Re: Migration of Gerrit to new Infrastructure - DOWNTIME planning

On Mon, Nov 10, 2014 at 6:58 AM, Alexander Werner
<alex@documentfoundation.org> wrote:
> Hi all,
>
> good news, everyone! Our new infrastructure has proven to be stable and reliable, so the time has 
> come to migrate our gerrit instance to the new platform.
> This brings quite a nifty benefit: The VM gerrit is running in will then be highly available with 
> redundant storage and seamless automigration between servers.
> But the downside is that the migration will take some time, in the case of gerrit the pure 
> copying will take about 10hours, starting and reconfiguring the VM afterwards only 10-20Minutes.
> So a downtime of about 10.5h needs to be planned.
>
> My proposal is to start the copying of the vm on Saturday, 29 November, 0900UTC. The downtime 
> will then end around 1930UTC on the same day.
> I will try to fix the date on Saturday, 15 November, so please comment until then.

Thanks. Sound good to me.
Let's remember to send email reminders to the ML just before and just
after it, and put that info in irc's topic of #libreoffice-dev

I'll be around most likely for the end of it (but prolly not at the start :-D)

moggi, vmiklos, bjoern... you may want to keep an eye on the various
'Bots' to irc/bugzilla etc...

Norbert


PS alex: Let's make _sure_ to keep the rsa host key of the gerrit vm
while migrating :-)
PS2: to all: if your known_host happen to have the ip and not the
hostname for gerrit and/or if you have some extra security that do
track the ip anyway, you may have to tweak things after the migration
as, obviously, the IP of the gerrit server will change.