Incorrect ELB Alerts

vinod's Avatar


31 Aug, 2012 02:19 PM


I have an ELB in Oregon West with 2 instances. I've setup alerts to notify me when avg healthy instances is less than 2. I can see both health instances but this alert is getting triggered -

Number of Healthy instances for ELB [VSVPCELB] is being reported by CloudWatch as [1] at [Fri Aug 31 10:08:00 -0400 2012], which is less than the monitoring threshold of [2]

I can confirm that both instances are healthy - inside ylastic as well as the AWS console.

Can't figure out what the issue is. Any ideas?


  1. Support Staff 1 Posted by Ylastic on 31 Aug, 2012 03:28 PM

    Ylastic's Avatar

    There was a report on the AWS forum some time back that once in a while Cloudwatch will return incorrect number of healthy instances for an ELB. Not sure what triggers this as far as the wrong value being returned. Will check around and see if anyone has heard more about this.

  2. Ylastic closed this discussion on 08 Aug, 2014 02:39 PM.

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