fix(monitoring): fix postgres-exporter credentials, cadvisor docker labels, node-exporter pid host

monitoring/docker-compose.monitoring.yml

@@ -46,6 +46,7 @@ services:
     image: prom/node-exporter:latest
     container_name: memento-node-exporter
     restart: unless-stopped
+    pid: host
     volumes:
       - /proc:/host/proc:ro
       - /sys:/host/sys:ro
@@ -54,17 +55,21 @@ services:
       - '--path.procfs=/host/proc'
       - '--path.sysfs=/host/sys'
       - '--path.rootfs=/rootfs'
+      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
     ports:
       - "9100:9100"
     networks:
       - memento-monitoring
+      - memento-net
 
   postgres-exporter:
     image: prometheuscommunity/postgres-exporter:latest
     container_name: memento-postgres-exporter
     restart: unless-stopped
+    env_file:
+      - /opt/memento/.env.docker
     environment:
-      DATA_SOURCE_NAME: "postgresql://${POSTGRES_USER:-memento}:${POSTGRES_PASSWORD}@memento-postgres:5432/${POSTGRES_DB:-memento}?sslmode=disable"
+      DATA_SOURCE_NAME: "postgresql://${POSTGRES_USER:-memento}:${POSTGRES_PASSWORD:-memento}@memento-postgres:5432/${POSTGRES_DB:-memento}?sslmode=disable"
     ports:
       - "9187:9187"
     networks:
@@ -87,15 +92,20 @@ services:
     image: gcr.io/cadvisor/cadvisor:latest
     container_name: memento-cadvisor
     restart: unless-stopped
+    privileged: true
+    command:
+      - '--docker_only=true'
     volumes:
       - /:/rootfs:ro
-      - /var/run:/var/run:ro
+      - /var/run:/var/run:rw
+      - /var/run/docker.sock:/var/run/docker.sock:ro
       - /sys:/sys:ro
       - /var/lib/docker/:/var/lib/docker:ro
     ports:
       - "8081:8080"
     networks:
       - memento-monitoring
+      - memento-net
 
   alertmanager-bridge:
     image: alpine:latest