Tomorrow I'm going to make another attempt at switching us over to a new labs controller host. That won't break anything for running labs instances, but it will probably have some or all of the following effects on wikitech users:
1) Wikitech will go into maintenance mode 2) Wikitech sessions will end and you'll have to re-log in 3) New logins may fail (briefly, if the keystone switch goes poorly) 4) Instance creation/deletion and status queries may fail
I'll send an 'all clear' after this switch is finished or abandoned.
-Andrew