setup fluentd prometheus exporter

dockerfiles/services/prometheus/docker-compose-prod.yml

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+---
+# docker-compose file for prometheus metrics server
+
+# docker login dkregistry.xai-corp.net:5000
+# docker-compose build && docker push dkregistry.xai-corp.net:5000/xaicorp/prometheus:latest
+
+# DOCKER_HOST=dkmanager:2376 docker stack deploy -c docker-compose.yml metrics
+# DOCKER_HOST=dkmanager:2376 docker stack ps metrics
+
+version: '3.4'
+services:
+
+  prometheus:
+    image: "dkregistry.xai-corp.net:5000/xaicorp/prometheus:latest"
+    ports:
+      - 9090:9090
+#    logging:
+#      driver: fluentd
+#      options:
+#        fluentd-address: "logs.xai-corp.net:24224"
+#        fluentd-async-connect: 'true'
+#        tag: postgres
+    deploy:
+      mode: replicated
+      replicas: 1
+      restart_policy:
+        condition: any
+        delay: "1s"
+        max_attempts: 5
+      update_config:
+        parallelism: 1
+        delay: 2s
+        order: start-first
+      resources:
+        limits:
+#          cpus: '1'
+          memory: 512M
+    networks:
+    - ingress
+    - prod
+
+  graphana:
+    image: grafana/grafana
+    ports:
+      - 3001:3000
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: sakas
+#    volumes:
+#      - /opt/shared/nextcloud/data:/var/www/html/data
+    networks:
+    - ingress
+
+  postgres_exported:
+    image: wrouesnel/postgres_exporter
+    environment:
+      DATA_SOURCE_NAME: "postgresql://xaicorp_admin:snqioxni1sw@tasks.postgres:5432/?sslmode=disable"
+    deploy:
+      mode: replicated
+      replicas: 0
+      restart_policy:
+        condition: any
+        delay: "1s"
+        max_attempts: 5
+      update_config:
+        parallelism: 1
+        delay: 2s
+        order: start-first
+      resources:
+        limits:
+#          cpus: '1'
+          memory: 512M
+    networks:
+    - prod
+
+  fluentd_exporter:
+    image: vect0r/fluentd_exporter
+    ports:
+      - 9309:9309
+    command:
+      - go-wrapper
+      - run
+      - -scrape_uri
+      - http://tasks.fluentd:24220/api/plugins.json
+    deploy:
+      mode: replicated
+      replicas: 1
+      restart_policy:
+        condition: any
+        delay: "1s"
+        max_attempts: 5
+      update_config:
+        parallelism: 1
+        delay: 2s
+        order: start-first
+      resources:
+        limits:
+#          cpus: '1'
+          memory: 512M
+    networks:
+    - prod
+
+networks:
+  default:
+    external:
+      name: ingress
+  ingress:
+    external:
+      name: ingress
+  prod:
+    external:
+      name: prod