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On Mon, Jan 31, 2005 at 10:04:37AM -0500, Prescher, Mike wrote:
> Mini-HOWTO
>
> "3.5.3. Upgrading LVS
>
> The only way is to compile a new kernel, reboot, then compile/install
> the matching ipvsadm, as if you were doing an install from scratch. You
> can't upgrade in place, you have to bring the director down. "
>
> Q1: Is this still true today?
>
> Q2: Any plans for hot upgrade capability?
Ok, here is the deal.
LVS is part of the kernel. You can compile it as modules or into the
kernel itself. In the case of the former, you can change these modules
at any time, though LVS gets reset and any establised connections will
be broken - though this can be mitigated by synchonising to a backup
linux director. However, if you need to upgrade some other part of the
kernel, which is more common than just upgrading LVS, then you need
to reboot. This includes a situation where updating LVS relies on
a change somewhere else in the kernel.
--
Horms
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