Re: Ceph Leadership Team meeting 2021-05-05

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Hi Sebastian!

Thanks!
–––––––––
Sébastien Han
Senior Principal Software Engineer, Storage Architect

"Always give 100%. Unless you're giving blood."

On Thu, May 6, 2021 at 11:19 AM Sebastian Wagner <sewagner@xxxxxxxxxx> wrote:
>
> Hi Sebastien!
>
> Am 06.05.21 um 08:51 schrieb Sebastien Han:
> > Inline:
> > Thanks!
> > –––––––––
> > Sébastien Han
> > Senior Principal Software Engineer, Storage Architect
> >
> > "Always give 100%. Unless you're giving blood."
> >
> > On Thu, May 6, 2021 at 12:29 AM Gregory Farnum <gfarnum@xxxxxxxxxx> wrote:
> >> Hi all,
> >>
> >> Highlights from this weeks' CLT meeting:
> >>
> >> - Can we deprecate ceph-nano?
> >>    - Yes; it is no longer maintained. Josh will note as much in the
> >> README and  archive this and other old repos in the github org.
> >>    - ceph-adm replaces most use cases since it supports
> >> containerization and deployment onto a single host. Team will explore
> >> supporting OSDs on loopback devices, which is the main differentiator.
> > Small correction, ceph-nano does not use loopback devices, it runs
> > "ceph-osd --mkfs" on a directory and optionally can take block device
> > if provided.
>
> cephadm is not a 100% replacement for ceph-nano, indeed. My
> idea was to consolidate things a bit and provide a fully supported
> alternative.
>
>
> > As gaps I can see:
> >
> > * cephadm does not have multi-clusters support.
> It does actually. If you're a bit careful with the bootstrap arguments (like
> avoding port conflicts), you can have more than a single cluster.

Agreed, however, cn's goal was to be frictionless, assuming people do
not need to know about port conflicting or internal details.
it'd be nice if cephadm could change the port automatically if a mon
is already running (which I assume is the most problematic issue).

>
>
> > * With cn you can run as many clusters with any Ceph version.
> Right, we have a dependency on the major Ceph version.
> > * cephadm only runs on Linux, where cn can run on any OS that has a
> > Docker daemon running
> Accidentally, I had a discussion with someone who was interested in
> porting cephadm to FreeBSD. But yes, cephadm makes use of systemd.
>
>
> >
> > Otherwise, I'm fine with archiving the repository. However, there is
> > still a lot of interest, I'm frequently getting e-mail about it so we
> > should make it clear that cephadm replaces it.
> > Also, are we ok to lose the audience of non-Linux users? I believe it
> > makes a good portion of the user base.
>
>
> That's Windows, right?

Both Windows and MacOS, have Docker on {Mac|Window}, which are really popular.
Losing such an audience wouldn't be good, since a lot of non-technical
people are still using cn for demos I believe, regardless of which
platform they are running on.

>
> >
> > FYI I just archived https://github.com/ceph/cn-core which goal was to
> > use a Golang based bootstrapper instead of the demo.sh script from
> > ceph-container.
> >
> >> - Discussed the Redmine tracker triage process and considered removing
> >> the top-level "Ceph" project from the list of available new ticket
> >> destinations. I and others pushed back on this since we need a place
> >> to put non-subproject-specific issues, so we agreed that going forward
> >> project leads will scrub the top-level Ceph project for new relevant
> >> issues during their regular bug scrubs. I took an action item to go
> >> through the existing back log and sort it appropriately (though I also
> >> think Sage did a bunch this morning).
> >>
> >> - We added a COSI repository in the Ceph org for working with RGW.
> >> - Pacific v16.2.2 needed release notes review, which it got so the
> >> release is out now.
> >> - We got a question about new options for the dashboard and other
> >> component communication, following on from the CDS sessions. Ernesto
> >> will follow up on this.
> >>
> >> -Greg
> >> _______________________________________________
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> >>
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