Hey , I am evaluating Openstack with Kolla (have the latest ) and following the steps. I see that rabbitmq fails to start up and (keeps restarting). Essentially the script fails in deploy. I have a single node all in one config. Can someone tell me what the cause for this failure? RUNNING HANDLER [rabbitmq : Waiting for rabbitmq to start on first node] **************************************************************************************************************** fatal: [localhost]: FAILED! => {"changed": true, "cmd": "docker exec rabbitmq rabbitmqctl wait /var/lib/rabbitmq/mnesia/rabbitmq.pid", "delta": "0:00:07.732346", "end": "2019-11-25 13:33:12.102342", "msg": "non-zero return code", "rc": 137, "start": "2019-11-25 13:33:04.369996", "stderr": "", "stderr_lines": [], "stdout": "Waiting for 'rabbit@kolla-ubuntu'\npid is 6", "stdout_lines": ["Waiting for 'rabbit@kolla-ubuntu'", "pid is 6"]} RUNNING HANDLER [rabbitmq : Restart rabbitmq container (rest of nodes)] ***************************************************************************************************************** NO MORE HOSTS LEFT ********************************************************************************************************************************************************************** PLAY RECAP ****************************************************************************************************************************************************************************** localhost : ok=95 changed=2 unreachable=0 failed=1 skipped=78 rescued=0 ignored=0 Command failed ansible-playbook -i ./all-in-one -e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml -e CONFIG_DIR=/etc/kolla -e kolla_action=deploy /home/ubuntu/venv/share/kolla-ansible/ansible/site.yml Accessing the container logs for rabbitmq .. this is what I see BOOT FAILED =========== Error description: {could_not_start,rabbitmq_management, {rabbitmq_management, {bad_return, {{rabbit_mgmt_app,start,[normal,[]]}, {'EXIT', {{could_not_start_listener, [{port,15672}], {shutdown, {failed_to_start_child,ranch_acceptors_sup, {listen_error,rabbit_web_dispatch_sup_15672,eaddrinuse}}}}, {gen_server,call, [rabbit_web_dispatch_registry, {add,rabbit_mgmt, [{port,15672}], #Fun<rabbit_web_dispatch.0.49789095>, --RamaK E-MAIL CONFIDENTIALITY NOTICE: The contents of this e-mail message and any attachments are intended solely for the addressee(s) and may contain confidential and/or legally privileged information. If you are not the intended recipient of this message or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message and any attachments. If you are not the intended recipient, you are notified that any use, dissemination, distribution, copying, or storage of this message or any attachment is strictly prohibited.