Hello 

I am new in Cloudera Hadoop and I am trying to install Cloudera in 6 servers. (My plan is to use 2 namenodes and 4 datanodes as startup)

I installed following packages  

namenode 

hdp1:~] yum list installed | grep cloud
cloudera-cdh.x86_64 5-0 @/cloudera-cdh-5-0.x86_64
cloudera-manager-agent.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
cloudera-manager-daemons.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
cloudera-manager-server.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
cloudera-manager-server-db-2.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager

second  namenode

hdp2:~>yum list installed | grep cloud
cloudera-cdh.x86_64 5-0 @/cloudera-cdh-5-0.x86_64
cloudera-manager-agent.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
cloudera-manager-daemons.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
oracle-j2sdk1.7.x86_64 1.7.0+update67-1 @cloudera-manager

one of the datanodes, 

hdp4:~]yum list installed | grep cloud
cloudera-cdh.x86_64 5-0 @/cloudera-cdh-5-0.x86_64
cloudera-manager-agent.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
cloudera-manager-daemons.x86_64 5.4.0-1.cm540.p0.165.el6 @cloudera-manager
oracle-j2sdk1.7.x86_64 1.7.0+update67-1 @cloudera-manager

I configured manager-agents to work with hdp1 server, I started scm db and server in hdp1 server and then cont.

When the GUI tries to inspect hosts for cluster installation I got following errors. ( I connected to hdp1 server from HTTP browser )

--> hdp1.vodafone.local: Inspector did not run successfully.

--> 6 hosts are reporting with NONE CDH version

--> There are mismatched versions across the system, which will cause failures. See below for details on which hosts are running what versions of components.

Regarding to last error it gives some components' version in 2 different groups but all the components have same version

So any idea about this errors ?

How can I fix them?

Thanks