A week of an on-call ops engineer, talk given on WebCampZG, October 2017 (https://2017.webcampzg.org/talks/ops-i-did-it-again/) Summary: Operations part of any Web based application or service is probably the lowest rated and generally understated positions everywhere. That is, until something breaks or isn't working properly. To give you a glimpse of doing this in a high-availability high-performance surroundings I'll be covering few general cases of what to do and what NOT to do so you don't have to develop a spider-sense in what state is production, but rather enjoy a good nights sleep while everything is all green.