# docker compose file for running a 3-node PostgreSQL cluster
# with 3-node etcd cluster as the DCS and one haproxy node
version: "2"

networks:
    demo:

services:
    etcd1:
        image: patronitraining/patroni
        networks: [ demo ]
        container_name: demo-etcd1
        hostname: etcd1
        command: etcd
        environment: &etcd_env
            ETCD_NAME: etcd1
            ETCD_INITIAL_ADVERTISE_PEER_URLS: http://etcd1:2380
            ETCD_INITIAL_CLUSTER: etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
            ETCD_INITIAL_CLUSTER_STATE: new
            ETCD_INITIAL_CLUSTER_TOKEN: tutorial
            ETCD_LISTEN_PEER_URLS: http://0.0.0.0:2380
            ETCD_LISTEN_CLIENT_URLS: http://0.0.0.0:2379

    etcd2:
        image: patronitraining/patroni
        networks: [ demo ]
        container_name: demo-etcd2
        hostname: etcd2
        command: etcd
        environment:
            <<: *etcd_env
            ETCD_NAME: etcd2
            ETCD_INITIAL_ADVERTISE_PEER_URLS: http://etcd2:2380

    etcd3:
        image: patronitraining/patroni
        networks: [ demo ]
        container_name: demo-etcd3
        hostname: etcd3
        command: etcd
        environment:
            <<: *etcd_env
            ETCD_NAME: etcd3
            ETCD_INITIAL_ADVERTISE_PEER_URLS: http://etcd3:2380

    haproxy:
        image: patronitraining/patroni
        networks: [ demo ]
        hostname: haproxy
        container_name: demo-haproxy
        ports:
            - "5000:5000"
            - "5001:5001"
        command: haproxy
        environment: &haproxy_env
            PATRONI_SCOPE: demo
            PATRONI_ETCD_HOSTS: "'etcd1:2379','etcd2:2379','etcd3:2379'"
            PATRONI_RESTAPI_USERNAME: admin
            PATRONI_RESTAPI_PASSWORD: admin
            ETCDCTL_ENDPOINTS: http://etcd1:2379,http://etcd2:2379,http://etcd3:2379

    patroni1:
        image: patronitraining/patroni
        networks: [ demo ]
        hostname: patroni1
        container_name: demo-patroni1
        environment: &patroni_env
            <<: *haproxy_env
            PATRONI_NAME: patroni1
            PATRONI_SUPERUSER_USERNAME: postgres
            PATRONI_SUPERUSER_PASSWORD: postgres
            PATRONI_REPLICATION_USERNAME: replicator
            PATRONI_REPLICATION_PASSWORD: replicate
            PATRONI_admin_PASSWORD: admin
            PATRONI_admin_OPTIONS: createdb,createrole

    patroni2:
        image: patronitraining/patroni
        networks: [ demo ]
        hostname: patroni2
        container_name: demo-patroni2
        environment:
            <<: *patroni_env
            PATRONI_NAME: patroni2

    patroni3:
        image: patronitraining/patroni
        networks: [ demo ]
        hostname: patroni3
        container_name: demo-patroni3
        environment:
            <<: *patroni_env
            PATRONI_NAME: patroni3