How to configure a jenkins slave. On the slave setup a jenkins
user and add the master SSH public key on the authorized_keys
file.
useradd -m jenkins
su - jenkins -c "mkdir /home/jenkins/.ssh"
su - jenkins -c "chmod 700 ~/.ssh"
su - jenkins -c "chmod 600 ~/.ssh/*"
su - jenkins -c "restorecon -R -v ~/.ssh"
su - jenkins -c "vim /home/jenkins/.ssh/authorized_keys"