@vinay kumar Very late to answer but this may help others.Can you please post where you stand with your cluster now? Is it advisable to have Ambari server and name-node on the same node? Ambari being a administration tool is recommended to be on Edge node(if you configure one). Even if we handle the name-node disaster using HA enabled for name-node. As Ambari don't have HA. How do we handle the situation, if a node with Ambari server install go down ? While you work on restoring Ambari service,the individual services grouped into Ambari are accessible with their corresponding port numbers. Is it advisable to have a edge node ? What are the advantages of having it ? Edge node is usually neglected in design discussion but it is recommended to have as -it ensures less load/resource competition to name node as client applications & admin tools are usually configured to run here. -They act as a staging area during data transfers in & out of cluster. Can edge node have different OS than the cluster OS ? I think that its not possible to have edge node with different version of OS as the clients need to installed in it. But the situation is that, we are using Red hat 7 for cluster and we want to use HUE. Hue being incompatible with Red hat 7, only option we can think of is, having an edge node with Cent-OS 6 and installing hue in it. Is there any other way to achieve this ? Edge nodes usually have different H/W requirements than master/slave nodes so I think it can be done(I'm not sure) ... View more