Re: Export nfs-ganesha from standby MDS and last MON

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On Mon, Aug 22, 2016 at 2:05 PM, Brady Deetz <bdeetz@xxxxxxxxx> wrote:
> Is it an acceptable practice to configure my standby MDS and highest IP'd
> MON as ganesha servers?
>
> Since MDS is supposedly primarily bound to a single core, despite having
> many threads, would exporting really cause any issues if the niceness of the
> ganesha service was higher than the mds process?
>
> What about the mon service?

I wouldn't do it quite this way for one simple reason: if you put
Ganesha on your standby MDS, and the primary MDS fails, Ganesha will
get reduced memory and CPU at precisely the same time as the
underlying CephFS is getting slower. If you can afford to run Ganesha
on your standby, you can run it on your primary MDS too. :)
-Greg
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