Hi David,
Thank you for pointing out the option.
On http://docs.ceph.com/docs/infernalis/release-notes/ one can read:
-
Ceph daemons now run as user and group ceph
by default. The
ceph user has a static UID assigned by Fedora and Debian (also
used
by derivative distributions like RHEL/CentOS and Ubuntu). On
SUSE
the ceph user will currently get a dynamically assigned UID
when the
user is created.
If your systems already have a ceph user, upgrading the
package will cause
problems. We suggest you first remove or rename the existing
‘ceph’ user
before upgrading.
When upgrading, administrators have two options:
-
Add the following line to ceph.conf
on all hosts:
setuser match path = /var/lib/ceph/$type/$cluster-$id
This will make the Ceph daemons run as root (i.e.,
not drop
privileges and switch to user ceph) if the daemon’s
data
directory is still owned by root. Newly deployed
daemons will
be created with data owned by user ceph and will run
with
reduced privileges, but upgraded daemons will continue
to run as
root.
-
Fix the data ownership during the
upgrade. This is the preferred option,
but is more work. The process for each host would be
to:
-
Upgrade the ceph package. This
creates the ceph user and group. For
example:
ceph-deploy install --stable infernalis HOST
-
Stop the daemon(s).:
service ceph stop # fedora, centos, rhel, debian
stop ceph-all # ubuntu
-
Fix the ownership:
chown -R ceph:ceph /var/lib/ceph
-
Restart the daemon(s).:
start ceph-all # ubuntu
systemctl start ceph.target # debian, centos, fedora, rhel
Since it seemed more elegant to me, I chose the second option and
followed the steps.
To be continued... Over night, some more placement groups seem to be
inconsistent. I'll post my findings later on.
Regards,
Kees
On 17-08-18 17:21, David Turner wrote:
In
your baby step upgrade you should avoid the 2 non-LTS releases of
Infernalis and Kraken. You should go from Hammer to Jewel to
Luminous.
The general rule of doing the upgrade to put all of your OSDs
to be owned by ceph was to not change the ownership as part of
the upgrade. There is a [1] config option that tells Ceph to
override the user the daemons run as so that you can separate
these 2 operations from each other simplifying each maintenance
task. It will set the user to whatever the user is for each
daemon's folder.
[1]
setuser
match path = /var/lib/ceph/$type/$cluster-$id
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