ssh key upgrade

[RolandK]

i need to upgrade ssh keys for security reason (don't currently meet required key length) and i wonder, whyh on my pve cluster with 3 nodes, i have

root@pve1:/etc/pve# ls -la /root/.ssh/authorized_keys
-rw------- 1 root www-data 6330 Jul 3 10:38 /root/.ssh/authorized_keys

root@pve1:/etc/pve# ls -la /etc/pve/priv/authorized_keys
-rw------- 1 root www-data 8348 Apr 15 10:32 /etc/pve/priv/authorized_keys

and on my single node machine, i have
# ls -la /root/.ssh/authorized_keys
lrwxrwxrwx 1 root root 29 Nov 29 2022 /root/.ssh/authorized_keys -> /etc/pve/priv/authorized_keys

# ls -la /etc/pve/priv/authorized_keys
-rw------- 1 root www-data 2122 Jun 12 16:19 /etc/pve/priv/authorized_keys


what is the correct way to replace/upgrade ssh keys in pve cluster ?