I'm writing a yum plugin that updates the URLs of local repos. When the repo URL changes, I'd like to have yum run a yum clean all to make sure no out-of-date information is cached. I know yum has a hook for running code when yum clean [plugins|all] is requested but is it possible to trigger a clean all from within one of the plugin's other hook functions?
You can do this easily. Yum exposes a library which is consumed by command line program. Here is an example code for yum clean all:
import sys
sys.path.append("/usr/share/yum-cli")
import cli
ybc = cli.YumBaseCli()
ybc.cleanCli(["all"])
In case you want to do more then "clean all" using function check all the APIs exposed by CLI library methods exposed at /user/share/yum-cli folder :)
Regards,
Related
I have a Python library (https://github.com/jcrozum/PyStableMotifs) that I want to publish on PyPI. It depends on another library (https://github.com/hklarner/PyBoolNet) that I do not control and that is only available on GitHub, and in particular, it is not available on PyPI. My setup.py looks like this:
from setuptools import
setup(
... <other metadata> ...,
install_requires=[
'PyBoolNet # git+https://github.com/hklarner/PyBoolNet#2.3.0',
... <other packages> ...
]
)
Running pip install git+https://github.com/jcrozum/PyStableMotifs works perfectly, but I can't upload this to PyPI because of the following error from twine:
Invalid value for requires_dist. Error: Can't have direct dependency: 'PyBoolNet # git+https://github.com/hklarner/PyBoolNet#2.3.0'
My understanding is that direct links are forbidden by PyPI for security reasons. Nonetheless, PyBoolNet is a hard requirement for PyStableMotifs. What do I do? Give up on PyPI?
I just want pip install PyStableMotifs to work for my users. Ideally, this command should install the dependencies and I should not have to maintain two versions of setup.py.
Failing that, I have considered creating a "dummy" package on PyPI directing users to install using the command pip install git+https://github.com/jcrozum/PyStableMotifs. Is this a bad idea (or even possible)?
Are there already established best practices for this situation or other common workarounds?
EDIT:
For now, I have a clunky and totally unsatisfying workaround. I'm keeping two versions; a GitHub version that works perfectly, and a PyPI version that has the PyBoolNet requirement removed. If the user tries to import PyStableMotifs without PyBoolNet installed, an error message is shown that has install instructions for PyBoolNet. This is far from ideal in my mind, but it will have to do until I can find a better solution or until PyPI fixes this bug (or removes this feature, depending on who you ask).
My recommendation would be to get rid of the direct URL in install_requires, and tell your users where they can find that dependency PyBoolNet since it is not on PyPI. Don't force them on a specific installation method, but show them an example.
Maybe simply tell your users something like:
This project depends on PyBoolNet, which is not available on PyPI. One place where you can find it is at: https://github.com/hklarner/PyBoolNet.
One way to install PyStableMotifs as well as its dependency PyBoolNet is to run the following command:
python -m pip install 'git+https://github.com/hklarner/PyBoolNet#2.3.0#egg=PyBoolNet' PyStableMotifs
You could additionnally prepare a requirements.txt file and tell your users:
Install with the following command:
python -m pip install --requirement https://raw.githubusercontent.com/jcrozum/PyStableMotifs/master/requirements.txt
The content of requirements.txt could be something like:
git+https://github.com/hklarner/PyBoolNet#2.3.0#egg=PyBoolNet
PyStableMotifs
But in the end, you should really let your users choose how to install that dependency. Your project only need to declare that it depends on that library but not how to install it.
We have a Spacewalk server we use to distribute updates to our CentOS 6 and 7 client systems. None of the client systems have internet access. Only the spacewalk server has restricted access to complete repo sync updates.
We have an issue when it comes time to push out the centos-release rpms. this rpm installs repo config files like /etc/yum.repo.d/CentOS-Base.repo. Since the client system can't get out to the internet, any subsequent yum command displays an error about not enough mirrors.
Does any one know of a way to have either Spacewalk or yum exclude the /etc/yum.repos.d/ directory on install of the centos-release package.
It has to be an automated or configurable method as I currently run a manual command on each of the affected systems when I know that rpm is being pushed out. (/bin/rm /etc/yum.repo.d/CentOS-*.repo). I considered a cron job, but that just didn't seem like the best option.
Thanks in advance.
You can tell yum not to use a certain repository:
yum install --disablerepo=centos-base
or you can tell him to only use your repository by disabling all others:
yum install --disablerepo=* --enablerepo=myrepo
The solution I have seen in the past is to configure yum to not use the default location, but instead a different one. For example, /etc/yum.internal.repos.d/. Then anything that happens in the default location doesn't matter.
I have a hard time understanding where is the right place to place a code that will install the needed packages for the given docker container managed by dokku.
We have a scala application and, unfortunately, we need to have one shell call that is dependent on an environment. I would like to install the given package for the given container using "apt-get install". Right now I am using a custom plugin with a file named "post-release-build". However, I don't have the permission to install anything in that phase.
Basically, my script that should be invoked looks like this (based on a dockerfile that is available online):
apt-get update
apt-get install -y build-essential xorg libssl-dev libxrender-dev wget gdebi
wget http://download.gna.org/wkhtmltopdf/0.12/0.12.2.1/wkhtmltox-0.12.2.1_linux-trusty-amd64.deb
gdebi --n wkhtmltox-0.12.2.1_linux-trusty-amd64.deb
echo "-----> wkhtmltox installed!"
Is there a way how to make it work? I would also prefer to have such a file somewhere in the application so I don't need to setup environment before pushing the app (in the future).
EDIT:
I have found a plugin that should be capable of installing packages using apt-get (https://github.com/F4-Group/dokku-apt) however, I am a little bit unlucky because it downloads a package that is not working properly.
Since just downloading with apt-get will download a package that fails, I investigated deeper into dokku and came out with a new plugin that should install the package for you.
I have created a script, documented how to use it and licenced it over MIT license so feel free to use it. Hopefully it will save you the time I had to spend realizing what is going on.
URL: https://github.com/mbriskar/dokku-wkhtmltopdf
I'm attempting to create a local yum repo on my system containing various packages from, chiefly, the CentOS base repos. The server which is hosting the yum repo will not necessarily have the same base packages installed by default as the servers which will be using the yum repo. For this reason, I need to ensure that my repos contain the packages that I want and every single one of their dependencies.
I'm creating my repos using the yumdownloader tool provided in the yum-utils package to try to download an RPM file for a package using yum from the standard CentOS mirrors. Helpfully it provides a command line option, --resolve, which also downloads dependencies. However, because it's built on yum itself, yumdownloader will only download dependencies for the package that are not already present on the system.
For example, I wish to download package A, which depends on Packages B, C and D. If package D is already installed on the system, yumdownloader --resolve A will only download A, B and C, but not D.
Is there a way to download the RPMs for all dependencies on a package from a yum repo?
There's this bash script, which the maintainer of rpm has kindly shared with me, and I put on github. Hope you find it useful!
You can also read the original SO question, where the issue was discussed.
The script works on Fedora 23+ as it uses dnf's download plugin. It's probably very easy to make it work on Fedora 22-, as yum surely has got a similar plugin.
Additionaly, it's valuable since repotrack does not work on fedora 23 (at least it doesn't work for me).
After a lot of frustration looking around for a solution I have written a simple script that uses repotrace and wget. I've found that yumdownloader (even with the resolve flag) does not resolve all dependencies.
if you have a long list of packages you are bound to run into duplicates, downloading just the urls first with the "repotrack -u flag" and then getting unique records resolves having to download the same rpm multiple times.
#!/bin/bash
while read i; do
repotrack -u $i >> dep_rpm_urls_02.txt
done < list_of_packages_01.txt
awk '!seen[$0]++' dep_rpm_urls_02.txt > dep_rpm_urls_clean_03.txt
while read j; do
wget $j
echo dowloaded $j
done < dep_rpm_urls_clean_03.txt
happy rpming
I would like to change some code in one element X in gstreamer ugly plugin and rebuild and use it.
How I can do it?
I have gstreamer-0.10 and installed gstreamer-ugly plugin.
I would like to download only gstreamer0-10 ugly plugin code and change it and would like to use the new lib file. How I can do it?
unfortunately gstreamer-ugly depends on a lot of stuff in at least libgstreamer and plugins-base (if you're using linux and your distro provides *-dev packages as debian/ubuntu does).
If you're on debian you could use dpkg-buildpackage after checking out the source using apt-source. The big advantage here is that all the build dependencies can be easily installed.
The manual way will probably need you to first build all the other gstreamer packages have a close look on what ./configure tells you
I'm workin on debian and have already built gstreamer+plugins to backport the recent ones to ubuntu (although I'm not sure if I did it in a best-practice way ;) )
/edit: I'll try to cover the basic steps for ubuntu here:
add the source repositories to apt (check the "source code" checkbox in the ubuntu software center's "software sources" tool
sudo apt-get install dpkg-dev devscripts
sudo apt-get build-dep gst-plugins-ugly0.10
apt-get source gst-plugins-ugly0.10
change to the newly created gst-plugins-base* folder
dpkg-buildpackage (and make sure it works)
change the source to your needs
you can rebuild it any time using dpkg-buildpackage (to simply see if it compiles make might be faster though). This creates a .deb file in the parent folder that you can simply install using dpkg -i
If it's a useful change you might want to get in touch with the gstreamer-devs ;)
On a debian system, run apt-get build-dep gstreamer0.10-plugins-ugly to get all the build dependencies for that package. After that you can build the package from git, source tarball or even rebuild the debian package (using dkgp-buildpackage).