Hello Ravindranath,

About what I could understand of Ambari's design, iptables can block some ports used between server and a client (agent nodes) during the client's registration step, as well the heartbeat communication during the execution of cluster. Also, there is the port of the web UI provided by ambari-web on server, and there are some portds (I never remember the numbers) that Nagios uses to provide some components' web UI on clients.

I guess you can create iptables rules for all these ports on both server and client sides. May be the ambari-server and ambari-agent can check the iptables rules and create them if not running. I was talking with a friend yesterday regarding this "missing feature" - my intention is not create a flame here guys :-D !!!

Now, regarding the SELinux I don't know the restriction it imposes on Ambari, so I can't help you on this - I must study this part :-D.

I hope this help you!
Regards, Paulo.

On 03/27/2013 12:18 AM, Ravindranath Akila wrote:
Actually, how does iptables and SELinux interfere with Ambari? If I know
that, maybe I can look for a workaround. Thanks in advance.

Yours,
   Ravindranath Akila...

On Wed, Mar 27, 2013 at 1:53 AM, Ravindranath Akila
<[email protected] <mailto:[email protected]>> wrote:

    I am tempted to do that or go for a physical firewall on Rackspace
    for 25k per month :-)
    My exposure to shell scripting is bad :-( Where can I grab the code?

    Thanks!

    R. A.

    On 26 Mar 2013 01:44, "Mahadev Konar" <[email protected]
    <mailto:[email protected]>> wrote:

        Hi Ravindra,
          Currently there isnt but it should be a minor change to the
        scripts. Do you want to file a jira and maybe upload a patch? :)
        We could switch it off with a flag option.

        thanks
        mahadev

        On Mon, Mar 25, 2013 at 6:18 AM, Ravindranath Akila
        <[email protected]
        <mailto:[email protected]>> wrote:

            Hello,
               Is there a workaround for disabling iptables and SELinux?
            I'm exploring the options of securing the cluster in the
            cloud without a physical firewall. Any suggestions would be
            great!

            Thanks in advance :-)

            Yours,
               Ravindranath Akila...

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