diskimage-builder/elements/redhat-common
Ian Wienand cb0e0e903d Use dnf to cleanup old kernels
As described in the comment, there is a dnf equivalent of this command
that doesn't require us installing yum-utils (which drags in yum on
dnf-only systems such as f23)

This is a small consequence to this -- due to us not installing
yum-utils some installs will now be completely yum free.  This causes
a breakage in ironic-agent 99-remove-extra-packages where we remove
the yum package.  There is a long-standing bug/feature where missing
packages in a group of packages do not cause yum/dnf to exit with
failure, but uninstalling a single package will.  Because we have made
the systems yum-free, the uninstall of yum can fail in this corner
case.

It has always been like this, so I'm in favour of the "ain't broke"
approach.  To work-around this, I have just put yum into the existing
list of packages to be cleaned up.  I have added a note to the yum
installer taking note of this behaviour for future reference.

Change-Id: I8bbdc07ccdb89a105b4fc70d5a215077c42fcd03
2016-02-08 14:20:56 +11:00
..
bin Download a compressed centos cloud images 2015-09-17 10:03:59 +01:00
finalise.d Use dnf to cleanup old kernels 2016-02-08 14:20:56 +11:00
pre-install.d Remove grub2 in redhat-common/pre-install.d/15-remove-grub 2015-09-02 15:15:13 +10:00
element-deps Use package-installs in more elements 2014-09-08 15:16:14 -04:00
package-installs.yaml Remove grub2 in redhat-common/pre-install.d/15-remove-grub 2015-09-02 15:15:13 +10:00
README.rst Fix title of env vars section of redhat-common README to match template 2015-10-08 17:05:57 -07:00

=============
redhat-common
=============
Image installation steps common to RHEL, CentOS, and Fedora.

Requirements:

If used to build an image form a cloud image compress with xz
(the default in centos), this element uses "unxz" to decompress
the image. Depending on your distro you may need to install either
the xz or xz-utils package.

Environment Variables
---------------------

DIB_LOCAL_IMAGE
  :Required: No
  :Default: None
  :Description: Use the local path of a qcow2 cloud image. This is useful in
   that you can use a customized or previously built cloud image from
   diskimage-builder as input. The cloud image does not have to have been built
   by diskimage-builder. It should be a full disk image, not just a filesystem
   image.
  :Example: ``DIB_LOCAL_IMAGE=rhel-guest-image-7.1-20150224.0.x86_64.qcow2``