docker-compose-opensearch-only.yml

# WARNING to run this you need to ensure that vm.max_map_count is correctly configured
# See https://opensearch.org/docs/latest/install-and-configure/install-opensearch/docker#important-host-settings
# We recommande having at least 40Gb free space on your disk to prevent this error : https://stackoverflow.com/a/67767478
#   If you have less and something goes wrong at the cluster boot check that you don't have any logs "high disk watermark [90%] exceeded"
#   if so make some free space a few Gb until this error desapear.
version: '3'

services:

  opensearch-node1:
    image: "${PLATFORM}opensearchproject/opensearch:${OPENSEARCH}"
    environment:
      - cluster.name=opensearch-cluster
      - node.name=opensearch-node1
      - discovery.seed_hosts=opensearch-node1,opensearch-node2
      - cluster.initial_cluster_manager_nodes=opensearch-node1,opensearch-node2
      - 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:
      - opensearch-data1:/usr/share/opensearch/data
    ports:
      - 9200:9200
      - 9600:9600 # required for Performance Analyzer
    networks:
      - opensearch-net

  opensearch-node2:
    image: "${PLATFORM}opensearchproject/opensearch:${OPENSEARCH}"
    environment:
      - cluster.name=opensearch-cluster
      - node.name=opensearch-node2
      - discovery.seed_hosts=opensearch-node1,opensearch-node2
      - cluster.initial_cluster_manager_nodes=opensearch-node1,opensearch-node2
      - bootstrap.memory_lock=true
      - "OPENSEARCH_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    volumes:
      - opensearch-data2:/usr/share/opensearch/data
    networks:
      - opensearch-net

  opensearch-dashboards:
    image: "${PLATFORM}opensearchproject/opensearch-dashboards:${OPENSEARCH}"
    ports:
      - 5601:5601
    expose:
      - "5601"
    environment:
      OPENSEARCH_HOSTS: '["https://opensearch-node1:9200","https://opensearch-node2:9200"]'
    networks:
      - opensearch-net

volumes:
  opensearch-data1:
  opensearch-data2:

networks:
  opensearch-net: