I have been using Nagios extensively to monitor infrastructure that I am interested in for about 10 years now, and each time I build a new system I version the configuration. I am up to Generation 4 now.
I recently renamed my internal LAN domain name. For some crazy reason I'd thought .int was not a public TLD and didn't check at all before using that before the last time I renamed my internal LAN. I had no issues for several years, but I felt with the holidays it was time to move away from this invalid domain internally to something valid.
I've been waiting to add some features to ipquail.com for a while, but the way in which I was handling API endpoints at the moment needed to change before I could accommodate anything fancier -- at the moment I was using simple Server Side Includes ("SSI" in 90's Apache web server terminology) and some mime-type modifications to fake API endpoints. This needed to change.