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Cirrus-CI provides KVM in their Linux containers, so we can also run our VM-based NetBSD and OpenBSD build jobs there. Since the VM installation might take a while, we only run the "help" target on the first invocation to avoid timeouts, and then only check the build during the next run, once the base image has been cached. For the the build tests, we also only use very a limited set of target CPUs since compiling in these VMs is not very fast (especially the build on OpenBSD seems to be incredibly slow). The jobs are marked as "manual" only, since this double-indirect setup (with the cirrus-run script and VMs in the Cirrus-CI containers) might fail more often than the other jobs, and since we can trigger a limited amount of Cirrus-CI jobs at a time anyway (due to the restrictions in the free tier of Cirrus). Thus these jobs are rather added as convenience for contributors who would like to run the NetBSD/OpenBSD tests without the need of downloading and installing the corresponding VM images on their local machines. Message-Id: <20211209103124.121942-1-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> |
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| .. | ||
| build.yml | ||
| freebsd-12.vars | ||
| freebsd-13.vars | ||
| kvm-build.yml | ||
| macos-11.vars | ||
| README.rst | ||
Cirrus CI integration
=====================
GitLab CI shared runners only provide a docker environment running on Linux.
While it is possible to provide private runners for non-Linux platforms this
is not something most contributors/maintainers will wish to do.
To work around this limitation, we take advantage of `Cirrus CI`_'s free
offering: more specifically, we use the `cirrus-run`_ script to trigger Cirrus
CI jobs from GitLab CI jobs so that Cirrus CI job output is integrated into
the main GitLab CI pipeline dashboard.
There is, however, some one-time setup required. If you want FreeBSD and macOS
builds to happen when you push to your GitLab repository, you need to
* set up a GitHub repository for the project, eg. ``yourusername/qemu``.
This repository needs to exist for cirrus-run to work, but it doesn't need to
be kept up to date, so you can create it and then forget about it;
* enable the `Cirrus CI GitHub app`_ for your GitHub account;
* sign up for Cirrus CI. It's enough to log into the website using your GitHub
account;
* grab an API token from the `Cirrus CI settings`_ page;
* it may be necessary to push an empty ``.cirrus.yml`` file to your github fork
for Cirrus CI to properly recognize the project. You can check whether
Cirrus CI knows about your project by navigating to:
``https://cirrus-ci.com/yourusername/qemu``
* in the *CI/CD / Variables* section of the settings page for your GitLab
repository, create two new variables:
* ``CIRRUS_GITHUB_REPO``, containing the name of the GitHub repository
created earlier, eg. ``yourusername/qemu``;
* ``CIRRUS_API_TOKEN``, containing the Cirrus CI API token generated earlier.
This variable **must** be marked as *Masked*, because anyone with knowledge
of it can impersonate you as far as Cirrus CI is concerned.
Neither of these variables should be marked as *Protected*, because in
general you'll want to be able to trigger Cirrus CI builds from non-protected
branches.
Once this one-time setup is complete, you can just keep pushing to your GitLab
repository as usual and you'll automatically get the additional CI coverage.
.. _Cirrus CI GitHub app: https://github.com/marketplace/cirrus-ci
.. _Cirrus CI settings: https://cirrus-ci.com/settings/profile/
.. _Cirrus CI: https://cirrus-ci.com/
.. _cirrus-run: https://github.com/sio/cirrus-run/