Make sure rngd, a hardware RNG entropy gatherer daemon, is installed on
all DIB-built Red Hat family distro images. rngd comes installed by
default in a typical base installation as it's proven to help speed
things up.
Nova attaches the virtio-rng-pci device to VMs. virtio-rng-pci is a
device that provides feed random data. However, it is of little to no
use if the virtual machine is not configured to make use of given
device. That is where rngd can help by facilitating entropy to the pool
from virtio-rng-pci.
$ openstack image set --property hw_rng_model=virtio [...]
$ openstack flavor set --property hw_rng:allowed=True [...]
DIB-built minimal images do not come with rngd installed. This patch
makes sure the daemon is installed. Its systemd service comes already
enabled.
Change-Id: I34a989dbfc57d4c98113ac25c81dfb500945ff0a
Change I008f8bbc9c8414ce948c601e3907e27764e15a52 has shown that we
build redhat images without the "semange" tool available, which comes
from the policycoreutils-python package (see also
I3f9e2c322d042a5dddba33451c0fc21a4d32a88a).
I403e7806ae10d5dd96d0727832f4da20e34b94c7 added some of the selinux
libraries to yum-minimal for ansible support, but not to others.
Given both these changes, it seems that selinux[-targeted],
libselinux[-python] and policycoreutils[-python] can reasonably
considered part of all base images. Move the selinux related packages
into redhat-common.
This also adds it explicitly to install_test_deps.sh. It was actually
being dragged in by the docker install, but is a required component
for building (should be in bindep, but not there with that yet).
Change-Id: Idd4ae71ee6deee84604823b6b5dc4a845f316e01
Related-Bug: #1707788
Currently we have all our elements and library files in a top-level
directory and install them into
<root>/share/diskimage-builder/[elements|lib] (where root is either /
or the root of a virtualenv).
The problem with this is that editable/development installs (pip -e)
do *not* install data_files. Thus we have no canonical location to
look for elements -- leading to the various odd things we do such as a
whole bunch of guessing at the top of disk-image-create and having a
special test-loader in tests/test_elements.py so we can run python
unit tests on those elements that have it.
data_files is really the wrong thing to use for what are essentially
assets of the program. data_files install works well for things like
config-files, init.d files or dropping documentation files.
By moving the elements under the diskimage_builder package, we always
know where they are relative to where we import from. In fact,
pkg_resources has an api for this which we wrap in the new
diskimage_builder/paths.py helper [1].
We use this helper to find the correct path in the couple of places we
need to find the base-elements dir, and for the paths to import the
library shell functions.
Elements such as svc-map and pkg-map include python unit-tests, which
we do not need tests/test_elements.py to special-case load any more.
They just get found automatically by the normal subunit loader.
I have a follow-on change (I69ca3d26fede0506a6353c077c69f735c8d84d28)
to move disk-image-create to a regular python entry-point.
Unfortunately, this has to move to work with setuptools. You'd think
a symlink under diskimage_builder/[elements|lib] would work, but it
doesn't.
[1] this API handles stuff like getting files out of .zip archive
modules, which we don't do. Essentially for us it's returning
__file__.
Change-Id: I5e3e3c97f385b1a4ff2031a161a55b231895df5b
