OpenStack Networking (Neutron)
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Neutron Third-party CI

What Is Expected of Third Party CI System for Neutron

As of the Liberty summit, Neutron no longer requires a third-party CI, but it is strongly encouraged, as internal neutron refactoring can break external plugins and drivers at any time.

Neutron expects any Third Party CI system that interacts with gerrit to follow the requirements set by the Infrastructure team1 as well as the Neutron Third Party CI guidelines below. Please ping the PTL in #openstack-neutron or send an email to the openstack-discuss ML (with subject [neutron]) with any questions. Be aware that the Infrastructure documentation as well as this document are living documents and undergo changes. Track changes to the infrastructure documentation using this url2 (and please review the patches) and check this doc on a regular basis for updates.

What Changes to Run Against

If your code is a neutron plugin or driver, you should run against every neutron change submitted, except for docs, tests, tools, and top-level setup files. You can skip your CI runs for such exceptions by using skip-if and all-files-match-any directives in Zuul. You can see a programmatic example of the exceptions here3.

If your code is in a neutron-*aas repo, you should run against the tests for that repo. You may also run against every neutron change, if your service driver is using neutron interfaces that are not provided by your service plugin (e.g. loadbalancer/ If you are using only plugin interfaces, it should be safe to test against only the service repo tests.

What Tests To Run

Network API tests (git link). Network scenario tests (The test_network* tests here). Any tests written specifically for your setup.

Run with the test filter: 'network'. This will include all neutron specific tests as well as any other tests that are tagged as requiring networking. An example tempest setup for devstack-gate:

export DEVSTACK_GATE_TEMPEST_REGEX='(?!.*\[.*\bslow\b.*\])((network)|(neutron))'

An example setup for LBaaS:

export DEVSTACK_GATE_TEMPEST_REGEX='(?!.*\[.*\bslow\b.*\])(alancer|SimpleReadOnlyNeutron|'

Third Party CI Voting

The Neutron team encourages you to NOT vote -1 with a third-party CI. False negatives are noisy to the community, and have given -1 from third-party CIs a bad reputation. Really bad, to the point of people ignoring them all. Failure messages are useful to those doing refactors, and provide you feedback on the state of your plugin.

If you insist on voting, by default, the infra team will not allow voting by new 3rd party CI systems. The way to get your 3rd party CI system to vote is to talk with the Neutron PTL, who will let infra know the system is ready to vote. The requirements for a new system to be given voting rights are as follows:

  • A new system must be up and running for a month, with a track record of voting on the sandbox system.
  • A new system must correctly run and pass tests on patches for the third party driver/plugin for a month.
  • A new system must have a logfile setup and retention setup similar to the below.

Once the system has been running for a month, the owner of the third party CI system can contact the Neutron PTL to have a conversation about getting voting rights upstream.

The general process to get these voting rights is outlined here. Please follow that, taking note of the guidelines Neutron also places on voting for it's CI systems.

A third party system can have it's voting rights removed as well. If the system becomes unstable (stops running, voting, or start providing inaccurate results), the Neutron PTL or any core reviewer will make an attempt to contact the owner and copy the openstack-discuss mailing list. If no response is received within 2 days, the Neutron PTL will remove voting rights for the third party CI system. If a response is received, the owner will work to correct the issue. If the issue cannot be addressed in a reasonable amount of time, the voting rights will be temporarily removed.

Log & Test Results Filesystem Layout

Third-Party CI systems MUST provide logs and configuration data to help developers troubleshoot test failures. A third-party CI that DOES NOT post logs should be a candidate for removal, and new CI systems MUST post logs before they can be awarded voting privileges.

Third party CI systems should follow the filesystem layout convention of the OpenStack CI system. Please store your logs as viewable in a web browser, in a directory structure. Requiring the user to download a giant tarball is not acceptable, and will be reason to not allow your system to vote from the start, or cancel it's voting rights if this changes while the system is running.

At the root of the results - there should be the following:

  • console.html.gz - contains the output of stdout of the test run
  • local.conf / localrc - contains the setup used for this run
  • logs - contains the output of detail test log of the test run

The above "logs" must be a directory, which contains the following:

  • Log files for each screen session that DevStack creates and launches an OpenStack component in
  • Test result files
  • testr_results.html.gz
  • tempest.txt.gz

List of existing plugins and drivers