RabbitmqTooManyConsumers

RabbitmqTooManyConsumers #

Queue should have only 1 consumer

Alert Rule
alert: RabbitmqTooManyConsumers
annotations:
  description: |-
    Queue should have only 1 consumer
      VALUE = {{ $value }}
      LABELS = {{ $labels }}    
  runbook: https://srerun.github.io/prometheus-alerts/runbooks/kbudde-rabbitmq-exporter/rabbitmqtoomanyconsumers/
  summary: RabbitMQ too many consumers (instance {{ $labels.instance }})
expr: rabbitmq_queue_consumers{queue="my-queue"} > 1
for: 0m
labels:
  severity: critical

Here is a runbook for the RabbitMQTooManyConsumers alert:

Meaning #

The RabbitMQTooManyConsumers alert is triggered when the number of consumers connected to the “my-queue” queue exceeds 1. This indicates a potential issue with the RabbitMQ configuration or application design, as queue consumers should be limited to a single instance to prevent message duplication or other issues.

Impact #

The impact of this alert can be significant, as it may lead to:

  • Message duplication or loss
  • Increased resource utilization on the RabbitMQ server
  • Application performance degradation
  • Potential data inconsistencies or corruption

Diagnosis #

To diagnose the root cause of the alert, follow these steps:

  1. Check the RabbitMQ management UI to verify the number of consumers connected to the “my-queue” queue.
  2. Investigate the application logs to identify which consumers are connected to the queue and why they are not properly configured.
  3. Verify the RabbitMQ configuration to ensure that the queue is properly defined and configured for a single consumer.

Mitigation #

To mitigate the issue, follow these steps:

  1. Identify and terminate any unnecessary consumer connections to the “my-queue” queue using the RabbitMQ management UI or the rabbitmqctl command-line tool.
  2. Review and update the application configuration to ensure that only a single consumer is connected to the queue.
  3. Verify that the RabbitMQ configuration is correct and that the queue is properly defined for a single consumer.
  4. Monitor the queue and consumer connections to ensure that the issue does not reoccur.

By following these steps, you should be able to resolve the issue and prevent future occurrences of the RabbitMQTooManyConsumers alert.

Edit this page