On Monday 20 of July 2020 02:40:48 Mike Bird wrote:
> On Sun July 19 2020 17:12:12 Sl�vek Banko wrote:
> > I'm afraid that will require a slightly more complex solution.
> >
> > Redirector selects the mirror primarily based on GeoIP information.
> > Therefore, it is very likely that in the current configuration, the
> > same backend will be selected repeatedly in the case of
> > MirrorService.org (in case both urls are accessible and updated). And
> > that would make it impossible to use a balancer on the
> > MirrorService.org side.
>
> I would imagine that is OK as we are but a tiny portion of Tim's
> traffic.
>
> The important thing is not to redirect user requests for 2,000 newish
> files to a server that does not have them yet.
>
> > The ideal solution would probably be to add the "base URL" and
> > "backend URLs" option to the mirror configuration. A "base URL" would
> > be used for address listing and redirection. To test the usability of
> > the mirror, all available "backend URLs" would then be tested and the
> > overall status of the mirror would be determined by whether at least
> > one "backend URL" is accessible and at the same time whether all of
> > the accessible "backend URLs" are updated.
>
> Maybe some kind of "partial" status on the web page if some but not all
> backends are up?
>
For use in the redirector, it will be important if all accessible backends
are updated - ie "green" status. If any of the backends is inaccessible,
this is not an obstacle for use with the redirector.
For detailed information suitable for diagnostics, in addition to the
summary status, the status of individual backends could also be listed
there. Instead of the summary "partial", a real state could be seen.
For information, the redirector uses a special page mode to find usable
mirrors, where it gets a plain list of usable urls - mirrors that are not
ready are not listed:
https://www.trinitydesktop.org/mirrorstatus.php?mr
> > What is your opinion on this idea? This should ensure reliable
> > operation for use with the redirector, while allowing proper use of
> > the balancer on the MirrorService.org side.
>
> Sounds great to me. Let's see what Tim B thinks.
>
> --Mike
>
Cheers
--
Sl�vek
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