Avamar: RabbitMQ Resolution Guide

Summary: RabbitMQ Resolution Guide

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Instructions

Background
  • RabbitMQ is a message Broker agent which accepts and forwards messages.
  • It is used in Avamar to accomplish message transfer with Data Protection Central (DPC) and some VMware related actions.
  • When DPC is used to monitor Avamar, Avamar uses dynamic shovels and queues to push messages to DPC. Avamar also receives messages from DPC when using RabbitMQ Remote Procedure Call (RPC).
  • Most of the time when an Avamar error occurs it is related to this connection between Avamar and DPC,
  • There may also be an issue with the local RabbitMQ Broker agent running on Avamar (when DPC is not in use).
 
Causes of Potential Issues:
  • RabbitMQ configuration file tampered with
  • Broken RabbitMQ shovel
  • Unresponsive RabbitMQ
  • Older versions of Avamar or DPC
  • DPC certificates misconfigured
  • Closed ports
  • Overflowing RabbitMQ queues
  • DPC services down
  • Authentication failures of the Avamar or Guest RabbitMQ accounts
  • A corrupt mnesia database
  • Partition full (100%)
 
 
Troubleshooting information:
  • How to check the DPC Service status: 
/usr/local/dpc/bin/dpc status
  • How to restart the service:
msgbrokerctl.pl --stop
msgbrokerctl.pl --start
  • How to reactivate Avamar with DPC:
mccli msgbroker quicksetup --host=<dpc_hostname> --user=administrator@dpc.local --pass=<dpc_password>
  • How to check the Avamar BRM settings in mcserver.xml
egrep "brmHostname|enableBrmService" /usr/local/avamar/var/mc/server_data/prefs/mcserver.xml
  • How to retrieve the DPC root ca from Avamar:
curl -ks --tlsv1.2 -u <dpcUser>:<dpcPassword> https://<dpcHostname>/brm/app/cert/getRootCA
  • How to check for overflowing RabbitMQ queues:
rabbitmqctl list_queues
  • How to check for purge a RabbitMQ queue:
rabbitmqctl purge_queue
  • How to check for partition capacity:
df -h


The default RabbitMQ configuration file (/etc/rabbitmq/rabbitmq.conf):

listeners.ssl.1 = 127.0.0.1:5671
listeners.ssl.2 = ::1:5671
listeners.tcp = none

ssl_options.versions.1 = tlsv1.2
ssl_options.cacertfile           = /etc/rabbitmq/rabbitmq_server_ssl.crt
ssl_options.certfile             = /etc/rabbitmq/rabbitmq_server_ssl.crt
ssl_options.keyfile              = /etc/rabbitmq/rabbitmq_server_ssl.key

ssl_options.verify               = verify_peer
ssl_options.fail_if_no_peer_cert = false
ssl_options.honor_cipher_order = true
ssl_options.honor_ecc_order    = true

ssl_options.ciphers.1 = TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
ssl_options.ciphers.2 = TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
ssl_options.ciphers.3 = TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
ssl_options.ciphers.4 = TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
ssl_options.ciphers.5 = TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
ssl_options.ciphers.6 = TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384


management.ssl.port       = 15671
management.ssl.ip       = 127.0.0.1
management.ssl.cacertfile = /etc/rabbitmq/rabbitmq_server_ssl.crt
management.ssl.certfile   = /etc/rabbitmq/rabbitmq_server_ssl.crt
management.ssl.keyfile    = /etc/rabbitmq/rabbitmq_server_ssl.key

management.ssl.honor_cipher_order   = true
management.ssl.honor_ecc_order      = true
management.ssl.client_renegotiation = false
management.ssl.secure_renegotiate   = true
management.ssl.versions.1 = tlsv1.2
management.ssl.ciphers.1 = TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
management.ssl.ciphers.2 = TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
management.ssl.ciphers.3 = TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
management.ssl.ciphers.4 = TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
management.ssl.ciphers.5 = TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
management.ssl.ciphers.6 = TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
 

If there are ongoing issues after reviewing the information and articles above, create a Service Request to get assistance from the Dell Technologies Avamar Support team.

Additional Information

Log files:

Avamar:
  • /usr/local/avamar/var/rabbitmq/log/rabbit@localhost.log
  • /var/log/rabbitmq
  • /usr/local/avamar/var/mc/server_log/mcserver.log.0
DPC:
  • /var/log/messages
  • /var/log/dpc/elg/ 
  • /var/log/dpc/monitor
  • /var/log/dpc/msm-ui-main
Automation Tooling:

Affected Products

Avamar
Article Properties
Article Number: 000210729
Article Type: How To
Last Modified: 05 مارس 2026
Version:  12
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