version: '3.3'

services:
  primary:
    hostname: 'primary'
    image: crunchydata/crunchy-postgres:centos7-10.3-1.8.2
    secrets:
      - postgres_primary
      - postgres_password
      - postgres_rootpw
    environment:
      - PGHOST=/tmp
      - MAX_CONNECTIONS=10
      - MAX_WAL_SENDERS=5
      - PG_MODE=primary
      - PG_PRIMARY_USER=primaryuser
      - PG_PRIMARY_PASSWORD=postgres_primary
      - PG_DATABASE=postgres_db
      - PG_USER=admin
      - PG_PASSWORD=postgres_password
      - PG_ROOT_PASSWORD=postgres_rootpw
      - PG_PRIMARY_PORT=5432
    volumes:
      - pg-primary-vol:/pgdata
    ports:
      - '5432'
    networks:
      - infra
    deploy:
      placement:
        constraints:
          - node.labels.type == primary
          - node.role == worker
  replica:
    image: crunchydata/crunchy-postgres:centos7-10.3-1.8.2
    secrets:
      - postgres_primary
      - postgres_password
      - postgres_rootpw
    environment:
      - PGHOST=/tmp
      - MAX_CONNECTIONS=10
      - MAX_WAL_SENDERS=5
      - PG_MODE=replica
      - PG_PRIMARY_HOST=primary
      - PG_PRIMARY_PORT=5432
      - PG_PRIMARY_USER=primaryuser
      - PG_PRIMARY_PASSWORD=postgres_primary
      - PG_DATABASE=postgres_db
      - PG_USER=admin
      - PG_PASSWORD=postgres_password
      - PG_ROOT_PASSWORD=postgres_rootpw
    volumes:
      - pg-replica-vol:/pgdata
    ports:
      - '5432'
    networks:
      - infra
    deploy:
      placement:
        constraints:
          - node.labels.type != primary
          - node.role == worker
networks:
  infra:

volumes:
  pg-primary-vol:
  pg-replica-vol:

secrets:
  postgres_primary:
    external: true
  postgres_password:
    external: true
  postgres_rootpw:
    external: true