Hello @netapp1 ,   thank you for your deep dive into the CDH6.x clusters CM Express version's 100 nodes limitation.   The intent from Cloudera is to limit Cloudera Express 6.x usage to 100 nodes. The implementation on how it was enforced from a User Experience point of view is different between minor versions (e.g. 6.0. vs 6.1. vs 6.2.). It means that earlier versions might let you install the agents across the nodes and once the installation completes it's blocks most of the functionalities until you decrease the number of nodes to 100.   We recognised that it would be best to block installation until the nodes are not exceeding 100 nodes and in later version it's been gradually improved.   Hence the discrepancy between the descriptions in the documentation.   In short: 100 node limitation is enforced across Cloudera Express 6.x versions.   Please let us know if we addressed your enquiry on this topic by pressing the "Accept as Solution" button, which helps other members to find the answer of a similar question.   Thank you: Feren ... View more