API Cluster

The api-cluster kit defines the following services:

• ui
• api1
• api2
• apilb
• mongodb
• elasticsearch

This kit differs from the quickstart in how it handles API requests. Requests are sent to the apilb container which runs a load balancer, distributing work between api1 and api2.

It is worth reviewing the cluster settings for both of your api servers in order for them to correctly communicate.

Running

Use the following commands:

docker-compose build --force-rm
docker-compose up

And then open a browser to:

http://localhost

To access the load balancer:

https://localhost:8080

To acess either api server directly:

https://localhost:6301
https://localhost:6302

docker-compose.yml

version: "2"

services:

  ui:
    build: ./ui
    networks:
      - cloudcms
    depends_on:
      - apilb
    env_file:
      - ./ui/ui.env
    ports:
      - "80:80"

  apilb:
    build: ./apilb
    networks:
      - cloudcms
    depends_on:
      - api1
      - api2
    ports:
      - "8080:8080"
      - "8085:8085"
    expose:
      - "8080"
    
  api1:
    build: ./api1
    networks:
      - cloudcms
    depends_on:
      - mongodb
      - elasticsearch
    env_file:
      - ./api1/api1.env
    ports:
      - "8091:8080"
    expose:
      - "8080"
      - "6301"

  api2:
    build: ./api2
    networks:
      - cloudcms
    depends_on:
      - mongodb
      - elasticsearch
    env_file:
      - ./api2/api2.env
    ports:
      - "8092:8080"
    expose:
      - "8080"
      - "6302"

  mongodb:
    build: ./mongodb
    networks:
      - cloudcms
    ports:
      - "27017:27017"
    expose:
      - "27017"
    command: mongod --config /etc/mongod.conf

  elasticsearch:
    build: ./elasticsearch
    networks:
      - cloudcms
    env_file:
      - ./elasticsearch/elasticsearch.env
    ulimits:
      memlock:
        soft: -1
        hard: -1
    ports:
      - "9300:9300"
      - "9200:9200"

networks:
  cloudcms:
    driver: bridge