Re: Upcoming fedoraproject Datacenter move reminder and plans

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On Wed, Jun 03, 2020 at 05:31:17AM +0000, Mattia Verga wrote:
> Il 02/06/20 18:40, Kevin Fenzi ha scritto:
> > 2020-06-08 mon: Our fedora-messaging bus and gateways to it
> > (github2fedmsg, bugzilla2fedmsg), mirrormanager, product definition
> > center (pdc), and our identity and authentication systems. Messages over our
> > message bus may be slow or missing and users may be unable to login at
> > various times as we migrate services over.
> >
> > Additionally, we will be stopping services that will not be back until
> > later in the month.
> > These include:
> >   * Fedocal
> >   * Badges
> >   * Nuancier
> >   * koschei
> >   * simple-koji-ci
> >   * All staging services (*.stg.fedoraproject.org)
> >
> > 2020-06-09 tue: The build and packaging ecosystem. This includes koji,
> > src.fedoraproject.org, osbs, odcs, container registries, bodhi (updates
> > system). During this day maintainers should avoid builds/updates if at
> > all possible as they may or may not work at various times.
> >
> Since Bodhi heavy relies on messages on fedora-messaging bus to do 
> nearly all its things, I think it would be better to bring it down the 
> day before. Missing messages would mean updates not moved on, builds not 
> correctly tagged, etc, so it may worth stopping users from creating new 
> updates while fedora-messaging is down.

It won't actually be down, it will just be moved to the new datacenter. 

So, applications that connect to 'rabbitmq.fedoraproject.org' will get
the iad2 cluster instead of the phx2 one. Since we will change that when
we move it everything should be using the same cluster, so it should
still all work. 

Does that make sense?

ie, a build happens in phx2, the message goes to the _iad2_ rabbitmq
cluster and bodhi (listening there) acts on it.

The one wrinkle is fedmsg, which we can't easily switch over like that. 
So, we may well lot have all our fedmsgs. ;( 

kevin

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