We'll try to monitor a maximum via check_by_ssh
ssh-keygen
Copy the key
ssh-copy-id nagios@dns.fortier-family.com ssh nagios@dns.fortier-family.com
useradd -m -d /home/nagios -s /bin/bash -p nagios nagios passwd nagios
check /etc/ssh/sshd_config for:
PasswordAuthentication yes