Unable to issue query: could not connect to the Host Monitor

[#1]

Hello, I installed the cloudera manager,then I install HDFS through cloudera manager. Wnen I want to see the cluster cpu, disk IO, Network IO status,  the problem occur. 

How can I solve this problem,thank you 

[#2]

Thank You So much..it worked now

[#3]

Hi

As you Mentioned I have skipped the wizard because I lost the connection in between.

Can you please tell me how can i install it.

Thanks

[#4]

I too ran into this issue. I manually started the Host Monitor which allowed that service to start, however I was still plagued with the error message "Cannot have empty version string segment" each time I'd login to the dashboard. Will attempt to do a uninstall and reinstall to see if it clears it up.

UPDATE

A uninstall/re-install seems to have cleared things up. 

[#5]

I tried to Start Host monitor service it is not working.Also I tried to Restart Host monitor service.Also I am getting error for below command I am getting below error.
Connection aborted because of exception :Command Time Out after 150 seconds and Role is starting in red line.

I look at the role logs, stderr logs, and stdout logs -
Error when communicating with server
NullPointer Exception

Query error for following

Cluster CPU
Cluster Network I/O
Cluster Disk I/O