FWIW: we'll be shipping Mimic on Debian with an upgraded libc6.
This is of course somewhat of a zombie Debian: our build system
initially fell apart quite a few times. But for the build system it's not
a problem -- it will be thrown away after the build finishes anyway.
These problems will occur when installation other packages that
now depend on the wrong versions/pull in half of buster.
Our OS simply comes with an upgraded libc6 - also a potential
problem. However, all of our deployments are based on the concept
of immutable infrastructure. We do not update images with apt
while they are running*. We ship one image as squashfs and
upgrading to a newer version means rebooting your server with
our new image via an automated rolling reboot process.
We will keep our mirror for Debian updated and public, but we will
not officially recommend it or "real" Debian installations that are not
based on our live image.
We've looked a little bit into building with an older libc, but it's not
worth the effort for us at the moment.
We expect to ship this with Mimic 13.2.1 assuming that it will
be stable enough. 13.2.0 with Debian is working fine so far on
our test cluster.
Paul
(* except temporarily to ensure proper order during Ceph upgrades
and security fixes of course)
2018-06-19 10:02 GMT+02:00 Eneko Lacunza <elacunza@xxxxxxxxx>:
Hi Fabian,
Hope your arm is doing well :)
unless such a backport is created and tested fairly well (and we willWe're responsible of about 6 small clusters of Proxmox + Ceph; I think this is the path to take.
spend some more time investigating this internally despite the caveats
above), our plan B will probably involve:
- building Luminous for Buster to ease the upgrade from Stretch+Luminous
(upgrading both base distro release and Ceph major version in one go
did not work out in the past)
- keeping our Stretch-based release on Luminous even once Luminous is EoL upstream
- strongly recommending to those of our users that rely on Ceph to
upgrade to our (future/next) Buster-based release (which will likely
get Mimic or Nautilus as default Ceph version, depending on whether
the Ceph release schedule holds or not)
- hope this whole story does not repeat itself too often because of the
inherent misalignment between Ceph and Debian release cycles
especially the second and third point will irritate some of our users,
but sometimes life only hands you lemons.
Use the time to "extend" Luminous support, maybe you can do this together with others, maybe even with some support from Ceph upstream. I think it should be less work than the gcc backport just for a few months.
Just skip Mimic like you did with non LTS releases in the past. It's also less work for the Proxmox admins, as we'll be able to skip a Ceph upgrade easily.
Cheers
Eneko
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Paul Emmerich
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
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81247 München
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Tel: +49 89 1896585 90
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
Freseniusstr. 31h
81247 München
www.croit.io
Tel: +49 89 1896585 90
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