[ceph-users] OSD node reinstallation

Alexandru Cucu me at alexcucu.ro
Tue Oct 30 02:15:35 PDT 2018


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.
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>
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