Hi team,I tried copying public key from local to remote server authorized keys but it's not working

Akhilreddy11 · December 30, 2024, 2:50am

REMOTE_USER=azureuser
REMOTE_HOST=40.112.140.45
KEYS_DIR=/root/.ssh/

for key in $KEYS_DIR*.pub; do
cat $key | ssh $REMOTE_USER@$REMOTE_HOST “mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys”
done

ssh $REMOTE_USER@$REMOTE_HOST “chmod 700 ~/.ssh && chmod 600 ~/.ssh/authorized_keys”

Srikanth_Reddy · December 30, 2024, 4:36am

I would suggest to first try it directly from CLI, instead of using a script.

Akhilreddy11 · December 30, 2024, 6:50am

I tried using cli it doesn’t work out share your insights

Srikanth_Reddy · December 30, 2024, 7:52am

Can you share the complete question?

As per my understanding, the task is to copy public key of root user onto to another vm, so that you will be able to ssh with password.

did you test, if you were able to ssh after adding the public key?

raymond.baoly · December 30, 2024, 3:31pm

Hi,

Please share the Azure level and task number, and I’ll check it and provide feedback.

Akhilreddy11 · January 1, 2025, 5:25am

The Nautilus DevOps team is working on setting up secure SSH access for their virtual machines in Azure. One of the requirements is to add the SSH public key of the root user from the Azure client host (landing host) to the devops-vm Azure VM’s authorized_keys file. This ensures secure and password-less SSH access to the VM.

Task Details:

VM Details:

The VM is named devops-vm and is running in the East US region.
You need to add the root user’s SSH public key from the Azure client host to the authorized_keys file of the VM’s root user.
The SSH public key of the root user on the Azure client host is located at /root/.ssh/id_rsa.pub.

Public Key Addition:

Copy the public key located at /root/.ssh/id_rsa.pub on the Azure client host to the authorized_keys file of the root user on devops-vm.
Ensure that the proper permissions for the .ssh folder and authorized_keys file are set on the VM.

Verification:

After adding the public key, make sure that you are able to SSH into the devops-vm VM from the Azure client host without needing a password.

Important Notes:

Ensure that the VM is up and running before attempting to SSH.
You may need to adjust the firewall or security group rules for the VM to allow SSH access.

**** for this they already deployed linux vm for this task and it has public key having in it and out task is copy public key from local to linux vm
Hi team , please share your insights

Srikanth_Reddy · January 1, 2025, 5:53am

Your second screenshot says that you have edited the file /home/azureuser/.ssh/authorized_keys at this location.

while adding the public key to the authorized_keys file, you need to switch to root user.
You need to add the public key to the file /root/.ssh/authorized_keys at this location and you might need to edit sshd_config file if needed.

can you ping me on discord instead? my discord id: srikanth_47152