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.. _ci_var:
Custom CI/CD variables
======================
QEMU CI pipelines can be tuned by setting some CI environment variables.
Set variable globally in the user's CI namespace
------------------------------------------------
Variables can be set globally in the user's CI namespace setting.
For further information about how to set these variables, please refer to::
https://docs.gitlab.com/ee/ci/variables/#add-a-cicd-variable-to-a-project
Set variable manually when pushing a branch or tag to the user's repository
---------------------------------------------------------------------------
Variables can be set manually when pushing a branch or tag, using
git-push command line arguments.
Example setting the QEMU_CI_EXAMPLE_VAR variable:
.. code::
git push -o ci.variable="QEMU_CI_EXAMPLE_VAR=value" myrepo mybranch
For further information about how to set these variables, please refer to::
https://docs.gitlab.com/ee/user/project/push_options.html#push-options-for-gitlab-cicd
Setting aliases in your git config
----------------------------------
You can use aliases to make it easier to push branches with different
CI configurations. For example define an alias for triggering CI:
.. code::
git config --local alias.push-ci "push -o ci.variable=QEMU_CI=1"
git config --local alias.push-ci-now "push -o ci.variable=QEMU_CI=2"
Which lets you run:
.. code::
git push-ci
to create the pipeline, or:
.. code::
git push-ci-now
to create and run the pipeline
Variable naming and grouping
----------------------------
The variables used by QEMU's CI configuration are grouped together
in a handful of namespaces
* QEMU_JOB_nnnn - variables to be defined in individual jobs
or templates, to influence the shared rules defined in the
.base_job_template.
* QEMU_CI_nnn - variables to be set by contributors in their
repository CI settings, or as git push variables, to influence
which jobs get run in a pipeline
* QEMU_CI_CONTAINER_TAG - the tag used to publish containers
in stage 1, for use by build jobs in stage 2. Defaults to
'latest', but if running pipelines for different branches
concurrently, it should be overridden per pipeline.
* nnn - other misc variables not falling into the above
categories, or using different names for historical reasons
and not yet converted.
Maintainer controlled job variables
-----------------------------------
The following variables may be set when defining a job in the
CI configuration file.
QEMU_JOB_CIRRUS
~~~~~~~~~~~~~~~
The job makes use of Cirrus CI infrastructure, requiring the
configuration setup for cirrus-run to be present in the repository
QEMU_JOB_OPTIONAL
~~~~~~~~~~~~~~~~~
The job is expected to be successful in general, but is not run
by default due to need to conserve limited CI resources. It is
available to be started manually by the contributor in the CI
pipelines UI.
QEMU_JOB_ONLY_FORKS
~~~~~~~~~~~~~~~~~~~
The job results are only of interest to contributors prior to
submitting code. They are not required as part of the gating
CI pipeline.
QEMU_JOB_SKIPPED
~~~~~~~~~~~~~~~~
The job is not reliably successsful in general, so is not
currently suitable to be run by default. Ideally this should
be a temporary marker until the problems can be addressed, or
the job permanently removed.
QEMU_JOB_PUBLISH
~~~~~~~~~~~~~~~~
The job is for publishing content after a branch has been
merged into the upstream default branch.
QEMU_JOB_AVOCADO
~~~~~~~~~~~~~~~~
The job runs the Avocado integration test suite
Contributor controlled runtime variables
----------------------------------------
The following variables may be set by contributors to control
job execution
QEMU_CI
~~~~~~~
By default, no pipelines will be created on contributor forks
in order to preserve CI credits
Set this variable to 1 to create the pipelines, but leave all
the jobs to be manually started from the UI
Set this variable to 2 to create the pipelines and run all
the jobs immediately, as was historicaly behaviour
QEMU_CI_AVOCADO_TESTING
~~~~~~~~~~~~~~~~~~~~~~~
By default, tests using the Avocado framework are not run automatically in
the pipelines (because multiple artifacts have to be downloaded, and if
these artifacts are not already cached, downloading them make the jobs
reach the timeout limit). Set this variable to have the tests using the
Avocado framework run automatically.
Other misc variables
--------------------
These variables are primarily to control execution of jobs on
private runners
AARCH64_RUNNER_AVAILABLE
~~~~~~~~~~~~~~~~~~~~~~~~
If you've got access to an aarch64 host that can be used as a gitlab-CI
runner, you can set this variable to enable the tests that require this
kind of host. The runner should be tagged with "aarch64".
AARCH32_RUNNER_AVAILABLE
~~~~~~~~~~~~~~~~~~~~~~~~
If you've got access to an armhf host or an arch64 host that can run
aarch32 EL0 code to be used as a gitlab-CI runner, you can set this
variable to enable the tests that require this kind of host. The
runner should be tagged with "aarch32".
S390X_RUNNER_AVAILABLE
~~~~~~~~~~~~~~~~~~~~~~
If you've got access to an IBM Z host that can be used as a gitlab-CI
runner, you can set this variable to enable the tests that require this
kind of host. The runner should be tagged with "s390x".
CENTOS_STREAM_8_x86_64_RUNNER_AVAILABLE
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If you've got access to a CentOS Stream 8 x86_64 host that can be
used as a gitlab-CI runner, you can set this variable to enable the
tests that require this kind of host. The runner should be tagged with
both "centos_stream_8" and "x86_64".
|
