Moving sciebo to kubernetes: Lessons learned and practical considerations for productive workloads

<!--HTML-->At Sciebo we migrated the first half of our productive ownCloud instances, serving over 200k customers across the state of North Rhine Westphalia at universitary institutions, to our new on-premise kubernetes platform. Last year we presented an overview of the rough architecture of the platform and promised some more insights for this year's CS3. ;-) In this presentation we - give a quick reminder consisting of little lies how to conceptualize all this kubernetes stuff - discuss some choices we made in regard to our tooling - mention some patterns and anti patterns we identified in the wild - some practices and mantras that served us well - address the elephant in the room and talk about some things we did roll on our own in order to move our already existing services to the cloud - the road ahead