groups:

- name: RabbitmqExporter

  
  rules:

    # 1m delay allows a restart without triggering an alert.
    - alert: RabbitmqNodeDown
      expr: 'sum(rabbitmq_build_info) < 3'
      for: 1m
      labels:
        severity: critical
      annotations:
        summary: RabbitMQ node down (instance {{ $labels.instance }})
        description: "Less than 3 nodes running in RabbitMQ cluster\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    # 1m delay allows a restart without triggering an alert.
    - alert: RabbitmqNodeNotDistributed
      expr: 'erlang_vm_dist_node_state < 3'
      for: 1m
      labels:
        severity: critical
      annotations:
        summary: RabbitMQ node not distributed (instance {{ $labels.instance }})
        description: "Distribution link to peer {{ $labels.peer }} is not 'up' (state {{ $value }})\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqInstancesDifferentVersions
      expr: 'count(count(rabbitmq_build_info) by (rabbitmq_version)) > 1'
      for: 1h
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ instances different versions (instance {{ $labels.instance }})
        description: "Running different version of RabbitMQ in the same cluster, can lead to failure.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqMemoryHigh
      expr: 'rabbitmq_process_resident_memory_bytes / rabbitmq_resident_memory_limit_bytes * 100 > 90 and rabbitmq_resident_memory_limit_bytes > 0'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ memory high (instance {{ $labels.instance }})
        description: "A node use more than 90% of allocated RAM\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqFileDescriptorsUsage
      expr: 'rabbitmq_process_open_fds / rabbitmq_process_max_fds * 100 > 90 and rabbitmq_process_max_fds > 0'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ file descriptors usage (instance {{ $labels.instance }})
        description: "A node use more than 90% of file descriptors\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqTooManyReadyMessages
      expr: 'sum(rabbitmq_queue_messages_ready) BY (queue) > 1000'
      for: 1m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ too many ready messages (instance {{ $labels.instance }})
        description: "RabbitMQ too many ready messages on queue {{ $labels.queue }} ({{ $value }})\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqTooManyUnackMessages
      expr: 'sum(rabbitmq_queue_messages_unacked) BY (queue) > 1000'
      for: 1m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ too many unack messages (instance {{ $labels.instance }})
        description: "Too many unacknowledged messages on queue {{ $labels.queue }} ({{ $value }})\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqTooManyConnections
      expr: 'rabbitmq_connections > 1000'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ too many connections (instance {{ $labels.instance }})
        description: "The total connections of a node is too high\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    - alert: RabbitmqNoQueueConsumer
      expr: 'rabbitmq_queue_consumers < 1'
      for: 1m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ no queue consumer (instance {{ $labels.instance }})
        description: "A queue has less than 1 consumer\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

    # Threshold of 3 avoids noise from occasional misroutes. Adjust based on your expected traffic patterns.
    - alert: RabbitmqUnroutableMessages
      expr: 'increase(rabbitmq_channel_messages_unroutable_returned_total[5m]) > 3 or increase(rabbitmq_channel_messages_unroutable_dropped_total[5m]) > 3'
      for: 2m
      labels:
        severity: warning
      annotations:
        summary: RabbitMQ unroutable messages (instance {{ $labels.instance }})
        description: "A queue has unroutable messages ({{ $value }} in the last 5m)\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"