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List:       webmin-l
Subject:    Re: [webmin-l] cluster webmin servers, fast rpc calls and firewalls
From:       "Jamie Cameron" <jcameron () webmin ! com>
Date:       2008-08-14 0:18:00
Message-ID: 1218673080.22965 () webmin ! com
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On 13/Aug/2008 16:31 Craig White wrote ..
> It seems as though even though I am allowing port 10000 on server #2,
> when I try to 'add' a server to Webmin cluster - even though I can
> connect via 'Webmin Servers' - I can't connect using Webmin Cluster (and
> can't add it) as it seems that the 'clustering' process wants to
> incrementally add to port 10000 (i.e. - each time I try, it bumps the
> number up 1 from 10000 to 10001 to 10002 etc.)
> 
> Is this a combination (cluster/fast rpc/firewalls) that won't work?

The issue here looks to be that Webmin RPC calls use ports 10001 and up
as part of their communication, so if you only allow port 10000 then 
RPC will not work. I recommend opening 10000-10010 in your firewall, and
perhaps even higher if you expect lots of concurrent RPC traffic.

 - Jamie

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