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Mock and Koji


The purpose of this lab is to use and become familiar with the mock and koji tools.

Installation of Mock and Koji:

Mock: Mock is used to test the accuracy of the build dependances for RPMS. Alerting you if your package is missing any.

To get mock, I simply used YUM to grab and install it # yum install mock -y

I then have to add my user account to the mock users group # usermod -G

Koji: Is a build farm system which lets you test your build on different architectures that you might not have an access to.

Koji can be installed with a single step # yum install fedora-packager.

And then run /usr/bin/fedora-packager-setup  which creates the certificates to use Koji.

Using Mock:

In order to use mock, you need to have an SRPM built.

The syntax for using mock is # mock -r <configfile> <SRPMfile>

Here’s an example of one of the mock commands I used:

mock -r fedora-14-i386 rpmbuild/SRPMS/spell-1.1-1.fc15.src.rpm

The results of the mock command are sent to the /var/lib/distribution/result directory.

The distribution is determined by the distribution that was selected when the mock command was entered.

Here is an updated version of my RPM of spell : SPELL

Using Koji:

To build a package using Koji the command syntax is # koji  build dist-f14 –scratch rpmbuild/SRPMS/spell-1.1-1.fc15.src.rpm

The distribution to test the RPM on is F14(Fedora 14(32 and 64bit))

The RPM to be tested is spell-1.1-1.fc15.src.rpm

The –scratch specifies that the build is not committed to the fedora distribution.

Once the distribution has been uploaded to Koji, there will be a link which you can take to view the status of your build on Koji.

Here is one of mine : http://koji.fedoraproject.org/koji/taskinfo?taskID=3407241

The build is listed as closed because it has completed.

There is another method of tracking the status of your Koji build. By simply entering # koji watch-task taskID


So, my first experience using Mock and Koji were interesting. It was fun to upload and queue my package to the Koji build farm and be able to watch as a host picks up the task and builds it for me.

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