Add 'reverse-proxy' monitoring

Author: jpraynaud

mithril-infra/assets/docker/prometheus/targets.json

@@ -6,5 +6,13 @@
         "targets": [
             "node-exporter:9100"
         ]
+    },
+    {
+        "labels": {
+            "job": "reverse-proxy"
+        },
+        "targets": [
+            "reverse-proxy:8080"
+        ]
     }
 ]

mithril-infra/assets/docker/traefik/traefik.toml

@@ -18,8 +18,18 @@
   [entryPoints.websecure]
     address = ":443"
 
+  [entryPoints.metrics]
+    address = ":8080"
+
 [certificatesResolvers.lets-encrypt.acme]
   storage = "/etc/traefik/acme.json"
   email = "[email protected]"
   [certificatesResolvers.lets-encrypt.acme.tlsChallenge]
 
+[metrics]
+  [metrics.prometheus]
+    entryPoint = "metrics"
+    addEntryPointsLabels = true
+    addRoutersLabels = true
+    addServicesLabels = true
+