version: '3.5'

# will contain all elasticsearch data.
volumes:
  elasticsearch-data-1:
  elasticsearch-data-2:

services:
  elasticsearch-1:
    image: elastdocker/elasticsearch:${ELK_VERSION}
    build:
      context: elasticsearch/
      args:
        ELK_VERSION: ${ELK_VERSION}
    restart: unless-stopped
    environment:
      ELASTIC_USERNAME: ${ELASTIC_USERNAME}
      ELASTIC_PASSWORD: ${ELASTIC_PASSWORD}
      ELASTIC_CLUSTER_NAME: ${ELASTIC_CLUSTER_NAME}
      ELASTIC_NODE_NAME: ${ELASTIC_NODE_NAME_1}
      ELASTIC_INIT_MASTER_NODE: ${ELASTIC_INIT_MASTER_NODE}
      ELASTIC_DISCOVERY_SEEDS: ${ELASTIC_DISCOVERY_SEEDS}
      ELASTICSEARCH_PORT: ${ELASTICSEARCH_PORT}
      ES_JAVA_OPTS: -Xmx${ELASTICSEARCH_HEAP} -Xms${ELASTICSEARCH_HEAP} -Des.enforce.bootstrap.checks=true
      bootstrap.memory_lock: "true"
    volumes:
      - elasticsearch-data-1:/usr/share/elasticsearch/data
      - ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - ./elasticsearch/config/log4j2.properties:/usr/share/elasticsearch/config/log4j2.properties
    secrets:
      - source: elasticsearch.keystore
        target: /usr/share/elasticsearch/config/elasticsearch.keystore
      - source: elastic.ca
        target: /usr/share/elasticsearch/config/certs/ca.crt
      - source: elasticsearch.certificate
        target: /usr/share/elasticsearch/config/certs/elasticsearch.crt
      - source: elasticsearch.key
        target: /usr/share/elasticsearch/config/certs/elasticsearch.key
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 200000
        hard: 200000
  elasticsearch-2:
    image: elastdocker/elasticsearch:${ELK_VERSION}
    build:
      context: elasticsearch/
      args:
        ELK_VERSION: ${ELK_VERSION}
    restart: unless-stopped
    environment:
      ELASTIC_USERNAME: ${ELASTIC_USERNAME}
      ELASTIC_PASSWORD: ${ELASTIC_PASSWORD}
      ELASTIC_CLUSTER_NAME: ${ELASTIC_CLUSTER_NAME}
      ELASTIC_NODE_NAME: ${ELASTIC_NODE_NAME_2}
      ELASTIC_INIT_MASTER_NODE: ${ELASTIC_INIT_MASTER_NODE}
      ELASTIC_DISCOVERY_SEEDS: ${ELASTIC_DISCOVERY_SEEDS}
      ELASTICSEARCH_PORT: ${ELASTICSEARCH_PORT}
      ES_JAVA_OPTS: -Xmx${ELASTICSEARCH_HEAP} -Xms${ELASTICSEARCH_HEAP} -Des.enforce.bootstrap.checks=true
      bootstrap.memory_lock: "true"
    volumes:
      - elasticsearch-data-2:/usr/share/elasticsearch/data
      - ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
      - ./elasticsearch/config/log4j2.properties:/usr/share/elasticsearch/config/log4j2.properties
    secrets:
      - source: elasticsearch.keystore
        target: /usr/share/elasticsearch/config/elasticsearch.keystore
      - source: elastic.ca
        target: /usr/share/elasticsearch/config/certs/ca.crt
      - source: elasticsearch.certificate
        target: /usr/share/elasticsearch/config/certs/elasticsearch.crt
      - source: elasticsearch.key
        target: /usr/share/elasticsearch/config/certs/elasticsearch.key
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 200000
        hard: 200000