[ceph-users] OSD node reinstallation

David Turner drakonstein at gmail.com
Tue Oct 30 05:50:09 PDT 2018


Basically it's a good idea to backup your /etc/ceph/ folder to reinstall
the node. Most everything you need will be in there for your osds.

On Tue, Oct 30, 2018, 6:01 AM Luiz Gustavo Tonello <
gustavo.tonello at gmail.com> wrote:

> Thank you guys,
>
> It'll save me a bunch of time, because the process to reallocate OSD files
> is not so fast. :-)
>
>
>
> On Tue, Oct 30, 2018 at 6:15 AM Alexandru Cucu <me at alexcucu.ro> wrote:
>
>> Don't forget about the cephx keyring if you are using cephx ;)
>>
>> Usually sits in:
>>     /var/lib/ceph/bootstrap-osd/ceph.keyring
>>
>> ---
>> Alex
>>
>> On Tue, Oct 30, 2018 at 4:48 AM David Turner <drakonstein at gmail.com>
>> wrote:
>> >
>> > Set noout, reinstall the OS without going the OSDs (including any
>> journal partitions and maintaining any dmcrypt keys if you have
>> encryption), install ceph, make sure the ceph.conf file is correct,zip
>> start OSDs, unset noout once they're back up and in. All of the data the
>> OSD needs to start is on the OSD itself.
>> >
>> > On Mon, Oct 29, 2018, 6:52 PM Luiz Gustavo Tonello <
>> gustavo.tonello at gmail.com> wrote:
>> >>
>> >> Hi list,
>> >>
>> >> I have a situation that I need to reinstall the O.S. of a single node
>> in my OSD cluster.
>> >> This node has 4 OSDs configured, each one has ~4 TB used.
>> >>
>> >> The way that I'm thinking to proceed is to put OSD down (one each
>> time), stop the OSD, reinstall the O.S., and finally add the OSDs again.
>> >>
>> >> But I want to know if there's a way to do this in a more simple
>> process, maybe put OSD in maintenance (noout), reinstall the O.S. without
>> formatting my Storage volumes, install CEPH again and enable OSDs again.
>> >>
>> >> There's a way like these?
>> >>
>> >> I'm running CEPH Jewel.
>> >>
>> >> Best,
>> >> --
>> >> Luiz Gustavo P Tonello.
>> >> _______________________________________________
>> >> ceph-users mailing list
>> >> ceph-users at lists.ceph.com
>> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>> >
>> > _______________________________________________
>> > ceph-users mailing list
>> > ceph-users at lists.ceph.com
>> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>
>
>
> --
> Luiz Gustavo P Tonello.
>
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