[CentOS] local repositories

Johnny Hughes johnny at centos.org
Wed Jan 4 16:44:40 UTC 2012

On 01/04/2012 10:39 AM, Johnny Hughes wrote:
> On 01/04/2012 09:52 AM, John Hodrien wrote:
>> On Wed, 4 Jan 2012, m.roth at 5-cent.us wrote:
>>> I need a clarification to the documentation.
>>> My manager added a 6.2 repo; however, when I try doing pxeboot installs,
>>> it fails, asserting that it can't find the group info. Another admin I
>>> work with thinks it's not really what it's failing in, and notes that it
>>> 404's on images/updates.img and images/product.img. We *think* that's
>>> irrelevant and ok.
>>> What is not clear to me is when we run createrepo, what directory you need
>>> to be in at the time you execute it.
>> I would expect the createrepo to be done from the DVD root path, but I could
>> be wrong on that point.
>> Did you include the -g option to point to the comps.xml to include the package
>> group info?
>> Why are you doing a createrepo there at all?  If you're adding your own
>> packages to the base, why not have it as a separate repo?
> You do not HAVE to run createrepo unless you want to do so, and in fact
> I recommend that you don't.
> We do serveral things with createrepo, including providing deltarpms
> (the yum-presto plugin) for updates where a usually much smaller DELTA
> is downloaded for updates rather than the entire package.
> The options that we use for createrepo are:
> createrepo -g <path_to_comps.xml> -d --unique-md-filenames --deltas
> --num-deltas=5 --update --oldpackagedirs=<path_to_old_packages> .
> Note:  The -g allows for groups and is optional.
> Note:  There are usually more than one --oldpackagedirs=<path>,
> depending on where the old packages reside.

We run it from the current directory (thus the .  at the end above) ...
but the current directory is usually /centos/<version>/<repo>/<arch>/

So, for the 6.2 i386 os repo it would be: 

Or for the 6.2 x86_64 extras repo it would be: 

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