Former (recovering?) Exadata user here. I'll go as far as to say that configuring a best-practices RAC cluster is easier than configuring a best-practices MySQL

Former (recovering?) Exadata user here. I'll go as far as to say that configuring a best-practices RAC cluster is easier than configuring a best-practices MySQL cluster. RAC solves some additional problems, like discovery and load balancing, that MySQL kicks out to the user (e.g. you have to manage DNS and run a tool like ProxySQL separately).