Re: Required host migration (Sourceware)

[Christopher Faylor <cgf-use-the-mailinglist-please@sourceware.org>]

On Thu, Oct 01, 2009 at 03:05:48PM -0400, Matthew Galgoci wrote:
>> >> Work required:
>> >> * reconfigure networking on systems (IP address/netmask/gateway will change)
>> >> * reconfiguration of services on system (if necessary, due to new IPs)
>> >> * updates to DNS (due to new IPs)
>> >
>> > Can the new IP addresses be provided in advance?  Would it be possible
>> > to configure the machines in PHX1 with (temporary) dual-homing to
>> > actually exercise the new addresses, so as to give us a transition
>> > period?
>>
>> We will know the new network details in advance of the move, but I don't
>> think its possible to do the dual-homing. I've cc:ed mgalgoci who can
>> provide a definitive answer.
>
>Setting up the new netblock and then moving it would be somewhat of a pain.
>I would rather see us expend our effort on the new setup and suggest we take
>one of the lighter used servers and migrate it before the other two and setup
>some preliminary services on it. Make sense?

Actually, no, I don't think so.  The other two servers are actually very
underused.  Frank might correct me but I think we probably wouldn't
notice if they went down right now.

What would be great is if, in the process of this move, we could get what
we'd originally hoped for when sourceware was upgraded a few years ago -
two identical (or nearly identical) machines.  We could use one for the
main system and one for backup, allowing us to hot swap between the two
if needed.

If we could have one of the systems set up at the new site ahead of time
we wouldn't even need 48 hours down time.

cgf