How to add ssh keys in a running cluster?

[Patrick Heneise]

Hi there,

I deployed a cluster with 3 CoreOS machines for a customer. The cluster was in development for a while and has been set up with cloud-config, where I defined my ssh keys from my machines:

ssh_authorized_keys:
  - ssh-rsa ...

Now I want to give the customer and operations the possibility to log in to the cluster with fleetctl to at least restart etc.

How is this possible?

cat .ssh/authorized_keys

says:

# auto-generated by /usr/bin/update-ssh-keys

but there's no info on how to add ssh keys to the machines.

Thanks

Patrick

[anton....@coreos.com]

Dear Patrick,

You can put additional ssh keys into this directory: /home/core/.ssh/authorized_keys.d and then run update-ssh-keys. It will update /home/core/.ssh/authorized_keys file with keys located inside /home/core/.ssh/authorized_keys.d directory.

Regards,

Anton

[anton....@coreos.com]

In addition you can also follow this doc: https://coreos.com/os/docs/latest/adding-users.html

On Wednesday, October 7, 2015 at 6:52:16 PM UTC+2, Patrick Heneise wrote:

[Patrick Heneise]

Thanks Anton! Not looking to create a user, just giving access to core.