Adds a couchbase module for metricbeat (elastic#3081)

CHANGELOG.asciidoc

@@ -53,6 +53,7 @@ https://github.com/elastic/beats/compare/v5.1.1...master[Check the HEAD diff]
 
 *Metricbeat*
 - Kafka module broker matching enhancements. {pull}3129[3129]
+- Add a couchbase module with metricsets for node, cluster and bucker. {pull}3081[3081]
 
 
 *Packetbeat*

metricbeat/_meta/beat.full.yml

@@ -67,6 +67,13 @@ metricbeat.modules:
   # Password of hosts. Empty by default
   #password: test123
 
+#------------------------------ couchbase Module -----------------------------
+#- module: couchbase
+  #metricsets: ["cluster", "node", "bucket"]
+  #enabled: true
+  #period: 10s
+  #hosts: ["localhost:8091"]
+
 #------------------------------- Docker Module -------------------------------
 #- module: docker
   #metricsets: ["cpu", "info", "memory", "network", "diskio", "container"]

metricbeat/docker-compose.yml

@@ -4,6 +4,7 @@ services:
     build: ${PWD}/.
     links:
       - apache
+      - couchbase
       - mongodb
       - kafka
       - mysql
@@ -15,6 +16,9 @@ services:
     environment:
       - APACHE_HOST=apache
       - APACHE_PORT=80
+      - COUCHBASE_HOST=couchbase
+      - COUCHBASE_PORT=8091
+      - COUCHBASE_DSN=http://Administrator:password@couchbase:8091
       - KAFKA_HOST=kafka
       - KAFKA_PORT=9092
       - NGINX_HOST=nginx
@@ -50,6 +54,9 @@ services:
   apache:
     build: ${PWD}/module/apache/_meta
 
+  couchbase:
+    build: ${PWD}/module/couchbase/_meta
+
   kafka:
     image: spotify/kafka
     expose:
@@ -80,5 +87,3 @@ services:
 
   zookeeper:
     image: jplock/zookeeper:3.4.8
-
-

metricbeat/docker-entrypoint.sh

@@ -23,6 +23,7 @@ waitFor() {
 
 # Main
 waitFor ${APACHE_HOST} ${APACHE_PORT} Apache
+waitFor ${COUCHBASE_HOST} ${COUCHBASE_PORT} Couchbase
 waitFor ${HAPROXY_HOST} ${HAPROXY_PORT} HAProxy
 waitFor ${KAFKA_HOST} ${KAFKA_PORT} Kafka
 waitFor ${MYSQL_HOST} ${MYSQL_PORT} MySQL