[PVE-User] Remove 1-2 OSD from PVE Cluster

[PVE-User] Remove 1-2 OSD from PVE Cluster

[Сергей Цаболов]

Hello to all.

I have cluster with 7 node.

Storage for VM disk and others pool data is on ceph version 15.2.15 
(4b7a17f73998a0b4d9bd233cda1db482107e5908) octopus (stable)

On pve-7 I have 10 OSD and for test I want to remove 2 osd from this node.

I write some steps command how I remove this OSD from pve-7 cluster and 
ceph storage.

1) root@pve-7 ~ # ceph osd tree

2) ceph osd reweight
2.1) ceph osd reweight osd.${ID} 0.98
2.2) ceph osd reweight osd.${ID} 0.0 can I set the 0.0 to clean osd.X 
before remove it?

3) When osd is clean from data can I?
ceph osd down osd.${ID}

4) Remove the osd from cluster
ceph osd out osd.${ID}

5) Stop the OSD and umount the osd
systemctl stop ceph-osd@${ID}
umount /var/lib/ceph/osd/ceph-${ID}

6) Remove the osd from CRUSH map:
ceph osd crush remove osd.${ID}

7) Remove the user of OSD:
ceph auth del osd.${ID}

8) And now full delete the OSD:
ceph osd rm osd.${ID}

9) Last command

ceph osd tree (removed OSD not showing

Can some one suggest me my steps command is correct ?

Or I need change some steps?

Thanks .

-- 
-------------------------
Sergey TS
The best Regard

Re: [PVE-User] Remove 1-2 OSD from PVE Cluster

[Сергей Цаболов]

Hi,

I not have Remove OSD in GUI.

If I select OSD.X  have:  Start (if stoped)  , Stop , Restart, Out , In 
(if is out) and on More button: Srub , Deep Scrub.

But the most important is in gui not have button to clean OSD from data.


13.01.2022 17:48, Eneko Lacunza пишет:
> Hi,
>
> Why not use "Remove OSD" button in PVE WUI? :-)
>
> El 13/1/22 a las 9:13, Сергей Цаболов escribió:
>> Hello to all.
>>
>> I have cluster with 7 node.
>>
>> Storage for VM disk and others pool data is on ceph version 15.2.15 
>> (4b7a17f73998a0b4d9bd233cda1db482107e5908) octopus (stable)
>>
>> On pve-7 I have 10 OSD and for test I want to remove 2 osd from this 
>> node.
>>
>> I write some steps command how I remove this OSD from pve-7 cluster 
>> and ceph storage.
>>
>> 1) root@pve-7 ~ # ceph osd tree
>>
>> 2) ceph osd reweight
>> 2.1) ceph osd reweight osd.${ID} 0.98
>> 2.2) ceph osd reweight osd.${ID} 0.0 can I set the 0.0 to clean osd.X 
>> before remove it?
>>
>> 3) When osd is clean from data can I?
>> ceph osd down osd.${ID}
>>
>> 4) Remove the osd from cluster
>> ceph osd out osd.${ID}
>>
>> 5) Stop the OSD and umount the osd
>> systemctl stop ceph-osd@${ID}
>> umount /var/lib/ceph/osd/ceph-${ID}
>>
>> 6) Remove the osd from CRUSH map:
>> ceph osd crush remove osd.${ID}
>>
>> 7) Remove the user of OSD:
>> ceph auth del osd.${ID}
>>
>> 8) And now full delete the OSD:
>> ceph osd rm osd.${ID}
>>
>> 9) Last command
>>
>> ceph osd tree (removed OSD not showing
>>
>> Can some one suggest me my steps command is correct ?
>>
>> Or I need change some steps?
>>
>> Thanks .
>>
>
> Eneko Lacunza
> Zuzendari teknikoa | Director técnico
> Binovo IT Human Project
>
> Tel. +34 943 569 206 | https://www.binovo.es
> Astigarragako Bidea, 2 - 2º izda. Oficina 10-11, 20180 Oiartzun
>
> https://www.youtube.com/user/CANALBINOVO
> https://www.linkedin.com/company/37269706/
>
>
Sergey TS
The best Regard

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