openvidu-pro: Add to metricbeat the ability to monitor docker containers

openvidu-server/deployments/pro/docker-compose/media-node/beats/metricbeat-elasticsearch.yml

@@ -1,4 +1,18 @@
 metricbeat.modules:
+  - module: docker
+    metricsets:
+      - "container"
+      - "cpu"
+      - "diskio"
+      - "event"
+      - "healthcheck"
+      - "info"
+      - "image"
+      - "memory"
+      - "network"
+    hosts: ["unix:///var/run/docker.sock"]
+    period: ${OPENVIDU_PRO_STATS_MONITORING_INTERVAL}s
+    enabled: true
   - module: system
     metricsets:
       - cpu

openvidu-server/deployments/pro/docker-compose/openvidu-server-pro/beats/metricbeat.yml

@@ -1,11 +1,25 @@
 metricbeat.modules:
-- module: nginx
+  - module: docker
+    metricsets:
+      - "container"
+      - "cpu"
+      - "diskio"
+      - "event"
+      - "healthcheck"
+      - "info"
+      - "image"
+      - "memory"
+      - "network"
+    hosts: ["unix:///var/run/docker.sock"]
+    period: ${OPENVIDU_PRO_STATS_MONITORING_INTERVAL}s
+    enabled: true
+  - module: nginx
     metricsets: ["stubstatus"]
     enabled: true
-  period: 10s
+    period: ${OPENVIDU_PRO_STATS_MONITORING_INTERVAL}s
     hosts: ["http://127.0.0.1"]
     server_status_path: "nginx_status"
-- module: system
+  - module: system
     metricsets:
       - cpu
       - diskio

openvidu-server/deployments/pro/docker-compose/openvidu-server-pro/docker-compose.yml

@@ -143,12 +143,14 @@ services:
         image: docker.elastic.co/beats/metricbeat-oss:7.8.0
         network_mode: host
         restart: always
+        user: root
         env_file:
             - .env
         environment:
             - OPENVIDU_PRO_ELASTICSEARCH_HOST=${OPENVIDU_PRO_ELASTICSEARCH_HOST:-http://127.0.0.1:9200}
             - OPENVIDU_PRO_STATS_MONITORING_INTERVAL=${OPENVIDU_PRO_STATS_MONITORING_INTERVAL:-10}
         volumes:
+            - /var/run/docker.sock:/var/run/docker.sock
             - ./beats/metricbeat.yml:/usr/share/metricbeat/metricbeat.yml:ro
             - /proc:/hostfs/proc:ro
             - /sys/fs/cgroup:/hostfs/sys/fs/cgroup:ro