Hi, as usual, it depends of what you need... The cloudera VM has 1 node with everything and it allows you to see it... A quite simple cluster could have 2..3 MVs for CM & masters and at least 3 VMs for Workers. As I said and as you can imagine, it depends what you want to test on it Believe me, you really need a Cloudera admin to get what you want... In another thread refered to this blog I hope, this will help you ... View more