Mailinglist Archive: zypp-devel (116 mails)

[Michael E Brown <Michael_E_Brown@xxxxxxxx>]

On Thu, Jun 07, 2007 at 07:56:22AM +0100, Benji Weber wrote:
> On 06/06/07, Michael E Brown <Michael_E_Brown@xxxxxxxx> wrote:
> >Several reasons.
> >   - In the current yum implementation, the client gets the mirror list
> >     and randomly chooses an entry from the list.
> >   - It also will fail over down the list if there is any connection
> >     problem with the first server.
> >   - The mirror list can list different servers that have the repo at
> >     their own path.
> >   - Some people dont have administrative access to the web server to
> >     change the web server configuration to redirect.
> >
> >The mirror list is simply a URL to a file containing a list of mirror
> >paths. Because it is a URL, it can easily be configured to point at a
> >cgi that outputs the list.
> 
> The redirector used on software.opensuse.org and download.opensuse.org
> does solve most of the same problems.  See
> http://en.opensuse.org/Build_Service/Redirector
> 
> If the user adds the repository from software.opensuse.org or
> download.opensuse.org each request will be redirected to the
> appropriate location on a mirror. It should only redirect to mirrors
> which are actually working.
> 
> The main problem with this approach is that the central redirector
> must always be up, especially if one is encouraging users to use the
> redirector rather than mirrors directly. Currently (d|o).opensuse.org
> is not very reliable, going down every few weeks. Currently every time
> it goes down a large chunk of users lose package management. Until it
> is at least co-hosted in Provo as well as Nuremberg I'm not sure it's
> a good idea to use for the automatically added repositories.
> 
> Currently most of the mirrors the redirector redirects to (heanet,
> belnet, switch etc) are far more reliable than the redirector itself.

Thanks for the pointer.

The yum mirrorlist functionality is useful because you can point to a
file:// url if you want. For my purposes, I am not doing that, but
others do.

So I prototyped an extremely dumb example to make sure that my
webservers support setting http status from within cgi scripts, and it
appears to work.

I am going to say I still prefer the mirrorlist functionality, though.
It returns a larger list of addresses to the client, and the client can
fail over to another server if there is a problem. This makes for much
more reliable downloads.
--
Michael
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