If I may interject, it is more "secure" to create a standard user account
(call it cdhadmin or something) and place it in the admn group inside
/etc/group and then make sure this group can use SUDO commands without
being prompted for a password.

Then you provide the standard user account to the manager.

This leaves an "audit trail" that you can track in case somebody gets a
hold of your password (especially if you offload your sylogs off the server
in real-time).


On Thu, Dec 13, 2012 at 12:35 PM, Nafaa Boutefer wrote:

Thank you Adam this was very helpful.

On Thursday, December 13, 2012 12:53:08 PM UTC+1, Adam Smieszny wrote:

Hi Nafaa,

This means that each host in your cluster should have SSHD running on the
same port - usually 22. If you start sshd on ubuntu without any
modifications to /etc/ssh/sshd.conf (going from memory here...), it will
use this port by default.

Another very helpful thing to make installation easy, is to have the
'root' password on each machine in your cluster be the same. We will use
that in the CM installer to push out the packages and install them on your

Hope this helps

On Thu, Dec 13, 2012 at 5:14 AM, Nafaa Boutefer wrote:


To setup a hadoop cluster following the path A (automated way) in the
cloudera manager installation guide, it is required a 'Uniform SSH access
to cluster hosts on the same port from Cloudera Manager Server host.',
so what dose this means? and how to do that on ubuntu 12.04? thank you.

Adam Smieszny
Cloudera | Systems Engineer | http://www.**linkedin.com/in/adamsmieszny<http://www.linkedin.com/in/adamsmieszny>

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