Re: Jigdoes of CentOS 4.4 and 5.0 i386/x86_64 CD/DVD available.

On Tue, 17 Apr 2007, Maciej Zenczykowski wrote:

>> also need to keep in mind that if its going to hit
.centos.org machines, 
>> its going to come atleast a few days later than the
.torrent  - since we 
>> tend to get hit real hard by people using yum and
doing net installs as 
>> well.
>
> So ideally the best solution here is to have some sort
of DNS resolving in 
> place so that mirror.centos.org always resolves to your
closest in-sync 
> mirror  --  I was under the impression that we already
have this for yum???

But --- does jigdo have any kind of indirection in place ,
eg to get a 
list of mirrors and use them ??

Or could yum be used as a wrapper around jigdo maybe to pull
stuff down 
using fastestmirror or maybe even dags stuff ??

Otherwise it gets messy because mirrors have different file
structures, so 
just using CNAME's wont work.

The trouble I see is that if a user doesnt have a local
mirror or 
local copy of a set if isos then downloading the packages
individually 
from a mirror may be less efficient than downloading an iso
/ set of isos, 
and certainly without mirror redirect and fastestmirror it
is a non starter ...

The fedora guys have beern working on stuff that we also
ought to look at 
, and we should look at metalinks while we are at it.

Regards
Lance

--
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> But --- does jigdo have any kind of indirection in
place , eg to get a
> list of mirrors and use them ??

It does use a list of mirros for the debian.  I haven't
really looked
into it too deeply.
Furthermore the jigdo-lite program is really just a shell
script -
should be easy to get it to behave however we want it (it
just runs
wget).

> Or could yum be used as a wrapper around jigdo maybe to
pull stuff down
> using fastestmirror or maybe even dags stuff ??

I would really like to see dynamic DNS resolution based on
source IP
giving out the address of the nearest centos compatible
mirror - then
it would 'just work'.

> Otherwise it gets messy because mirrors have different
file structures, so
> just using CNAME's wont work.

And that's the problem... But we could possibly work with
them to get
this working - at least for http this is relatively trivial
(just
setup a virtual domain for whatever global name we would
decide on
like mirror.centos.org).

> The trouble I see is that if a user doesnt have a local
mirror or
> local copy of a set if isos then downloading the
packages individually
> from a mirror may be less efficient than downloading an
iso / set of isos,
> and certainly without mirror redirect and fastestmirror
it is a non starter ...

There aren't that many files on a cd, so the extra time
spent opening
closing connections shouldn't really be significant - unless
you have
an extremely big pipe.  But - yes - we would want each user
to use the
closest possible mirror.

> The fedora guys have beern working on stuff that we
also ought to look at
> , and we should look at metalinks while we are at it.

No idea what this is... 

Cheers,
Maciej.
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