Azure VM not generating alerts for DISK . Not getting data in Log analytics

Question

Azure VM not generating alerts for DISK . Not getting data in Log analytics

Checked - Extension health - It is healthy
Checked - MMA inside the VM with no error .Running fine.

But still i don't see heartbeat recieve in log analytics.

I see test cloud connection failure but same failure i see on other VM but there it is reporting the heartbeat and alerts fine without any issue

Please help

Answer 1

I suggest you to try the following query and if it works well, create a custom alert rule with the query

Go to Log Analytics Workspace > Logs > Run the following query
The following query shows the azure virtual machine with less than 100GB disk

InsightsMetrics  
| where Name == "FreeSpacePercentage"  
| summarize arg_max(TimeGenerated, *) by Tags  
// arg_max over TimeGenerated returns the latest record  
| project TimeGenerated, Computer, Val, Tags  
| where Val < 100  

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Answer 2

Hi Coolprash,

Do you have any logs showing up in the disk's Activity Log? If not, then you shouldn't expect to see anything in log analytics.

Maybe take a step back and please verify this is how you configured logging?

Azure VM > [your disk] > Activity Log > Export Activity Logs > + Add Diagnostic Setting

Answer 3

Hi there,

Are you sure that you MMA is configured correctly and it's reporting to a right Log Analytics workspace? Can you compare workspace ids on both Virtual Machines?
You can check it in Control Panel