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Hi Peter,<br>
<br>
A quick brainstorm:-<br>
(a) can you not do something where you deregister them one at a time,
or in batches, on FS1 <br>
while registering them on FS2?<br>
(b) use method 1, but set a short period for re-registration initially,
and then increase it once FS1's<br>
taken down?<br>
(c) use method 1, but take FS1 off the network before taking it down
(e.g. ifdown eth0, route delete default..?)<br>
so that its unregistration attempts don't reach the gateways?<br>
<br>
Cheers --<br>
<br>
Dave<br>
<blockquote cite="mid:49258B88.5090101@gmx.net" type="cite">I have the
following scenario for a 2-server FS system with failover
functionality:<br>
<ul>
<li>I have a number of Gateways registered at FS1</li>
<li>I have another number of Gateways registered at FS2</li>
<li>In case I want to do maintenance on FS1 I would like all
external
gateways to be registered on FS2 and then shutdown FS1<br>
</li>
<li>This is not of a problem if I have only a handful of gateways,
but in our case they're about 10.000<br>
</li>
<li>The goal is to minimze downtime, when I migrate e.g. 5000
gateways from FS1 to FS2</li>
</ul>
<ul>
<li>1st method: The normal way would be to register (via xml-rpc or
socket) the new Gateway on FS2 and then deregister it on FS1. FS1 sends
an unregister (register with expires=0) to the gateway though (after
the register from FS2), so this Gateway unfortunately no longer sends
calls to any of the 2 FS.</li>
<li>2nd method: The other way is to deregister them first on FS1
and
then register them all on FS2. Because deregistering and registering
takes time with ~5000 Gateways (+ we have to ensure that the new
register has to take place after unregister), this results in a
significant downtime.</li>
</ul>
So my question: Is there any way to suppress deregister messages to the
gateway?<br>
<br>
Best regards<br>
Peter<br>
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<br>
<br>
<pre class="moz-signature" cols="72">--
David Knell, Director, 3C Limited
T: 020 8114 8901 F: 020 3002 7257 M: 001 415 630 3031
<a class="moz-txt-link-freetext" href="http://www.3c.co.uk">http://www.3c.co.uk</a> </pre>
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