diff --git a/bundles/c3voc-addons/metadata.py b/bundles/c3voc-addons/metadata.py
new file mode 100644
index 0000000..279cdaf
--- /dev/null
+++ b/bundles/c3voc-addons/metadata.py
@@ -0,0 +1,43 @@
+defaults = {
+    'icinga2_api': {
+        'nginx': {
+            'services': {
+                'NGINX PROCESS': {
+                    'command_on_monitored_host': '/usr/local/share/icinga/plugins/check_systemd_unit nginx',
+                },
+            },
+        },
+    },
+}
+
+
+@metadata_reactor.provides(
+    'icinga2_api/nginx/services',
+)
+def monitoring(metadata):
+    services = {}
+
+    for vname, vconfig in metadata.get('nginx/vhosts', {}).items():
+        domain = vconfig.get('domain', vname)
+
+        if 'website_check_path' in vconfig and 'website_check_string' in vconfig:
+            services['NGINX VHOST {} CONTENT'.format(vname)] = {
+                'check_command': 'check_http_wget',
+                'vars.http_wget_contains': vconfig['website_check_string'],
+                'vars.http_wget_url': 'https://{}{}'.format(domain, vconfig['website_check_path']),
+            }
+
+        if vconfig.get('check_ssl', True):
+            services['NGINX VHOST {} CERTIFICATE'.format(vname)] = {
+                'check_command': 'check_https_cert_at_url',
+                'vars.domain': domain,
+                'vars.notification.mail': True,
+            }
+
+    return {
+        'icinga2_api': {
+            'nginx': {
+                'services': services,
+            },
+        },
+    }
diff --git a/nodes/voc/pretalx.py b/nodes/voc/pretalx.py
index 84d180b..49100ef 100644
--- a/nodes/voc/pretalx.py
+++ b/nodes/voc/pretalx.py
@@ -32,6 +32,8 @@ nodes['voc.pretalx'] = {
                         },
                     },
                     'extras': True,
+                    'website_check_path': '/orga/login/',
+                    'website_check_string': 'Sign in :: pretalx',
                 },
             },
         },