VM Linux - Agent status not ready - Unable to SSH - Restart button missing

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VM Linux - Agent status not ready - Unable to SSH - Restart button missing

Sandy Gunawan 31

Hi,

I have a Linux VM based on Ubuntu 20.0.4 LTS. Previously in first 3 months, there is no issue with the VM.
But now we have an issue (in chronological):

Issue Agent is not ready
When it happens, we can not connect through SSH.
Previously, we restart the VM, then we can connect again. But then sometimes later, this issue is raised again.
From the article , this relates with agent 'walinuxagent'.
We're trying to solve this issue by attempting to SSH the VM. But now, after restart, then the status of Agent is not ready is showing up, and then the button of Start, and Restart of VM is disabled.
And still unable to SSH.
Try to stop the machine, and start the VM.
The VM is up and running, but the agent is not showing up on the Portal. even after waiting for 20 minutes.

Now we can not connect to SSH as well.
How can we connect to SSH for this VM ? Previously when the VM is up and running the status agent is ready ,we can SSh this VM. How can we solve the walinux issue if we can not connect to SSH?
Any body can you please help ?

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Answer 1

Jackson Martins 10,606 MVP Volunteer Moderator

Hi @Sandy Gunawan
Try to reinstall VM agent, you can use serial console and connect to Linux directly. After connect you can run:

systemctl stop walinuxagent
waagent -deprovision -force
apt-get remove --purge walinuxagent
rm -rf /var/lib/waagent

then, install the latest package version, following the instruction from the document below:

reference: https://learn.microsoft.com/en-us/azure/virtual-machines/extensions/update-linux-agent

Connect via serial console to fix the connection.
reference: https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/serial-console-linux

below article that helps you find and correct the problems that occur due to Secure Shell (SSH)
Reference: https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/troubleshoot-ssh-connection

Get in touch if you need more help with this issue.

--please don't forget to "[Accept the answer]" if the reply is helpful--

Sandy Gunawan 31 Reputation points

2022-08-09T09:08:57.403+00:00

Hi martins,

On general , it works, but i still have 1 question :

If we restart the VM, then the status of walinuxagent is in inactive state.
How can we set this walinuxagent automatically start when the VM started?
THank you
Jackson Martins 10,606 Reputation points MVP Volunteer Moderator

2022-08-09T09:34:28.697+00:00

Hi @Sandy Gunawan
Glad it worked!

By default after install, it is already enabled at startup.

But you can check or enable again like:

systemctl enable waagent

Please "[Accept the answer]" if the information helped you. This will help us and others in the community as well.
Sandy Gunawan 31 Reputation points

2022-08-09T09:55:19.417+00:00
Hi martin,

On my VM it's using : sudo systemctl enable walinuxagent

Thank you a lot for the help...
Just for note :

I should keep the /var/lib/waagent/ovf-env.xml files instead of remove all the files under directory
(rm -rf /var/lib/waagent)., since the connection to my storage account is in those file.

This command however changes the hostname of VM become local-host, not sure why. I need to manually change the hostname

On my case, this issue is also causing we can not mount the StorageAccount , i also don't know why.

Thank you brother...

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VM Linux - Agent status not ready - Unable to SSH - Restart button missing

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