Azure Linux VM not connecting after installing Docker.

ABHISHEK KUMAR JHA 0

Hi.

I am unable to connect to Azure Linux VM after installing Docker.

Port 22 for SSH is allowed in NSG.

I have to restore the VM to be able to connect.

Note: VM is behind Firewall

Bobai Kato 25 Reputation points

2023-07-28T11:22:19.21+00:00

What do you mean not connecting? Can you give more details please?
ABHISHEK KUMAR JHA 0 Reputation points

2023-07-29T18:54:25.98+00:00

I am unable to connect to VM via SSH after installing Docker.

In fact the VM stops responding midway through Docker installation.

After I restore the VM to a point before Docker was installed, the VM starts accepting connections through SSH.

I came to know that it has something to do with iptables.

Note : VM is behind firewall.
Bobai Kato 25 Reputation points

2023-07-29T19:43:52.3733333+00:00

Do you have an understanding of the root cause of the issue? If you do, that's reassuring to hear.
ABHISHEK KUMAR JHA 0 Reputation points

2023-07-30T11:04:17.9266667+00:00

I just know that Docker modifies iptables and this does not allow us to connect to VM via SSH.

how do I resolve this?
Bobai Kato 25 Reputation points

2023-07-30T11:21:47.14+00:00

Could you kindly confirm the operating system you are currently running?
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Bobai Kato 25 Reputation points

2023-07-30T19:25:53.67+00:00
Please attempt this solution and inform me of your results.

Before installing a new Docker installation, please remove any older installations. Removing previous Docker versions will not lose the images, containers, volumes, and networks you have created.

sudo apt-get remove docker docker-engine docker.io containerd runc

sudo apt update -y

sudo apt install docker.io -y

sudo snap install docker

sudo systemctl status docker
ABHISHEK KUMAR JHA 0 Reputation points

2023-07-31T05:31:00.1166667+00:00

I cannot remove docker as the VM disconnects while docker installation is in progress. It becomes unresponsive at around 80%, after which no matter what I do, VM doesn't connect.

I then have to restore the VM to a previous date and it starts working fine.
Bobai Kato 25 Reputation points

2023-08-06T13:02:08.7866667+00:00

Could you try repeating the process once more? If it becomes unresponsive, please open a new terminal and use SSH to access it while leaving the previous method to continue.

Additionally, you have the option of creating a new temporary virtual machine and installing Docker using the instructions provided above. This will help you determine if you encounter the same issue. If not, you can then proceed with a storage swap.

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Azure Linux VM not connecting after installing Docker.