article Low Disk space Alert not triggering due to Custom disk-detection rules in Troubleshooting

Low Disk space Alert not triggering due to Custom disk-detection rules

ShahbazKhan — Mon, 11 Mar 2024 14:30:00 GMT

Self Service Summary

Customers see that the disk utilization was below the threshold, however, Dynatrace didn't trigger problems for the low disk space.

Host/Global setting for anomaly detection was enabled and Disk was below the threshold.

Troubleshooting

Please check if Custom disk-detection rules are configured and enabled.

The custom detection Rule Overrides the global anomaly detection rule and sets the disc detection and threshold on them.

If this Custom disk-detection is DISABLED then it will stop the monitoring of those detected disks for anomaly detection and the problem will not trigger.

Solution

The solution is to either remove the disk from the Custom disk-detection rule OR delete the Rule if not required

Re: Low Disk space Alert not triggering due to Custom disk-detection rules

dannemca — Mon, 11 Mar 2024 17:00:05 GMT

Been there, will do that!!

This is confusing, since the disable button is not clear, if we are disabling the custom rule, or if we are disabling the configured disk monitoring...

I have also checked with Support chat, and they told me the disabled rules should not impact the native monitoring... as lost as I am 😅

Re: Low Disk space Alert not triggering due to Custom disk-detection rules

AntonPineiro — Fri, 31 May 2024 13:09:22 GMT

Hi,

If we create a global custom rule, can we override it from host perspective? I cannot find that option in the UI, only in global settings or host groups settings.

Best regards

Re: Low Disk space Alert not triggering due to Custom disk-detection rules

AntonPineiro — Fri, 07 Jun 2024 13:52:58 GMT

Hi,

Maybe custom host rule would be available with "Disk Edge":