My azure virtual machine personal info IP data crons are automatically deleted from crontab -e. can you please help me in this?

Question

My azure virtual machine personal IP data crons are automatically deleted from crontab -e. can you please help me in this?

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Answer 1

Hello @Prakash Patil It sounds like you're having an issue where your cron jobs are unexpectedly disappearing from your Azure VM. Here are a few potential causes and solutions to consider:

 1. If your VM is configured for auto-shutdown, it may shut down during off-hours and, upon restart, certain processes might not be restored, including your crontab jobs. To check if this is the case, you can look into your VM's auto-shutdown settings. Here’s how to do it. Sign into Azure portal and navigate to your virtual machine and check the "Auto-shutdown" settings under the Operations section.    - Ensure that the auto-shutdown times are set appropriately.

 2. Azure may perform scheduled maintenance on your VM, which could affect the crontab functionality. It's advisable to check if any scheduled events are affecting your VM. You can query for scheduled events using the API available through the Azure Metadata Service.

 3. Sometimes, if the Azure Linux VM agent fails to run, it may not process your extensions properly, which might lead to issues like this.

Check for any errors related to your VM agent. If your user account lacks the necessary permissions to modify the crontab, it may lead to unexpected behavior. Ensure you have the right permissions.

 5. If your system is in a temporary state due to maintenance or errors, that might affect services running on it. Rebooting the VM might help in such cases.

  Microsoft reference List: -

1. Auto-shutdown a virtual machine https://learn.microsoft.com/en-us/azure/virtual-machines/auto-shutdown-vm?wt.mc_id=knowledgesearch_…
2. Azure Metadata Service: Scheduled Events for Linux VMs https://learn.microsoft.com/en-us/azure/virtual-machines/linux/scheduled-events?wt.mc_id=knowledges…
3. Azure Linux VM extensions stop running https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/linux/extensions-stop-running…
4. Troubleshooting tips for administrative actions on Azure VMs https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/troubleshooting/) I hope this helps! If you have more details to share, I'd be glad to assist further.