I want to connect from my Mac (terminal) to GCP instance (centos) by running ssh -i new_ssh_key centos@0.0.0.0
and I got the error centos@0.0.0.0: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
All works well till yesterday when SCP command did not worked out so I changed the permissions and probably something went wrong and now I can not connect to centos server at all.
Appreciated any help on this.