services:
  postgres:
    image: postgres:14.8-alpine
    restart: always
    environment:
      - POSTGRES_HOST_AUTH_METHOD=trust
      - POSTGRES_USERNAME=postgres
      - POSTGRES_PASSWORD=

  pgpool:
    image: pgpool/pgpool:4.4.2
    #image: pgpool:4.4.stable
    #build: pgpool
    restart: always
    ports:
      - 5432:9999
    environment:
      - PGPOOL_PARAMS_BACKEND_HOSTNAME0=postgres
      - POSTGRES_USERNAME=postgres
      - POSTGRES_PASSWORD=
      - PGPOOL_PARAMS_SR_CHECK_USER=postgres
      - PGPOOL_PARAMS_SR_CHECK_PASSWORD=
      - PGPOOL_PARAMS_RELCACHE_EXPIRE=1 # makes it much easier to trigger issues
      #- PGPOOL_PARAMS_ENABLE_SHARED_RELCACHE=off