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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/04/05 15:13:14 UTC

[GitHub] [pulsar] NadirJ opened a new issue, #15032: [Monitoring - Broker] - Need a metric to track how many consumers are connected and consuming from a given subscription

NadirJ opened a new issue, #15032:
URL: https://github.com/apache/pulsar/issues/15032

   **Describe the bug**
   I'm monitoring Pulsar and I would like the ability to monitor how many consumers are connected and subscribing from a given subscription.
   
   Right this metric already exists `pulsar_consumers_count`
    
   It tells how many consumers are connected to a given topic/partition.
   
   If the label `subscription` could be added to this metric then I can correlate it various subscription metrics like
   `pulsar_subscription_back_log` and `pulsar_subscription_msg_rate_out`
   
   
   Specifically, I'm trying to detect "Stuck" Subscriptions and alert on this case when it occurs
   
   Here is the sample prometheus alerting rule I need
     ```
   - name: stuck-subscription
         rules:
         - alert: StuckParitionOrTopic
           expr: pulsar_subscription_back_log > 0 and pulsar_subscription_msg_rate_out == 0 and pulsar_consumers_count > 0
           for: 5m
           labels:
             severity: critical
           annotations:
             description: Subscription for {{ $labels.topic }} appears to be stuck.
             identifier: '{{ $labels.topic }}' 
   ```
   


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[GitHub] [pulsar] codelipenghui closed issue #15032: [Monitoring - Broker] - Need a metric to track how many consumers are connected and consuming from a given subscription

Posted by GitBox <gi...@apache.org>.
codelipenghui closed issue #15032: [Monitoring - Broker] - Need a metric to track how many consumers are connected and consuming from a given subscription
URL: https://github.com/apache/pulsar/issues/15032


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[GitHub] [pulsar] tjiuming commented on issue #15032: [Monitoring - Broker] - Need a metric to track how many consumers are connected and consuming from a given subscription

Posted by GitBox <gi...@apache.org>.
tjiuming commented on issue #15032:
URL: https://github.com/apache/pulsar/issues/15032#issuecomment-1089673588

   @codelipenghui  I’d like to handle the issue


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