Convert the monitor db vars to env vars

Author: maximopalopoli

grafana/provisioning/datasources/datasource.yaml

@@ -54,14 +54,14 @@ datasources:
     jsonData:
       global_queries: []
 
-  - name: pg_auto_failover Monitor (host port)
+  - name: pg_auto_failover Monitor
     type: postgres
     uid: pgaf_monitor_host
     access: proxy
     orgId: 1
-    url: host.docker.internal:5436
-    database: pg_auto_failover
-    user: autoctl_node
+    url: "${MONITOR_DB_HOST}:${MONITOR_DB_PORT}"
+    database: MONITOR_DB_DB
+    user: MONITOR_DB_USER
     basicAuth: false
     isDefault: false
     editable: true

metrics-docker-compose.yaml

@@ -28,6 +28,10 @@ services:
       - POSTGRES_USER=postgres
       - POSTGRES_PASSWORD=postgres
       - PROMETHEUS_URL=http://prometheus:9090
+      - MONITOR_DB_HOST=host.docker.internal
+      - MONITOR_DB_PORT=5436
+      - MONITOR_DB_DB=pg_auto_failover
+      - MONITOR_DB_USER=autoctl_node
     extra_hosts:
       - "host.docker.internal:host-gateway"
     restart: unless-stopped