonitor.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=Icinga2 Statusmonitor
+After=network.target
+
+[Service]
+User=nagios
+Group=nagios
+Environment="FLASK_APP=/etc/icinga2/icinga_statusmonitor.py"
+ExecStart=/usr/bin/python3 -m flask run
+WorkingDirectory=/tmp
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target