Prometheus metrics for authentik.

services/authentik.hcl

@@ -9,6 +9,9 @@ job "authentik" {
       port "https" {
         to = 9443
       }
+      port "metrics" {
+        to = 9300
+      }
     }
 
     task "server" {
@@ -18,7 +21,8 @@ job "authentik" {
         image = "ghcr.io/goauthentik/server:2023.6.1"
         ports = [
           "http",
-          "https"
+          "https",
+          "metrics"
         ]
         command = "server"
       }
@@ -47,6 +51,11 @@ job "authentik" {
           "traefik.http.routers.authentik.entryPoints=websecure",
         ]
       }
+      service {
+        name = "authentik-metrics"
+        port = "metrics"
+        tags = [ "metrics" ]
+      }
     }
 
     task "worker" {