docker-compose-citus.yml

# docker compose file for running a Citus cluster
# with 3-node etcd v3 cluster as the DCS and one haproxy node.
# The Citus cluster has a coordinator (3 nodes)
# and two worker clusters (2 nodes).
#
# Before starting it up you need to build the docker image:
# $ docker build -f Dockerfile.citus -t patroni-citus .
# The cluster could be started as:
# $ docker-compose -f docker-compose-citus.yml up -d
# You can read more about it in the:
# https://github.com/zalando/patroni/blob/master/docker/README.md#citus-cluster
version: "2"

networks:
    demo:

services:
    etcd1: &etcd
        image: patroni-citus
        networks: [ demo ]
        environment:
            ETCDCTL_API: 3
            ETCD_LISTEN_PEER_URLS: http://0.0.0.0:2380
            ETCD_LISTEN_CLIENT_URLS: http://0.0.0.0:2379
            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
        container_name: demo-etcd1
        hostname: etcd1
        command: etcd -name etcd1 -initial-advertise-peer-urls http://etcd1:2380

    etcd2:
        <<: *etcd
        container_name: demo-etcd2
        hostname: etcd2
        command: etcd -name etcd2 -initial-advertise-peer-urls http://etcd2:2380

    etcd3:
        <<: *etcd
        container_name: demo-etcd3
        hostname: etcd3
        command: etcd -name etcd3 -initial-advertise-peer-urls http://etcd3:2380

    haproxy:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: haproxy
        container_name: demo-haproxy
        ports:
            - "5000:5000"  # Access to the coorinator primary
            - "5001:5001"  # Load-balancing across workers primaries
        command: haproxy
        environment: &haproxy_env
            ETCDCTL_API: 3
            ETCDCTL_ENDPOINTS: http://etcd1:2379,http://etcd2:2379,http://etcd3:2379
            PATRONI_ETCD3_HOSTS: "'etcd1:2379','etcd2:2379','etcd3:2379'"
            PATRONI_SCOPE: demo
            PATRONI_CITUS_GROUP: 0
            PATRONI_CITUS_DATABASE: citus
            PGSSLMODE: verify-ca
            PGSSLKEY: /etc/ssl/private/ssl-cert-snakeoil.key
            PGSSLCERT: /etc/ssl/certs/ssl-cert-snakeoil.pem
            PGSSLROOTCERT: /etc/ssl/certs/ssl-cert-snakeoil.pem

    coord1:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: coord1
        container_name: demo-coord1
        environment: &coord_env
            <<: *haproxy_env
            PATRONI_NAME: coord1
            PATRONI_CITUS_GROUP: 0

    coord2:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: coord2
        container_name: demo-coord2
        environment:
            <<: *coord_env
            PATRONI_NAME: coord2

    coord3:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: coord3
        container_name: demo-coord3
        environment:
            <<: *coord_env
            PATRONI_NAME: coord3


    work1-1:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: work1-1
        container_name: demo-work1-1
        environment: &work1_env
            <<: *haproxy_env
            PATRONI_NAME: work1-1
            PATRONI_CITUS_GROUP: 1

    work1-2:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: work1-2
        container_name: demo-work1-2
        environment:
            <<: *work1_env
            PATRONI_NAME: work1-2


    work2-1:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: work2-1
        container_name: demo-work2-1
        environment: &work2_env
            <<: *haproxy_env
            PATRONI_NAME: work2-1
            PATRONI_CITUS_GROUP: 2

    work2-2:
        image: patroni-citus
        networks: [ demo ]
        env_file: docker/patroni.env
        hostname: work2-2
        container_name: demo-work2-2
        environment:
            <<: *work2_env
            PATRONI_NAME: work2-2