Hi,we switched to Zabbix few years ago for monitoring. This is globally easier to setup and deploy. Contrib is available for server and agent. https://wiki.koozali.org/Zabbixhttps://wiki.koozali.org/Zabbix-agentThere is also a proxy, which has not been ported for SME as no one asked for it. Nagios used to have a contrib on SME but no one has asked for it for years. As we are volunteers, if no one asked and no one help to test and verify some contribs never get ported. This one was a SME 7 contribs. Would need some tender loving care but nothing impossible. nagios 4.4 is available in epel. https://wiki.koozali.org/Nagios