On 06/03/18 13:21, Murilo Opsfelder Araujo wrote:
On 03/06/2018 03:11 AM, Brian Stinson wrote:
Hi Folks,
Now that we have SIG Content in the /altarch directories for CentOS 7 on the mirrors, we need to come with some requirements and recommendations for dealing with the different locations.
tl;dr The current thinking is to add the following snippet in the %post of centos-release and release to all of the arches. This will set a yum var to the correct content location when a new system gets installed:
`uname -m | grep -q 'x86_64' && echo 'centos' >/etc/yum/vars/contentdir || echo 'altarch' >/etc/yum/vars/contentdir`Here's the start of a proposal from the SIG perspective
## Requirements:
The same noarch binary RPM *must* be distributable to the Extras repo for each architecture
The centos-release-<SIG> packages *must* require centos-release
## New Recommendations for creating a centos-release file:
- A yum variable called 'contentdir' will be populated with the toplevel directory for SIGs to use
1.) Modify baseurls in the SIG repo files to look like the following (using openstack-queens as an example):
[centos-openstack-queens] name=CentOS-7 - OpenStack queens baseurl=https://mirror.centos.org/$contentdir/cloud/$basearch/openstack-queens/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Cloud exclude=sip,PyQt4
## Discussion
I'd like to hear thoughts, additions, and subtractions here before we update the SIGGuide and rework centos-release.
Cheers!
Hi, Brian.
I don't have the whole background of why non-x86_64 architectures are placed at /altarch. Perhaps you or someone else from CentOS can provide some of the details.
Wouldn't it be simpler if a non-x86_64 architecture was just another directory on, for example, /centos/7/<content>/<arch> hierarchy?
This also simplifies packaging.
Cheers Murilo
The approach given by Brian isn't rocket science and would permit to cover that /altarch/ vs /centos/ difference for baseurl= , that's also more or less what we use for armhfp , to redirect the kernel repo to correct one, so it's just a one liner snippet in the .spec for the -release noarch pkg :-)
WRT difference in the URI, it was a decision taken by KB and Jim when the first altarch (aarch64) landed on mirror.centos.org, and then we continued with it , as it also added more content/storage, and some external mirrors weren't keen on adding all those arches. That's the reason why they can then do an "opt-in" for those if they want : - https://www.centos.org/download/mirrors/ - https://www.centos.org/download/altarch-mirrors/
Does that answer your question ?