Accessing Archer2 from a new laptop

1

Dear CMS support team,

I’m trying to login to Archer2 from my new laptop.
I copied the ~/.ssh/id_rsa_puma and ~/.ssh/id_rsa_puma.pub files to the .ssh directory of the new laptop. But I kept getting the error:
dd643@HC97NYQNVN ~ % ssh -Y -i ~/.ssh/id_rsa dd643@login.archer2.ac.uk
Load key “/Users/dd643/.ssh/id_rsa”: invalid format
dd643@login.archer2.ac.uk: Permission denied (publickey).

This is the output for ls -haltr .ssh in my new laptop:
-rw------- 1 dd643 staff 1.8K 25 Jun 14:18 id_rsa_puma
drwx------+ 18 dd643 staff 576B 25 Jun 14:49 …
-rw-r–r-- 1 dd643 staff 401B 25 Jun 14:53 id_rsa_puma.pub
-rw-r–r-- 1 dd643 staff 101B 25 Jun 14:54 known_hosts

I’m not sure about the error and how to resolve it. Could you please help?

Thank you in advance.
Deepashree

2

Hi Deepashree,

To access ARCHER2 you need to use the ssh keys you created when you registered for ARCHER2 and that you uploaded to your SAFE account.

id_rsa_puma I presume is an old PUMA ssh key…??

Regards,
Ros.

3

Hi Ros,

Thank you for your reply.
I couldn’t recall any of the steps I followed to access Archer2. I’m sorry about it. Is there a way to get the new id_rsa_puma file?

I couldn’t find any other ssh keys in my old laptop’s ~/.ssh folder.

(I’m not sure if it’s helpful, but after logging into Archer2 I use ‘ssh puma2’ and I’m currently running a few experiments in puma2. So maybe the files are okay(??))

Thanks again.
Deepashree