Mozilla Scheduled Downtime - 2012/04/25 - 09:00-12:00 PST

[Chris Cooper]

The Mozilla IT and RelEng teams need to take a downtime on Wednesday,
April 25th to migrate some services that support the Firefox continuous
integration system to a new data center. The user-facing systems are:

* build API (and builddata)
* clobberer
* OPSI configuration servers for the build farm
* trychooser

The IT team would also like to use the downtime to upgrade some systems
and services to provide better performance and/or scalability, notably:

* re-balancing the ganeti cluster in our scl1 colo
* fixing DHCP in our scl1 colo
* reorganizing our minis and reconfiguring the switch to which are
attached in our mtv1 colo
* upgrading our rabbitmq installation
* deploying a new pair of databases for buildbot
* moving CVS to the new scl3 colo
* upgrading zimbra

The downtime is scheduled for 3 hours, starting at 09:00 PST. The trees
will be closed during that time. We will open the trees and inform
#developers as soon as possible after the maintenance is complete.

As always, please let RelEng/myself know ASAP if there is any reason we
should not proceed with this downtime.

cheers,
--
coop