twat/docker-compose.yml

# version: "3.9"  # optional since v1.27.0

networks:
  spaceandtime:
    ipam:
      config:
        - subnet: 172.20.0.0/24 # static ip management required for cassandra web, as this does not work with docker dns

services:
  cass1:
    image: cassandra:4.0.4 # latest lts version as of 31.05.2022
    container_name: cass1
    hostname: cass1
    healthcheck:
        test: ["CMD", "cqlsh", "-e", "describe keyspaces" ]
        interval: 10s
        timeout: 10s
        start_period: 50s
        retries: 10
    networks:
      spaceandtime:
          ipv4_address: 172.20.0.6
    ports:
      - "9042:9042"
    volumes:
      - ./cqlsh:/root/.cassandra
      - ./startup:/tmp/startup
      - ./data/cass1:/var/lib/cassandra
      - ./etc/cass1:/etc/cassandra # currently not needed as this is configured with the below env variables
    environment: &environment
        MAX_HEAP_SIZE: 1024M
        HEAP_NEWSIZE: 1024M
        CASSANDRA_SEEDS: "cass1,cass2"
        CASSANDRA_CLUSTER_NAME: SolarSystem
        CASSANDRA_DC: Mars
        CASSANDRA_RACK: West
        CASSANDRA_ENDPOINT_SNITCH: GossipingPropertyFileSnitch
        CASSANDRA_NUM_TOKENS: 128
    restart: always
  
  cass2:
    image: cassandra:4.0.4 # latest lts version as of 31.05.2022
    container_name: cass2
    hostname: cass2
    healthcheck:
        test: ["CMD", "cqlsh", "-e", "describe keyspaces" ]
        interval: 10s
        timeout: 10s
        start_period: 50s
        retries: 10
    networks:
      spaceandtime:
          ipv4_address: 172.20.0.7
    ports:
      - "9043:9042"
    volumes:
      - ./cqlsh:/root/.cassandra
      - ./startup:/tmp/startup
      - ./data/cass2:/var/lib/cassandra
      - ./etc/cass2:/etc/cassandra
    environment: *environment
    depends_on:
      cass1:
        condition: service_healthy # service_healthy --> sometimes not working, alternativly restart always policy below
    restart: always
  
  cass3:
    image: cassandra:4.0.4 # latest lts version as of 31.05.2022
    container_name: cass3
    hostname: cass3
    healthcheck:
        test: ["CMD", "cqlsh", "-e", "describe keyspaces" ]
        interval: 10s
        timeout: 10s
        start_period: 50s
        retries: 10
    networks:
      spaceandtime:
          ipv4_address: 172.20.0.8
    ports:
      - "9044:9042"
    volumes:
      - ./cqlsh:/root/.cassandra
      - ./startup:/tmp/startup
      - ./data/cass3:/var/lib/cassandra
      - ./etc/cass3:/etc/cassandra
    environment: *environment
    depends_on:
      cass2:
        condition: service_healthy # service_healthy --> sometimes not working, alternativly restart always policy below
    restart: always

  cass_startup_client:
    image: cassandra:4.0.4 # latest lts version as of 31.05.2022
    container_name: cass_startup_client
    hostname: cass_startup_client
    networks:
      spaceandtime:
          ipv4_address: 172.20.0.11
    volumes:
      - ./cqlsh:/root/.cassandra
      - ./startup:/tmp/startup
      - ./data/cass_startup_client:/var/lib/cassandra
      - ./etc/cass_startup_client:/etc/cassandra
    environment: *environment
    depends_on:
      cass1:
        condition: service_healthy  # service_healthy --> sometimes not working, alternativly restart always policy below
      cass2:
        condition: service_healthy  # service_healthy --> sometimes not working, alternativly restart always policy below
      cass3:
        condition: service_healthy
    command: bash -c "/tmp/startup/setup/setup_db.sh && /tmp/startup/setup/setup_likedFrom.sh"

  cassweb:
    image: ruby:2.4.1 # latest stable version as of 31.05.2022
    container_name: cassweb
    hostname: cassweb
    command: bash -c "gem install cassandra-web && cassandra-web --hosts '172.20.0.6, 172.20.0.7, 172.20.0.8' --port '9042' --username 'cassandra' --password 'cassandra'"
    networks:
      spaceandtime:
          ipv4_address: 172.20.0.9
    ports:
      - "3000:3000"
    depends_on:
      cass1:
        condition: service_healthy # service_healthy --> sometimes not working, alternativly restart always policy below
      cass2:
        condition: service_healthy # service_healthy --> sometimes not working, alternativly restart always policy below
      cass3:
        condition: service_healthy # service_healthy --> sometimes not working, alternativly restart always policy below
      cass_startup_client:
        condition: service_started
    restart: always