Forum Discussion

Arjuna's avatar
Arjuna
2 years ago
Solved

LogicMonitor "Application ELB" Datasource returns NoData instead of metric for ELB 5XX

We have noticed "HTTPCode_ELB_5XX_Count” Datapoint from "AWS_Application_ELB” Datasource configured to collect "Raw Data” from AWS ELB following the Metric path "AWS/ApplicationELB>LoadBalancer:##sys...
alerts
ApplicationELB
cloudwatch
datapoint
datasource
http5XX
NoData
  • Mike_Moniz's avatar
    Mike_Moniz
    2 years ago

    Yeah, for example AWS_ELB and others have complex datapoints that looks like this:

    if(un(HTTPCode_Backend_5XX_Raw),0,HTTPCode_Backend_5XX_Raw)

    Which will return 0 if HTTPCode_Backend_5XX_Raw is NoData. Perhaps you can update AWS_Application_ELB to work the same way. Or put in a LM feature request to implement it in future versions.

Mike_Moniz's avatar
Mike_Moniz
Icon for Professor rankProfessor
2 years ago

I’ve noticed the same issue with LMCloud and have had to manually disable then re-enable alerting to reset it. I think it’s a limitation in that cloudwatch will only report data it has and many times that doesn’t include 0. I agree that LM should account for this and set 0 anyway. I think I’ve seen some DataSources that have complex datapoints that attempt this, but not sure how wide spread (or I’m thinking of something else).