docker-compose-example.yml

version: '2.2'
volumes:
  ldb:
services:

    # sidecar exposes the reader API over HTTP
    sidecar:
      build:
        context: .
        dockerfile: Dockerfile
      ports:
        - "1331"
      restart: always
      entrypoint:
        - /usr/local/bin/ctlstore
        - sidecar
      volumes:
        - ldb:/var/spool/ctlstore

    # heartbeat sends a constant stream of mutations into the executive
    heartbeat:
      restart: always
      build:
        context: .
        dockerfile: Dockerfile
      entrypoint:
      - /usr/local/bin/ctlstore
      - heartbeat
      - -executive-url
      - executive:3000
      - -heartbeat-interval
      - 1s
      - -family-name
      - ctlstore
      - -table-name
      - heartbeats
      - -writer-name
      - heartbeat
      - -writer-secret
      - heartbeat

  # supervisor periodically snapshots ldb
    supervisor:
      restart: always
      build:
        context: .
        dockerfile: Dockerfile
      entrypoint:
      - /usr/local/bin/ctlstore
      - supervisor
      - -snapshot-url
      - "file:///snapshots/snapshot.db"
      - -snapshot-interval
      - "60s"
      - -reflector.ldb-path
      - /data/supervisor-ldb.db
      - -reflector.upstream-driver
      - mysql
      - -reflector.upstream-dsn
      - ctldb:ctldbpw@tcp(mysql:3306)/ctldb?collation=utf8mb4_unicode_ci
      volumes:
      - ldb:/var/spool/ctlstore

    # reflector pulls changes from mysql to a ldb
    reflector:
      restart: always
      build:
        context: .
        dockerfile: Dockerfile
      ports:
        - 9090:9090
      entrypoint:
        - /usr/local/bin/ctlstore
        - reflector
        - -ldb-path
        - /var/spool/ctlstore/ldb.db
        - -changelog-path
        - /var/spool/ctlstore/changelog
        - -changelog-size
        - "1000000"
        - -upstream-driver
        - mysql
        - -upstream-dsn
        - ctldb:ctldbpw@tcp(mysql:3306)/ctldb?collation=utf8mb4_unicode_ci
        - -ledger-latency.disable # no ECS in a docker-compose environment
        - -metrics-bind
        - 0.0.0.0:9090
      volumes:
        - ldb:/var/spool/ctlstore

    # executive guards the mysqldb
    executive:
      restart: always
      build:
        context: .
        dockerfile: Dockerfile
      entrypoint:
        - /usr/local/bin/ctlstore
        - executive
        - -bind
        - 0.0.0.0:3000
        - -ctldb
        - ctldb:ctldbpw@tcp(mysql:3306)/ctldb?collation=utf8mb4_unicode_ci

    # mysql represents the upstream db
    mysql:
        build:
          context: .
          dockerfile: Dockerfile-mysql
        restart:
            always
        environment:
            MYSQL_ROOT_PASSWORD: ctldbpw
            MYSQL_DATABASE: ctldb
            MYSQL_USER: ctldb
            MYSQL_PASSWORD: ctldbpw
        mem_limit: 536870912