# Creates 2 single node Opensearch cluster(one leader and one follower). Leader cluster is used for ingesting the data which is then
# replicated  to the follower cluster.
version: '3'
services:
  leader-cluster:
    image: opensearchproject/opensearch:latest
    container_name: leader-cluster
    environment:
      - cluster.name=leader-cluster
      - node.name=leader-node
      - discovery.seed_hosts=leader-node
      - cluster.initial_master_nodes=leader-node
      - bootstrap.memory_lock=true # along with the memlock settings below, disables swapping
      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m" # minimum and maximum Java heap size, recommend setting both to 50% of system RAM
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536 # maximum number of open files for the OpenSearch user, set to at least 65536 on modern systems
        hard: 65536
    volumes:
      - leader-node-volume:/usr/share/opensearch/data
    ports:
      - 9200:9200
      - 9300:9300 # required for Performance Analyzer
    networks:
      - opensearch-net
  follower-cluster:
    image: opensearchproject/opensearch:latest
    container_name: follower-cluster
    environment:
      - cluster.name=follower-cluster
      - node.name=follower-node
      - discovery.seed_hosts=follower-node
      - cluster.initial_master_nodes=follower-node
      - bootstrap.memory_lock=true # along with the memlock settings below, disables swapping
      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m" # minimum and maximum Java heap size, recommend setting both to 50% of system RAM
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536 # maximum number of open files for the OpenSearch user, set to at least 65536 on modern systems
        hard: 65536
    volumes:
      - follower-node-volume:/usr/share/opensearch/data
    ports:
      - 9201:9200
      - 9301:9300 # required for Performance Analyzer
    networks:
      - opensearch-net

volumes:
  leader-node-volume:
  follower-node-volume:

networks:
  opensearch-net: