openstack/diskimage-builder
Code Issues Proposed changes
1aee4a8a6d
diskimage-builder/diskimage_builder/elements/yum
History
Steve Baker eb395ec558 Remove EOLed CentOS 7 and RHEL 7 
CentOS 7 reached EOL on 30th June 2024[1] and RHEL 7 ended its
maintenance support 2 phase[2] the same date.

This change removes the ablity to build images derived from these base
images.

The centos and centos-minimal elements now default to a DIB_RELEASE
value of 9-stream.

[1] https://www.redhat.com/en/topics/linux/centos-linux-eol
[2] https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux/rhel-7-end-of-maintenance

Change-Id: Ic50e08d9f84bbd319129be236d799eade5f40be8
2024-07-05 09:53:29 +12:00
..
bin Ensure redhat efi packages are reinstalled during finalise 2021-04-21 10:56:37 +12:00
cleanup.d Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
extra-data.d Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
post-install.d Use $YUM instead of direct calls in more places 2019-10-03 00:22:18 +00:00
pre-install.d Remove EOLed CentOS 7 and RHEL 7 2024-07-05 09:53:29 +12:00
root.d Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
element-deps Move elements & lib relative to diskimage_builder package 2016-11-01 17:27:41 -07:00
README.rst Remove EOLed CentOS 7 and RHEL 7 2024-07-05 09:53:29 +12:00

README.rst

yum

Provide yum specific image building glue.

RHEL/Fedora/CentOS and other yum based distributions need specific yum customizations.

Customizations include caching of downloaded yum packages outside of the build chroot so that they can be reused by subsequent image builds. The cache increases image building speed when building multiple images, especially on slow connections. This is more effective than using an HTTP proxy as a yum cache since the same rpm from different mirrors is often requested.

Custom yum repository configurations can also be applied by defining DIB_YUM_REPO_CONF to a space separated list of repo configuration files. The files will be copied to /etc/yum.repos.d/ during the image build, and then removed at the end of the build. Each repo file should be named differently to avoid a filename collision.

The yum repository can also be configured by defining DIB_YUM_REPO_PACKAGE as a yum available package or a URL to an rpm file. This package can install repo files with any associated keys and certificates.

Environment Variables

DIB_DNF_MODULE_STREAMS
Required

No

Default

None

Description

The following environment variable is used to select module streams to be enabled during an image build on Yum/DNF based distributions.Any existing stream for the given module is first disabled prior to enabling the specified stream.

Example

DIB_DNF_MODULE_STREAMS='virt:8.2 container-tools:3.0'