Your best bet is to Google around a bit on this -- I'm not an expert in this
stuff. You generally want to ensure that functionality such as iptables,
firewalls, or other filtering solutions are either disabled or extremely
permissive between your cluster nodes, etc. Specifically, it's ok to have
iptables, firewall, or filtering solutions running on your cluster (e.g., if
your cluster is on a public network), but only as long as you allow all
TCP/UDP communication to be unrestricted within your cluster.
If your cluster is on a private cluster and/or you have no other security
issues, you might want to consider disabling
iptables/firewalls/filters/whatever. But be sure to check with your cluster
administratr and network administrators first.
On 8/3/06 7:32 PM, "Zubair Anwar" <zubair.anwar_at_[hidden]> wrote:
>> Do you have any firewalling / port blocking software running on this node?
>> You need to allow completely arbitrary TCP and UDP connectivity between
>> the
>> nodes.
>
>
>
> I am not running any firewall on the node. However, I am not sure how to
> check this and allow for completely arbitrary TCP and UDP. Any suggestions?
> _______________________________________________
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--
Jeff Squyres
Server Virtualization Business Unit
Cisco Systems
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