Node not starting after creating a new node in rabbitmq - rabbitmq

Question

I want to create a cluster of 3 nodes. I have created two nodes with command:
RABBITMQ_NODE_PORT=5680 RABBITMQ_NODENAME=rabbit1#localhost rabbitmq-server -detached
Now when i try to stop the node in order to join it to cluster, it gives me error stating the node is not started at all.
What i have done till now is installed rabbitmq and started it using rabbitmq-server.
rabbit1#localhost.log
Error description:
init:do_boot/3
init:start_em/1
rabbit:start_it/1 line 480
rabbit:broker_start/0 line 356
rabbit:start_apps/2 line 575
app_utils:manage_applications/6 line 126
lists:foldl/3 line 1263
rabbit:'-handle_app_error/1-fun-0-'/3 line 696
throw:{could_not_start,rabbitmq_mqtt,
{rabbitmq_mqtt,
{{shutdown,
{failed_to_start_child,'rabbit_mqtt_listener_sup_:::1883',
{shutdown,
{failed_to_start_child,
{ranch_listener_sup,{acceptor,{0,0,0,0,0,0,0,0},1883}},
{shutdown,
{failed_to_start_child,ranch_acceptors_sup,
{listen_error,
{acceptor,{0,0,0,0,0,0,0,0},1883},
eaddrinuse}}}}}}},
{rabbit_mqtt,start,[normal,[]]}}}}
Log file(s) (may contain more information):
/usr/local/var/log/rabbitmq/rabbit1#localhost.log
/usr/local/var/log/rabbitmq/rabbit1#localhost_upgrade.log
Terminal:
Most common reasons for this are:
* Target node is unreachable (e.g. due to hostname resolution, TCP connection or firewall issues)
* CLI tool fails to authenticate with the server (e.g. due to CLI tool's Erlang cookie not matching that of the server)
* Target node is not running
In addition to the diagnostics info below:
* See the CLI, clustering and networking guides on https://rabbitmq.com/documentation.html to learn more
* Consult server logs on node rabbit1#localhost
* If target node is configured to use long node names, don't forget to use --longnames with CLI tools
DIAGNOSTICS
===========
attempted to contact: [rabbit1#localhost]
rabbit1#localhost:
* connected to epmd (port 4369) on localhost
* epmd reports: node 'rabbit1' not running at all
other nodes on localhost: [rabbit]
* suggestion: start the node
Current node details:
* node name: 'rabbitmqcli-9206-rabbit#localhost'
* effective user's home directory: /Users/yashparekh
* Erlang cookie hash: +/3SPQl4T2w3zA11j1+o4Q==
I expect stop_app command to work in order to be able to join it to cluster.
Please let me know where i'm going wrong.
Thanks in advance.

Answer 1

{failed_to_start_child,
{ranch_listener_sup,{acceptor,{0,0,0,0,0,0,0,0},1883}},
{shutdown,
{failed_to_start_child,ranch_acceptors_sup,
{listen_error,
{acceptor,{0,0,0,0,0,0,0,0},1883},
eaddrinuse}}}}}}},
it means that the port 1883 (the MQTT port) is already used. you have to set also this port dynamically.