Hello there,
I have quite extensive experience with linux systems/servers. I've been working for more than 6 years for different web hosting companies and now I'm working as a Senior Linux Engineer/Administrator. I'm familiar with a lot of monitoring tools like cacti, nagios, icinga2, zabbix, pingdom, librenms, ganglia etc.
If you have questions, please let me know.
Regards,
Bogdan Stoica