How odd, in 2.3 we already were using omshell to do this stuff (it was one of the changes from 1.x to 2.0). Perhaps I can look at the complexity of stuff pushed in...
That said, as a perhaps more further flung hypothetical future, what would
people say to a scheme where dhcp does have to exist and serve some leases
to facilitate PXE, but doesn't necessarily have to serve the 'right'
addresses as the deployment ignores DHCP and goes to static if node is
configured with a static address, instead of today where we push the static
information into DHCP. It's a concept I'm exploring at the moment. The
biggest downside I can think of is that you'd probably want to allocate a
bigger dynamic range, but that could be outside of the 'production' subnet
entirely (or use IPv6, which I also hope to assure can work given adequate
firmware support). In such a world, dhcp could be either managed by xCAT
or externally curated without care about PXE directives or just slapped
down with little thought and a generous dynamic range. I was primarily
thinking about cases where xCAT curated dhcp is inconvenient, but these
cases could be sped up as well.
From: Russell Jones <russell-l...@jonesmail.me>
To: xcat-user@lists.sourceforge.net
Date: 02/25/2014 12:13 AM
Subject: [xcat-user] Restarting xcatd insanely slow with DHCP lease
generation
Hi all,
We are noticing that with a service node that is responsible for around
5000 nodes, restarting xcatd takes over an hour and a half due to how
long it takes to generate the dhcp.leases file. This appears to be tied
to how slow omapi is. In xCAT 2.3, it only took about 20 minutes to
restart xcatd / regenerate the leases file.
Is there a way of going back to the old method of handling DHCP leases,
or a way of significantly speeding this up?
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