add elasticsearch_exporter to docker-compose.metrics.yml and prometheus.yml files

docker-compose.metrics.yml

@@ -75,6 +75,6 @@ services:
       - '--es.uri=http://db_elasticsearch:9200'
     restart: always
     ports:
-      - "9114:9114"
+      - "9210:9114"
     depends_on:
       - db_elasticsearch

docker/prometheus/prometheus.consul.yml.j2

@@ -221,3 +221,11 @@ scrape_configs:
       - source_labels: ['__meta_consul_node']
         target_label: instance
       metrics_path: /used-memory/
+
+    - job_name: 'elastic search exporter'
+      consul_sd_configs:
+      - server: 'consul.service.nyc1.consul:8500'
+        services: ['elasticsearch_exporter']
+      relabel_configs:
+      - source_labels: ['__meta_consul_node']
+        target_label: instance

docker/prometheus/prometheus.docker.yml

@@ -213,5 +213,12 @@ scrape_configs:
         - targets: ['flask_metrics_redis:5569']
       metrics_path: /used-memory/
       scheme: http
+      tls_config:
+        insecure_skip_verify: true
+
+    - job_name: 'elastic search exporter'
+      static_configs:
+        - targets: ['elasticsearch_exporter:9114']
+      scheme: http
       tls_config:
         insecure_skip_verify: true