Docker Java application template with Nginx for load balancing, Tomcat application server, Solr for full-text search and Mongo as the underlying database. The service discovery is provided through DCHQ's plug-in framework. The service discovery framework in DCHQ provides event-driven life-cycle stages that executes custom scripts to re-configure…

Docker Java (Nginx-Tomcat-Solr-MySQL)

Nginx:
  image: nginx:latest
  publish_all: true
  mem_min: 50m
  host: host1
  plugins:
    - !plugin
      id: 0H1Nk
      restart: true
      lifecycle: on_create, post_scale_out:AppServer, post_scale_in:AppServer
      arguments:
        # Use container_private_ip if you're using Docker networking
        - servers=server {{AppServer | container_private_ip}}:8080;
        # Use container_hostname if you're using Weave networking
        #- servers=server {{AppServer | container_hostname}}:8080;
AppServer:
  image: tomcat:8.0.21-jre8
  mem_min: 600m
  host: host1
  cluster_size: 1
  environment:
    - database_driverClassName=com.mysql.jdbc.Driver
    - database_url=jdbc:mysql://{{MySQL|container_hostname}}:3306/{{MySQL|MYSQL_DATABASE}}
    - database_username={{MySQL|MYSQL_USER}}
    - database_password={{MySQL|MYSQL_ROOT_PASSWORD}}
    - solr_host={{Solr|container_private_ip}}
    - solr_port=8983
  plugins:
    - !plugin
      id: oncXN
      restart: true
      arguments:
        - file_url=https://github.com/dchqinc/dchq-docker-java-solr-mongo-cassandra-example/raw/master/dbconnect.war
        - dir=/usr/local/tomcat/webapps/ROOT.war
        - delete_dir=/usr/local/tomcat/webapps/ROOT
Solr:
  image: solr:latest
  mem_min: 300m
  host: host1
  publish_all: false
  plugins:
    - !plugin
      id: doX8s
      restart: true
      arguments:
        - file_url=https://github.com/dchqinc/dchq-docker-java-solr-mongo-cassandra-example/raw/master/names.zip
MySQL:
  image: mysql:latest
  host: host1
  mem_min: 400m
  environment:
    - MYSQL_USER=root
    - MYSQL_DATABASE=names
    - MYSQL_ROOT_PASSWORD={{alphanumeric|8}}