[databases]
ansible-test
[keystone]
ansible-test
[dockerregistry]
openstack01-node01
[rabbitmq]
ansible-test
ansible-test-2
ansible-test-3
[cassandra]
openstack01-node[01:03]
[first_cassandra]
openstack01-node01
[next_cassandra]
openstack01-node02
openstack01-node03
[first_cassandra:vars]
run_options=""
[next_cassandra:vars]
run_options="-e CASSANDRA_SEEDS=172.23.41.1"