Creating rabbitmq.conf not allowing server to run due to IP/Port conflict

[eliassal]

Community Support Policy

• I have read RabbitMQ's Community Support Policy
• I run RabbitMQ 4.x, the only series currently covered by community support
• I promise to provide all relevant information (versions, logs from all nodes, rabbitmq-diagnostics output, detailed reproduction steps)

RabbitMQ version used

4.2.4

Erlang version used

27.3.x

Operating system (distribution) used

Ubuntu 24

How is RabbitMQ deployed?

Debian package

rabbitmq-diagnostics status output

See https://www.rabbitmq.com/docs/cli to learn how to use rabbitmq-diagnostics

Details

Status of node rabbit@chef-u16desk ...
Runtime

OS PID: 228985
OS: Linux
Uptime (seconds): 43701
Is under maintenance?: false
RabbitMQ version: 4.2.5
RabbitMQ release series support status: see https://www.rabbitmq.com/release-information
Node name: rabbit@chef-u16desk
Erlang configuration: Erlang/OTP 27 [erts-15.2.7.6] [source] [64-bit] [smp:128:2] [ds:128:2:10] [async-threads:1] [jit:ns]
Crypto library: OpenSSL 3.0.13 30 Jan 2024
Erlang processes: 554 used, 1048576 limit
Scheduler run queue: 1
Cluster heartbeat timeout (net_ticktime): 60

Plugins

Enabled plugin file: /etc/rabbitmq/enabled_plugins
Enabled plugins:

 * rabbitmq_management
 * rabbitmq_management_agent
 * rabbitmq_web_dispatch
 * amqp_client
 * cowboy
 * oauth2_client
 * jose

Data directory

Node data directory: /var/lib/rabbitmq/mnesia/rabbit@chef-u16desk
Raft data directory: /var/lib/rabbitmq/mnesia/rabbit@chef-u16desk/quorum/rabbit@chef-u16desk

Config files


Log file(s)

 * /var/log/rabbitmq/rabbit@chef-u16desk.log
 * <stdout>

Alarms

(none)

Tags

(none)

Memory

Total memory used: 0.2118 gb
Calculation strategy: rss
Memory high watermark setting: 0.6 of available memory, computed to: 4.2569 gb

allocated_unused: 0.1216 gb (48.52 %)
other_system: 0.077 gb (30.7 %)
code: 0.0235 gb (9.37 %)
other_proc: 0.0208 gb (8.3 %)
metrics: 0.0066 gb (2.64 %)
plugins: 0.0018 gb (0.71 %)
msg_index: 0.0012 gb (0.46 %)
atom: 0.0011 gb (0.45 %)
mgmt_db: 0.0007 gb (0.27 %)
connection_other: 0.0002 gb (0.09 %)
connection_readers: 0.0001 gb (0.04 %)
binary: 0.0001 gb (0.04 %)
mnesia: 0.0001 gb (0.03 %)
queue_procs: 0.0 gb (0.02 %)
metadata_store: 0.0 gb (0.02 %)
connection_channels: 0.0 gb (0.01 %)
quorum_ets: 0.0 gb (0.0 %)
metadata_store_ets: 0.0 gb (0.0 %)
connection_writers: 0.0 gb (0.0 %)
quorum_queue_procs: 0.0 gb (0.0 %)
quorum_queue_dlx_procs: 0.0 gb (0.0 %)
stream_queue_procs: 0.0 gb (0.0 %)
stream_queue_replica_reader_procs: 0.0 gb (0.0 %)
stream_queue_coordinator_procs: 0.0 gb (0.0 %)
other_ets: 0.0 gb (0.0 %)
reserved_unallocated: 0.0 gb (0.0 %)

File Descriptors

Total: 0, limit: 32671

Free Disk Space

Low free disk space watermark: 0.05 gb
Free disk space: 14.7739 gb

Totals

Connection count: 3
Queue count: 4
Virtual host count: 1

Listeners

Interface: [::], port: 15672, protocol: http, purpose: HTTP API
Interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0

Logs from node 1 (with sensitive values edited out)

See https://www.rabbitmq.com/docs/logging to learn how to collect logs

Details

2026-03-28 17:41:14.806853+01:00 [info] <0.211.0>  Starting RabbitMQ 4.2.5 on Erlang 27.3.4.9 [jit]
2026-03-28 17:41:14.806853+01:00 [info] <0.211.0>  Copyright (c) 2007-2026 Broadcom Inc and/or its subsidiaries
2026-03-28 17:41:14.806853+01:00 [info] <0.211.0>  Licensed under the MPL 2.0. Website: https://rabbitmq.com
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0> 
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>  node           : rabbit@chef-u16desk
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>  home dir       : /var/lib/rabbitmq
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>  config file(s) : /etc/rabbitmq/rabbitmq.conf
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>  cookie hash    : 5kDosq9m7Ob/0JSQC1HomA==
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>  log(s)         : /var/log/rabbitmq/rabbit@chef-u16desk.log
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>                 : <stdout>
2026-03-28 17:41:14.816874+01:00 [info] <0.211.0>  data dir       : /var/lib/rabbitmq/mnesia/rabbit@chef-u16desk
2026-03-28 17:41:15.048723+01:00 [info] <0.211.0> Running boot step pre_boot defined by app rabbit
2026-03-28 17:41:15.048887+01:00 [info] <0.211.0> Running boot step rabbit_global_counters defined by app rabbit
2026-03-28 17:41:15.051034+01:00 [info] <0.211.0> Running boot step rabbit_osiris_metrics defined by app rabbit
2026-03-28 17:41:15.051378+01:00 [info] <0.211.0> Running boot step rabbit_core_metrics defined by app rabbit
2026-03-28 17:41:15.066626+01:00 [info] <0.211.0> Running boot step rabbit_alarm defined by app rabbit
2026-03-28 17:41:15.119422+01:00 [info] <0.339.0> Memory high watermark set to 4059 MiB (4256904806 bytes) of 6766 MiB (7094841344 bytes) total
2026-03-28 17:41:15.129702+01:00 [info] <0.341.0> Enabling free disk space monitoring (disk free space: 14243246080, total memory: 7094841344)
2026-03-28 17:41:15.129882+01:00 [info] <0.341.0> Disk free limit set to 50MB
2026-03-28 17:41:15.135125+01:00 [info] <0.211.0> Running boot step code_server_cache defined by app rabbit
2026-03-28 17:41:15.135589+01:00 [info] <0.211.0> Running boot step file_handle_cache defined by app rabbit
2026-03-28 17:41:15.167054+01:00 [info] <0.344.0> Limiting to approx 32671 file handles (29401 sockets)
2026-03-28 17:41:15.167631+01:00 [info] <0.345.0> FHC read buffering: OFF
2026-03-28 17:41:15.167843+01:00 [info] <0.345.0> FHC write buffering: ON
2026-03-28 17:41:15.173835+01:00 [info] <0.211.0> Running boot step worker_pool defined by app rabbit
2026-03-28 17:41:15.174191+01:00 [info] <0.288.0> Will use 128 processes for default worker pool
2026-03-28 17:41:15.174348+01:00 [info] <0.288.0> Starting worker pool 'worker_pool' with 128 processes in it
2026-03-28 17:41:15.190531+01:00 [info] <0.211.0> Running boot step rabbit_registry defined by app rabbit
2026-03-28 17:41:15.190845+01:00 [info] <0.211.0> Running boot step database defined by app rabbit
2026-03-28 17:41:15.192046+01:00 [info] <0.211.0> Peer discovery: configured backend: rabbit_peer_discovery_classic_config
2026-03-28 17:41:15.197878+01:00 [info] <0.211.0> Waiting for Mnesia tables for 30000 ms, 9 retries left
2026-03-28 17:41:15.212802+01:00 [info] <0.211.0> Successfully synced tables from a peer
2026-03-28 17:41:15.250015+01:00 [info] <0.211.0> Waiting for Mnesia tables for 30000 ms, 9 retries left
2026-03-28 17:41:15.250440+01:00 [info] <0.211.0> Successfully synced tables from a peer
2026-03-28 17:41:15.251099+01:00 [info] <0.211.0> Running boot step tracking_metadata_store defined by app rabbit
2026-03-28 17:41:15.251439+01:00 [info] <0.488.0> Setting up a table for connection tracking on this node: tracked_connection
2026-03-28 17:41:15.251611+01:00 [info] <0.488.0> Setting up a table for per-vhost connection counting on this node: tracked_connection_per_vhost
2026-03-28 17:41:15.252055+01:00 [info] <0.488.0> Setting up a table for per-user connection counting on this node: tracked_connection_per_user
2026-03-28 17:41:15.252472+01:00 [info] <0.488.0> Setting up a table for channel tracking on this node: tracked_channel
2026-03-28 17:41:15.252636+01:00 [info] <0.488.0> Setting up a table for channel tracking on this node: tracked_channel_per_user
2026-03-28 17:41:15.253106+01:00 [info] <0.211.0> Running boot step networking_metadata_store defined by app rabbit
2026-03-28 17:41:15.253434+01:00 [info] <0.211.0> Running boot step feature_flags defined by app rabbit
2026-03-28 17:41:15.254057+01:00 [info] <0.211.0> Running boot step auth_backend_plugins_check defined by app rabbit
2026-03-28 17:41:15.254341+01:00 [info] <0.211.0> Running boot step codec_correctness_check defined by app rabbit
2026-03-28 17:41:15.254528+01:00 [info] <0.211.0> Running boot step external_infrastructure defined by app rabbit
2026-03-28 17:41:15.254716+01:00 [info] <0.211.0> Running boot step rabbit_event defined by app rabbit
2026-03-28 17:41:15.255097+01:00 [info] <0.211.0> Running boot step rabbit_auth_mechanism_amqplain defined by app rabbit
2026-03-28 17:41:15.255312+01:00 [info] <0.211.0> Running boot step rabbit_auth_mechanism_anonymous defined by app rabbit
2026-03-28 17:41:15.255502+01:00 [info] <0.211.0> Running boot step rabbit_auth_mechanism_cr_demo defined by app rabbit
2026-03-28 17:41:15.255760+01:00 [info] <0.211.0> Running boot step rabbit_auth_mechanism_plain defined by app rabbit
2026-03-28 17:41:15.256259+01:00 [info] <0.211.0> Running boot step rabbit_exchange_type_direct defined by app rabbit
2026-03-28 17:41:15.257447+01:00 [info] <0.211.0> Running boot step rabbit_exchange_type_fanout defined by app rabbit
2026-03-28 17:41:15.257864+01:00 [info] <0.211.0> Running boot step rabbit_exchange_type_headers defined by app rabbit
2026-03-28 17:41:15.258472+01:00 [info] <0.211.0> Running boot step rabbit_exchange_type_local_random defined by app rabbit
2026-03-28 17:41:15.259051+01:00 [info] <0.211.0> Running boot step rabbit_exchange_type_topic defined by app rabbit
2026-03-28 17:41:15.259458+01:00 [info] <0.211.0> Running boot step rabbit_priority_queue defined by app rabbit
2026-03-28 17:41:15.259899+01:00 [info] <0.211.0> Priority queues enabled, real BQ is rabbit_variable_queue
2026-03-28 17:41:15.260165+01:00 [info] <0.211.0> Running boot step kernel_ready defined by app rabbit
2026-03-28 17:41:15.260295+01:00 [info] <0.211.0> Running boot step pg_local_amqp_connection defined by app rabbit
2026-03-28 17:41:15.281734+01:00 [info] <0.211.0> Running boot step pg_local_amqp_session defined by app rabbit
2026-03-28 17:41:15.282399+01:00 [info] <0.211.0> Running boot step rabbit_sysmon_minder defined by app rabbit
2026-03-28 17:41:15.283321+01:00 [info] <0.211.0> Running boot step rabbit_epmd_monitor defined by app rabbit
2026-03-28 17:41:15.289011+01:00 [info] <0.497.0> epmd monitor knows us, inter-node communication (distribution) port: 25672
2026-03-28 17:41:15.289470+01:00 [info] <0.211.0> Running boot step guid_generator defined by app rabbit
2026-03-28 17:41:15.301483+01:00 [info] <0.211.0> Running boot step rabbit_node_monitor defined by app rabbit
2026-03-28 17:41:15.302481+01:00 [info] <0.501.0> Starting rabbit_node_monitor (in ignore mode)
2026-03-28 17:41:15.303028+01:00 [info] <0.211.0> Running boot step delegate_sup defined by app rabbit
2026-03-28 17:41:15.305582+01:00 [info] <0.211.0> Running boot step rabbit_fifo_dlx_sup defined by app rabbit
2026-03-28 17:41:15.306093+01:00 [info] <0.211.0> Running boot step core_initialized defined by app rabbit
2026-03-28 17:41:15.306302+01:00 [info] <0.211.0> Running boot step rabbit_channel_tracking_handler defined by app rabbit
2026-03-28 17:41:15.306751+01:00 [info] <0.211.0> Running boot step rabbit_classic_queue_type defined by app rabbit
2026-03-28 17:41:15.307350+01:00 [info] <0.211.0> Running boot step rabbit_classic_queue defined by app rabbit
2026-03-28 17:41:15.307825+01:00 [info] <0.211.0> Running boot step rabbit_connection_tracking_handler defined by app rabbit
2026-03-28 17:41:15.308125+01:00 [info] <0.211.0> Running boot step rabbit_definitions_hashing defined by app rabbit
2026-03-28 17:41:15.308409+01:00 [info] <0.211.0> Running boot step rabbit_exchange_parameters defined by app rabbit
2026-03-28 17:41:15.361772+01:00 [info] <0.211.0> Running boot step rabbit_policies defined by app rabbit
2026-03-28 17:41:15.363974+01:00 [info] <0.211.0> Running boot step rabbit_quorum_queue_type defined by app rabbit
2026-03-28 17:41:15.364352+01:00 [info] <0.211.0> Running boot step rabbit_stream_queue defined by app rabbit
2026-03-28 17:41:15.364590+01:00 [info] <0.211.0> Running boot step rabbit_policy defined by app rabbit
2026-03-28 17:41:15.364890+01:00 [info] <0.211.0> Running boot step rabbit_quorum_event_subscriber defined by app rabbit
2026-03-28 17:41:15.365317+01:00 [info] <0.211.0> Running boot step rabbit_quorum_memory_manager defined by app rabbit
2026-03-28 17:41:15.365642+01:00 [info] <0.211.0> Running boot step rabbit_quorum_queue defined by app rabbit
2026-03-28 17:41:15.366444+01:00 [info] <0.211.0> Running boot step rabbit_stream_coordinator defined by app rabbit
2026-03-28 17:41:15.366986+01:00 [info] <0.211.0> Running boot step rabbit_vhost_limit defined by app rabbit
2026-03-28 17:41:15.367311+01:00 [info] <0.211.0> Running boot step recovery defined by app rabbit
2026-03-28 17:41:15.501888+01:00 [info] <0.529.0> Making sure data directory '/var/lib/rabbitmq/mnesia/rabbit@chef-u16desk/msg_stores/vhosts/628WB79CIFDYO9LJI6DKMI09L' for vhost '/' exists
2026-03-28 17:41:15.559857+01:00 [info] <0.529.0> Starting message stores for vhost '/'
2026-03-28 17:41:15.581853+01:00 [info] <0.529.0> Started message store of type transient for vhost '/'
2026-03-28 17:41:15.592745+01:00 [info] <0.529.0> Started message store of type persistent for vhost '/'
2026-03-28 17:41:15.593362+01:00 [info] <0.529.0> Recovering 0 queues of type rabbit_classic_queue took 86ms
2026-03-28 17:41:15.593533+01:00 [info] <0.529.0> Recovering 0 queues of type rabbit_quorum_queue took 0ms
2026-03-28 17:41:15.594321+01:00 [info] <0.529.0> Recovering 0 queues of type rabbit_stream_queue took 0ms
2026-03-28 17:41:15.608567+01:00 [info] <0.211.0> Running boot step prevent_startup_if_node_was_reset defined by app rabbit
2026-03-28 17:41:15.609188+01:00 [info] <0.211.0> Running boot step empty_db_check defined by app rabbit
2026-03-28 17:41:15.609457+01:00 [info] <0.211.0> Will not seed default virtual host and user: have definitions to load...
2026-03-28 17:41:15.609700+01:00 [info] <0.211.0> Running boot step rabbit_observer_cli defined by app rabbit
2026-03-28 17:41:15.610382+01:00 [info] <0.211.0> Running boot step rabbit_core_metrics_gc defined by app rabbit
2026-03-28 17:41:15.611298+01:00 [info] <0.211.0> Running boot step background_gc defined by app rabbit
2026-03-28 17:41:15.611841+01:00 [info] <0.211.0> Running boot step rabbit_observer_cli_classic_queues defined by app rabbit
2026-03-28 17:41:15.612244+01:00 [info] <0.211.0> Running boot step rabbit_observer_cli_quorum_queues defined by app rabbit
2026-03-28 17:41:15.612482+01:00 [info] <0.211.0> Running boot step routing_ready defined by app rabbit
2026-03-28 17:41:15.612819+01:00 [info] <0.211.0> Running boot step pre_flight defined by app rabbit
2026-03-28 17:41:15.613281+01:00 [info] <0.211.0> Running boot step notify_cluster defined by app rabbit
2026-03-28 17:41:15.613531+01:00 [info] <0.211.0> Running boot step networking defined by app rabbit
2026-03-28 17:41:15.613881+01:00 [info] <0.211.0> Running boot step rabbit_quorum_queue_periodic_membership_reconciliation defined by app rabbit
2026-03-28 17:41:15.614692+01:00 [info] <0.211.0> Running boot step definition_import_worker_pool defined by app rabbit
2026-03-28 17:41:15.614948+01:00 [info] <0.288.0> Starting worker pool 'definition_import_pool' with 2 processes in it
2026-03-28 17:41:15.618531+01:00 [info] <0.211.0> Running boot step cluster_name defined by app rabbit
2026-03-28 17:41:15.618752+01:00 [info] <0.211.0> Running boot step virtual_host_reconciliation defined by app rabbit
2026-03-28 17:41:15.619399+01:00 [info] <0.211.0> Running boot step direct_client defined by app rabbit
2026-03-28 17:41:15.619803+01:00 [info] <0.211.0> Running boot step logger_exchange defined by app rabbit
2026-03-28 17:41:15.620761+01:00 [info] <0.211.0> Running boot step cluster_tags defined by app rabbit
2026-03-28 17:41:15.636058+01:00 [info] <0.583.0> Resetting node maintenance status
2026-03-28 17:41:15.637707+01:00 [info] <0.583.0> Ready to start client connection listeners
2026-03-28 17:41:15.938818+01:00 [info] <0.601.0> started TCP listener on [::]:5672
2026-03-28 17:41:16.312296+01:00 [info] <0.583.0> Server startup complete; 0 plugins started.
2026-03-28 17:41:16.446301+01:00 [info] <0.10.0> Time to start RabbitMQ: 17221 ms

Logs from node 2 (if applicable, with sensitive values edited out)

See https://www.rabbitmq.com/docs/logging to learn how to collect logs

Details

# PASTE LOG HERE, BETWEEN BACKTICKS

Logs from node 3 (if applicable, with sensitive values edited out)

See https://www.rabbitmq.com/docs/logging to learn how to collect logs

Details

# PASTE LOG HERE, BETWEEN BACKTICKS

rabbitmq.conf

See https://www.rabbitmq.com/docs/configure#config-location to learn how to find rabbitmq.conf file location

Details

listeners.tcp.default = 5672
management.tcp.port = 15672
management.listener.ip = 192.168.1.17
management.listener.port = 15672

Steps to deploy RabbitMQ cluster

Instructions on RMQ site for Ubuntu

Steps to reproduce the behavior in question

I have RMQ up and running and can access it but earlier, I had some issues with accessing management UI, hopefully I understod that I should enable management plugin. So I created /etc/rabbitmq/rabbitmq.conf but the issue continued "not able to access the Web UI at 10762.
So I enabled the plugin When I tried to restart the RMQ-service, it errored and indicated that there was conflicting IP/Port issues.
I removed the Rabbitmq.conf from /etc/rabbitmq/ and service restarted correctly and I was able to access the web UI.

So the question is there another config file? If yes where it is located?
Thanks for your help

advanced.config

See https://www.rabbitmq.com/docs/configure#config-location to learn how to find advanced.config file location

Details

# PASTE advanced.config HERE, BETWEEN BACKTICKS

Application code

Details

# PASTE CODE HERE, BETWEEN BACKTICKS

Kubernetes deployment file

Details

# Relevant parts of K8S deployment that demonstrate how RabbitMQ is deployed
# PASTE YAML HERE, BETWEEN BACKTICKS

What problem are you trying to solve?

Use a config file to control IP4 and port

[michaelklishin]

@eliassal as explained previously, RabbitMQ management UI port is not 10762. It can be overridden to be 10567 in rabbitmq.conf but I'd recommend against that as you are seemingly new to RabbitMQ.

Restarting RabbitMQ after enabling a plugin (or disabling it) hasn't been necessary since 3.0 or so (shipped in late 2012).

The message suggests that you have another node running on one of the ports used by RabbitMQ. It could be another node, a container with a forwarded port, or something like.

Ports are set via rabbitmq.conf, and what other config files exist, and what purpose they serve, has been documented for many years.

We do not guess in this community, @eliassal, so either provide an exact rabbitmq.conf used and the exact, complete error message, or figure things out on your own.

[eliassal]

Hi @michaelklishin I have already posted the contents of rabbitmq.conf (up hear) which is

listeners.tcp.default = 5672
management.tcp.port = 15672
management.listener.ip = 192.168.1.17
management.listener.port = 15672

I have nothing listening on those ports

When I run
rabbitmq-diagnostics status
It indicates "No conf files" So my question is where default values are configured in this case?

[michaelklishin]

I have nothing listening on those ports

Port conflict errors are never false positives, so yes, you do have something (like I said, it could be a different node, a different node running in a container).

It indicates "No conf files" So my question is where default values are configured in this case?

In the build system metadata or the plugin source code.

If the question is where the default rabbitmq.conf location is, it platform-specific and documented (and installation method specific). You don't have to depend on the default location, it can be changed.