DLRN
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==== DLRN
DLRN builds and maintains yum repositories following OpenStack upstream commit streams. (DLRN is not an acronym or an abbreviation, and it can be pronounced "dee el arr en".)
Documentation is available at http://dlrn.readthedocs.org/en/latest/
Setup
.. code-block:: shell-session
# yum install git createrepo python-virtualenv mock gcc \
redhat-rpm-config rpmdevtools httpd libffi-devel \
openssl-devel yum-utils openldap-devel krb5-devel
Add the user you intend to run as to the mock group and login again.
.. code-block:: shell-session
$ git clone https://github.com/softwarefactory-project/DLRN.git
If you want to serve the built packages and the status reports, enable the httpd service, and then either add a section in the server configuration to map a URL to the data directories, or create a symbolic link:
.. code-block:: shell-session
# systemctl start httpd
# cd /var/www/html
# ln -s <datadir>/repos .
Preparing
.. code-block:: shell-session
$ cd DLRN
$ virtualenv ../dlrn-venv
$ . ../dlrn-venv/bin/activate
$ pip install --upgrade pip
$ pip install -r requirements.txt
$ python setup.py develop
Edit projects.ini
if needed.
Bootstrapping
Some of the projects require others to build. As a result, use the
special option --order
to build in the order computed from the
BuildRequires and Requires fields of the spec files when you bootstrap
your repository.
.. code-block:: shell-session
$ dlrn --order
When using this special option, a special variable repo_bootstrap
is defined in the specs, with a value of 1. You can use this variable if
needed, to break dependency loops between packages. For example:
.. code-block:: spec
%if 0%{?repo_bootstrap} == 0
BuildRequires: package-with-circular-dependency
%endif
Running
Once all the packages have been built once, you can get back to build the packages in the order of the timestamps of the commits.
.. code-block:: shell-session
$ dlrn
Troubleshooting
If you interrupt dlrn during mock build you might get an error
.. code-block:: shell-session
OSError: [Errno 16] Device or resource busy: '/var/lib/mock/dlrn-fedora-x86_64/root/var/cache/yum'
Solution is to clear left-over bind mount as root:
.. code-block:: shell-session
# umount /var/lib/mock/dlrn-fedora-x86_64/root/var/cache/yum
Other requirements
If the git clone operation fails for a package, DLRN will try to remove
the source directory using sudo. Please make sure the user running DLRN
can run rm -rf /path/to/dlrn/data/*
without being asked for a password,
otherwise DLRN will fail to process new commits.