Setting up password-less ssh on CentOS

First set the hostname on both machines:

hostnamectl status

hostnamectl set-hostname newhostname

Add both hostnames to /etc/hosts on both machine

On source machine:

ssh-keygen

ssh-copy-id -i ~/.ssh/id_rsa.pub remote-host

On target machine:

restorecon -Rv ~/.ssh

ssh remote-host

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