Alert action should shut down VM, it doesn't

Question

Alert action should shut down VM, it doesn't

Regula Gerber 0

Sep 5, 2024, 7:49 AM

We have an alert rule that monitors the CPU usage of a VM and when it drops below a certain usage, shuts down the VM. – This worked well for a while, but then started working only sometimes. Although the rule was triggered, it didn't shut down the VM. The automation account does have the virtual machine contributor role on the VM.

Pranay Reddy Madireddy 3,925 Reputation points Microsoft External Staff

Oct 17, 2024, 4:52 PM

Hii Regula Gerber

Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.

Check that the alert rule is still correctly set up with the right thresholds and conditions. Changes in workload can affect CPU usage and cause the rule to trigger unexpectedly. Check that the action group linked to the alert rule is set up correctly. verify the runbook or action to shut down the VM is properly defined and turned on.

If you are using a runbook to shut down the VM, check the logs for errors. Make sure the runbook is published and not in draft mode.

Check that the automation account has the right permissions. Even if it has the "Virtual Machine Contributor" role, ensure it has access to the resource group or subscription as needed.

check the logs for the alert rule and the automation runbook. They can show if the shutdown command was sent and if there were any errors.

Run the shutdown runbook manually to see if it works by itself. This will help you figure out if the issue is with the alert rule or the automation.

If many alerts are going off at once, you might hit rate limits. Check if there's anything slowing down the action from running. Change the alert threshold for a while to see if it works differently. This can help you find out if the problem is with the threshold settings. Look at the Azure Service Health dashboard to check for any ongoing problems.

For reference, please review this documentation: - https://learn.microsoft.com/en-us/azure/azure-monitor/alerts/alerts-manage-alert-rules
https://learn.microsoft.com/en-us/azure/automation/manage-runbooks
https://learn.microsoft.com/en-us/azure/automation/automation-create-alert-triggered-runbook
https://learn.microsoft.com/en-us/azure/azure-monitor/alerts/alerts-dynamic-thresholds

If you have any further queries, do let us know.

If the answer is helpful, please click "Accept Answer" and "Upvote it".
Pranay Reddy Madireddy 3,925 Reputation points Microsoft External Staff

Oct 18, 2024, 3:44 PM

Hii Regula Gerber
If you had a chance to see my comment to your question. If it was helpful, please click "Upvote" on my post let us know Thank you...!
Pranay Reddy Madireddy 3,925 Reputation points Microsoft External Staff

Oct 21, 2024, 10:32 AM

Hii Regula Gerber
If you had a chance to see my comment to your question. If it was helpful, please click "Upvote" on my post let us know Thank you...!