Hi John,

Thanks for pointing out that script, do you have a link to it? I'm not able
to find it.
Just want to look at the script to understand its strategy.

Kind regards,
Caspar Smit

2018-04-16 13:11 GMT+02:00 John Petrini <[email protected]>:

> There's a gentle reweight python script floating around on the net that
> does this. It gradually reduces the weight of each osd one by one waiting
> for rebalance to complete each time.
>
> I've never used it and it may not work on all versions so I'd make sure to
> test it.
>
> That or do it manually but that's a tedius process.
>
> On Mon, Apr 16, 2018, 06:38 Caspar Smit <[email protected]> wrote:
>
>> Hi All,
>>
>> What would be the best way to remove an entire OSD node from a cluster?
>>
>> I've ran into problems removing OSD's from that node 1 by 1, eventually
>> the last few OSD's are overloaded with data.
>>
>> Setting the crush weight of all these OSD's to 0 at once seems a bit
>> rigorous
>> Is there also a gentle (balanced) way to slowly move data off that node?
>>
>> Something like:
>>
>> ceph osd crush reweight <all OSD's to remove> 0.8    (all at once?)
>> then to 60%, 40%, 20% and eventually 0
>>
>> Kind regards,
>> Caspar
>>
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>>
>
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