Re: Persistent storage for Mgr Modules

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On Mon, Jan 29, 2018 at 9:12 AM, Wido den Hollander <wido@xxxxxxxx> wrote:
> Hi,
>
> I'm still working on the 'brag' module for the Mgr to send out a report
> every X interval back to the Ceph project so that we get a feeling of how
> people use Ceph.
>
> I'd like to store a timestamp of the last report send and then wait for it
> to expire before sending a new one.
>
> The interval will be something like a week by default and I'd like to store
> it somewhere persistent.
>
> Obviously I can store it in a local variable, but if the Mgr fails or is
> restarted so is the module and thus that data is lost.
>
> Is it OK to use the config-key for this? It's not really configuration, but
> is it allowed to store such values in there?

Yep!

The "config" naming is a strong hint to programmers that this is not
for bulk data, but ultimately it's all just bytes :-)

John

>
> Thanks,
>
> Wido
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