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CRE-2024-0007

RabbitMQ Mnesia overloadedCritical
Impact: 9/10
Mitigation: 8/10

CRE-2024-0007View on GitHub

Description

The underlying Erlang process, Mnesia, is overloaded (` WARNING Mnesia is overloaded`).


Cause

One way this can happen is when a RabbitMQ cluster is processing a large number of persistent mirrored queues at boot. There are so many queues that the underlying Erlang process, Mnesia, reports that it is overloaded while recovering these queues.


Mitigation

  • Increase the size of the cluster
  • Increase the Kubernetes CPU limits for the RabbitMQ brokers
  • Consider adjusting mirroring policies to limit the number of mirrored queues
  • Remove high-availability policies from queues where it is not needed
  • Consider using lazy queues to avoid incurring the costs of writing data to disk

References