Hi!
I am administrating 50+ Apache(and midleware) servers in an Enterprise environment (daily 1m+ request)...
Beside that, I have a webhosting and developing company since 2010. I am administering many Debian servers used by me, and my customers, including Apache, Nginx, PHP-FPM, MySQL, VPN, DNS, DHCP, etc.
I am almost automated all daily tasks to reduce manual work.
I am working with Linux since 1996... :)