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Ian Wienand 5f47584196 yum-minimal: use DNF tools on host 
The latest Debian bullseye release doesn't provide yum any more, only
DNF.  This breaks the minimal builds that are using on-host yum tools
to start the chroot.  Probe for yumdownloader, and if it's not there,
use DNF.

Note this requires "dnf download" which may not be packaged.  See
I21cfbd3935e48be4b92591ea36c7eed301230753 for a sample work-around
that installs this plugin in the nodepool-builder container.

Change-Id: Ia7f1e4d115cc67c378d865d91af94a07b8cdc6cc
2021-08-30 14:14:32 +10:00
..
cleanup.d Start at using CI mirrors for fedora/centos 2017-06-21 12:02:27 +10:00
install.d Only enable dbus-daemon on fedora-29 2019-07-12 10:21:49 -07:00
pre-install.d Update locales for Centos 8 2019-10-03 00:22:18 +00:00
root.d yum-minimal: use DNF tools on host 2021-08-30 14:14:32 +10:00
element-deps Run dib-run-parts out of /tmp 2017-04-05 13:11:22 +10:00
package-installs.yaml Revert "dib-lint: use yamllint to parse YAML files" 2020-05-28 16:44:49 +10:00
pkg-map Introduce openEuler distro 2021-08-04 03:06:55 +00:00
README.rst Permit specification of extra bootstrap packages 2021-08-02 11:57:11 -07:00

README.rst 

===========
yum-minimal
===========
Base element for creating minimal yum-based images.

This element is incomplete by itself, you'll want to use the centos-minimal
or fedora-minimal elements to get an actual base image.

Use of this element will require 'yum' and 'yum-utils' to be installed on
Ubuntu and Debian. Nothing additional is needed on Fedora or CentOS.

If you wish to have DHCP networking setup for eth0 & eth1 via
/etc/sysconfig/network-config scripts/ifcfg-eth[0|1], set the
environment variable `DIB_YUM_MINIMAL_CREATE_INTERFACES` to `1`.

If you wish to build from specific mirrors, set
``DIB_YUM_MINIMAL_BOOTSTRAP_REPOS`` to a directory with the ``.repo``
files to use during bootstrap and build.  The repo files should be
named with a prefix ``dib-mirror-`` and will be removed from the final
image.

If you wish to include extra repositories, set ``DIB_YUM_MINIMAL_EXTRA_REPOS``
to a directory with the ``.repo`` files. The repo files will not be removed
from the final image.

If you are bootstrapping a custom or unsupported OS, and need to install
additional packages to setup the base chroot, set
``DIB_YUM_MINIMAL_BOOTSTRAP_PACKAGES`` to the list of additional packages to
install.