Accessing Archer2 from a new laptop

Dear CMS support team,

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

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…??


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.