Add Prometheus, Grafana and Targets

coreos-config/roles/compose_project/templates/matrix/docker-compose.yaml

@@ -33,16 +33,17 @@ services:
       - gateway
       - backend
     labels:
-      # FIXME: /_synapse/admin is exposed.
       - "traefik.enable=true"
       - "traefik.http.routers.http-synapse.rule=Host(`synapse.{{ matrix.baseurl }}`)"
       - "traefik.http.routers.http-synapse.entryPoints=websecure"
       - "traefik.http.routers.http-synapse.service=matrix-synapse"
-
       - "traefik.http.routers.matrix-synapse.rule=Host(`{{ matrix.baseurl }}`) && PathPrefix(`/_{path:(matrix|synapse)}/`)"
       - "traefik.http.routers.matrix-synapse.entryPoints=websecure"
       - "traefik.http.routers.matrix-synapse.service=matrix-synapse"
       - "traefik.http.services.matrix-synapse.loadbalancer.server.port=8008"
+      - "prometheus-scrape.enabled=true"
+      - "prometheus-scrape.port=9091"
+      - "prometheus-scrape.metrics_path=/_synapse/metrics"
 
   db:
     image: postgres:15

coreos-config/roles/compose_project/templates/matrix/synapse-config/homeserver.yaml

@@ -11,6 +11,7 @@
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html
 server_name: "{{ matrix.baseurl }}"
 pid_file: /data/homeserver.pid
+enable_metrics: true
 listeners:
   - port: 8008
     tls: false
@@ -19,6 +20,9 @@ listeners:
     resources:
       - names: [client, federation]
         compress: false
+  - port: 9091
+    tls: false
+    type: metrics
 database:
   name: psycopg2
   args: