[CentOS-devel] building live media on CBS

There was a discussion earlier today in #centos-devel about a way to
build live iso images on cbs.centos.org.

Koji seems to permit to do that through "koji spin-livecd"

Documentation is available here : 	https://docs.pagure.org/koji/image_build/

One thing to keep in mind though is that one needs to have livecd-tools
pkg installed, and corresponding to the os distro/version the livecd
will be based on :  you need a centos 7 host to build a centos 7 liveCD
and that can't work to build a centos 6 liveCD (see as an example
https://bugzilla.redhat.com/show_bug.cgi?id=1035276)

Depending on the target audience, and if we only want to build centos 7
live media, I can add an additional koji builder, running centos 7 and
livecd-tools (from extras, and the one we use to build also the centos
live media found on mirror.centos.org)

My only concern (but has to be tested) is this : (from the koji doc
linked above) :

"The image building tasks will fail if your image tries to include a
package that was not built in your build system. This is because the
package does not have any origin information stored in Koji’s database."

That can be a problem as *no* pkg from the CentOS 7 distro was built on
cbs.centos.org

Opinions, ideas, workaround ?

-- 
Fabian Arrotin
The CentOS Project | http://www.centos.org
gpg key: 56BEC54E | twitter: @arrfab

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