Hadoop IP Tables configuration

[Edward Capriolo <ed...@gmail.com>]

All,

I always run iptables on my systems. Most of the hadoop setup guides I
have found skip iptables/firewall configuration. My namenode and task
tracker are the same node. My current configuration is not working as
I submit jobs from the namenode jobs are kicked off on the slave nodes
but they fail. I suspect I do not have the right ports open, but it
might be more complex, such as an RPC issue.

I uploaded my iptables file to my pastebin. This way I do not have to inline it.

http://paste.jointhegrid.com/10

I want to avoid writing a catch all rule, or shutting down entirely. I
would like to have 1-3 configurations in the end for each hadoop
component. It anyone helps me out I will contribute this to the hadoop
wiki.