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Bellow the very first skeleton to be used to create a couchDb cluster with 3 docker containers

• all files should be in couchdb_cluster directory - if not, NODENAME should be updated to use the FQDN based on default docker compose network.
• docker-compose.yml

version: "3"
services:
  node1:
    image: couchdb:2.1.1
    environment:
      - NODENAME=node1.couchdbcluster_default
      - COUCHDB_USER=admin
      - COUCHDB_PASSWORD=admin
    ports:
      - "5981:5984"
  node2:
    image: couchdb:2.1.1
    environment:
      - NODENAME=node2.couchdbcluster_default
      - COUCHDB_USER=admin
      - COUCHDB_PASSWORD=admin
    ports:
      - "5982:5984"
  node3:
    image: couchdb:2.1.1
    environment:
      - NODENAME=node3.couchdbcluster_default
      - COUCHDB_USER=admin
      - COUCHDB_PASSWORD=admin
    ports:
      - "5983:5984"

• initCluster.sh

curl -X POST -H "Content-Type: application/json" http://admin:admin@tm171lin209.wls.ro.alcatel-lucent.com:5981/_cluster_setup -d '{"action": "enable_cluster", "bind_address":"0.0.0.0", "username": "admin", "password":"admin", "node_count":"3"}'

curl -X POST -H "Content-Type: application/json" http://admin:admin@tm171lin209.wls.ro.alcatel-lucent.com:5981/_cluster_setup -d '{"action": "enable_cluster", "bind_address":"0.0.0.0", "username": "admin", "password":"admin", "port": 5984, "node_count": "3", "remote_node": "couchdb@node2.couchdbcluster_default", "remote_current_user": "admin", "remote_current_password": "admin" }'
curl -X POST -H "Content-Type: application/json" http://admin:admin@tm171lin209.wls.ro.alcatel-lucent.com:5981/_cluster_setup -d '{"action": "add_node", "host":"node2.couchdbcluster_default", "port": "5984", "username": "admin", "password":"admin"}'

curl -X POST -H "Content-Type: application/json" http://admin:admin@tm171lin209.wls.ro.alcatel-lucent.com:5981/_cluster_setup -d '{"action": "enable_cluster", "bind_address":"0.0.0.0", "username": "admin", "password":"admin", "port": 5984, "node_count": "3", "remote_node": "couchdb@node3.couchdbcluster_default", "remote_current_user": "admin", "remote_current_password": "admin" }'
curl -X POST -H "Content-Type: application/json" http://admin:admin@tm171lin209.wls.ro.alcatel-lucent.com:5981/_cluster_setup -d '{"action": "add_node", "host":"node3.couchdbcluster_default", "port": "5984", "username": "admin", "password":"admin"}'

curl -X POST -H "Content-Type: application/json" http://admin:admin@tm171lin209.wls.ro.alcatel-lucent.com:5981/_cluster_setup -d '{"action": "finish_cluster"}'

• checkCluster.sh

curl -X GET "http://admin:admin@localhost:5981/_membership"
curl -X GET "http://admin:admin@localhost:5982/_membership"
curl -X GET "http://admin:admin@localhost:5983/_membership"

• example or running the cluster - commands to be executed in couchdb_cluster directory:

docker-compose up -d
sh initCluster.sh
sh checkCluster.sh