Keycloak – Open-source identity and access management interview
I don’t get it. Keycloak feels like some clunky 90s enterprise software and I mean it only in a bad way. 
Had to run it on openshift and it was hell. It’s not really made for containers, clustering is basically impossible, it needs to know it’s default route and I can’t remember the exact issue but found myself patching some obscure startup scripts which templated some XML to start that thing. Can’t recommend but I’d be happy to hear alternatives which are actually modern.