Cannot SSH into the Server anymore.

Question

Cannot SSH into the Server anymore.

Jamie Na 1

Hello.

I was able to SSH into my VM linux server just fine until yesterday but not anymore. I do believe it is due to something I did.

The 2 things that I did which might be the cause:

1) My tried to change the mysql.cnf and my.cnf files but it wasn't giving me permission.

2) I SSH'd and input commands to give me access to the /etc folder and subfolders. After this action, I am unable to access.

Now that I can no longer SSH into the server, I am unable to undo what I did or even backup the files to put into a new VM.

Please help me.
Thank you very much.

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Answer 1

cheong00 3,491 Volunteer Moderator

If your VM is built with default install image, see if you can access via Azure Serial Console for Linux.

I think in some point of time, daemons like sendmail will shutdown and refuse to start if it find out your config folder have write access for everyone. (In my case it's some script on FTP server to change access for everyone in recycle bin, but someone deleted the recycle bin folder, and the script didn't check the existence of folder, to it begin to set 777 permission for everything - plain disaster) Not sure if it is your case.

Jamie Na 1 Reputation point

2021-01-26T08:30:06.887+00:00

Hi thank you for the input.

I don't think I have access to the Azure Serial Console for Linux.
And I don't see any options for enabling boot diagnostics for the account that has all of my files in it..

Is there any way that I get reset the permissions on my server?
Without having to SSH.
cheong00 3,491 Reputation points Volunteer Moderator

2021-01-27T01:47:29.947+00:00

Try "Reset configuration only" here to reset config for SSH and see if it can cure your problem.

"Reset SSH Configuration" command in your Azure CLI also worth a try. Here's how you get Azure CLI.

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Cannot SSH into the Server anymore.

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