Accidentally modified permissions of .ssh

[Anja Kalaba]

Hello,

I was meaning to change permissions of some repos in the home directory, but I accidentally did 

`chmod 777 -R .`

thus changing the .ssh directory's permissions too (from 700 to 777). At least this is the reason I believe I'm seeing the issue below.

Currently I'm getting `aka...@ms1120.utah.cloudlab.us: Permission denied (publickey).`

when I attempt to ssh into client-0-0 in my experiment. All other nodes are fine to ssh into.

I was hoping someone might be able to assist me? I have data on there that I'd like to retrieve, so I don't just want to call reload. reboot also didn't seem to work. I'm unsure if there's another way to access the machine besides ssh? I also don't see how I can modify the permissions of .ssh without accessing the machine... Any help would be appreciated.

Link to experiment: https://www.cloudlab.us/instantiate.php?profile=4351984f-9362-11ed-b318-e4434b2381fc&rerun_instance=b3e42cbd-cc5c-11ef-af1a-e4434b2381fc

Thanks,

Anja

[David M Johnson]

On 1/12/25 20:49, 'Anja Kalaba' via cloudlab-users wrote:
> Hello,
>
> I was meaning to change permissions of some repos in the home directory,
> but I accidentally did
> `chmod 777 -R .`
> thus changing the .ssh directory's permissions too (from 700 to 777). At
> least this is the reason I believe I'm seeing the issue below.
>
> Currently I'm getting `aka...@ms1120.utah.cloudlab.us

> <mailto:aka...@ms1120.utah.cloudlab.us>: Permission denied (publickey).`

> when I attempt to ssh into client-0-0 in my experiment. All other nodes
> are fine to ssh into.
>
> I was hoping someone might be able to assist me? I have data on there
> that I'd like to retrieve, so I don't just want to call reload. reboot
> also didn't seem to work. I'm unsure if there's another way to access
> the machine besides ssh? I also don't see how I can modify the
> permissions of .ssh without accessing the machine... Any help would be
> appreciated.

Hi. I fixed up your .ssh dir perms. However, you had also installed a
package that dragged in NetworkManager, and I think this was most likely
responsible for the node becoming unreachable (see for instance
https://groups.google.com/g/cloudlab-users/c/B6rNj7Vhltk/m/rwkHf_kwAgAJ).
I disabled NetworkManager on this node and rebooted it; should be fine
now, assuming I got the .ssh perms right.

> Link to experiment:
> https://www.cloudlab.us/instantiate.php?profile=4351984f-9362-11ed-b318-e4434b2381fc&rerun_instance=b3e42cbd-cc5c-11ef-af1a-e4434b2381fc <https://www.cloudlab.us/instantiate.php?profile=4351984f-9362-11ed-b318-e4434b2381fc&rerun_instance=b3e42cbd-cc5c-11ef-af1a-e4434b2381fc>
>
> Thanks,
>
> Anja

David