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Stable Release Updates for OpenStack and the Ubuntu Cloud Archive
The SRU process for OpenStack and the Ubuntu Cloud Archive (UCA) follows the same process as Ubuntu Stable Release Updates. This page summarises the process for the cloud archive and adds some points that apply specifically to it.
NOTE: This process is followed for OpenStack packages and supporting dependencies such as Open vSwitch and Ceph.
- Users of official releases expect a high degree of stability.
- It is critically important to treat SRUs with great caution.
- SRUs must be accompanied by a strong rationale and must present a low risk of regression.
- Minimizing risk tends to be well-correlated with minimizing the size of the change. As such, the same bug may need to be fixed in different ways in stable and development releases.
- Stable release updates will, in general, only be issued in order to fix:
New upstream stable point releases for OpenStack core packages which group several bug fixes together.
- High-impact bugs (e.g. security vulnerabilities, severe regressions, loss of user data).
- Bugs that are not high-impact, but have an obviously safe patch.
- Bugs must be fixed in the following order, when possible:
Upstream in the latest OpenStack release 
- The corresponding Ubuntu release 
- The corresponding UCA release
The bug can then be fixed in the same order for the prior OpenStack release:
- upstream stable
- corresponding Ubuntu release
- corresponding UCA release
 Landing a fix upstream may not always be possible, for example once the upstream branch is in critical-fix or security-fix only mode, or once it has reached EOL. See the OpenStack upstream stable branch policy, which specifies the various phases of support for stable branches, which are typically supported for 12 to 18 months. The case where a bug can't be fixed upstream first must be handled with extreme caution, since fixes would be released directly to the corresponding Ubuntu release without having landed upstream first.
 Landing a fix in a corresponding Ubuntu release may not always be possible, for example once the Ubuntu release has reached EOL and the UCA is still supported. This case must be handled with extreme caution, since fixes would be released directly to the corresponding UCA without having first landed in the corresponding Ubuntu release, and possibly also without having first landed in the upstream OpenStack release.
Once stable package updates have been accepted by the ubuntu-sru (or Cloud Archive) team into -proposed pockets, the following SRU verification process is followed:
Deployment and base configuration using OpenStack Charm Testing bundles and charms, using the current set of stable charms configured to consume packages from the proposed pocket of the archive.
Testing of the deployed Cloud using the Tempest (the OpenStack functional test project) smoke test target; this is approximately 100 tests from the full Tempest upstream function test suite that cover all core functions of the cloud. The deployed cloud is expected to pass all smoke tests.
For updates where there is risk of regression as a result of the package upgrade process, the same testing process is followed as above, deploying from archive excluding proposed, testing using Tempest, upgrading the deployed cloud to proposed and then re-verifying the cloud using Tempest.
This testing process is automated by the Ubuntu OpenStack CI system.
Additionally, any specific test cases covered in SRU bug reports should be explicitly tested as well.
== Begin SRU Template == [Impact] This release sports mostly bug-fixes and we would like to make sure all of our users have access to these improvements. The update contains the following package updates: * <TODO: Create list with package names and versions> [Test Case] The following SRU process was followed: https://wiki.ubuntu.com/OpenStack/StableReleaseUpdates In order to avoid regression of existing consumers, the OpenStack team will run their continuous integration test against the packages that are in -proposed. A successful run of all available tests will be required before the proposed packages can be let into -updates. The OpenStack team will be in charge of attaching the output summary of the executed tests. The OpenStack team members will not mark ‘verification-done’ until this has happened. [Regression Potential] In order to mitigate the regression potential, the results of the aforementioned tests are attached to this bug. [Discussion] <TODO: other background> == End SRU Template ==
Nominating a Bug for a Series
A sponsor can be asked to nominate a bug for a particular series. You can find the following sponsors in #ubuntu-server on freenode:
- To target an Ubuntu series: coreycb, jamespage, icey
- To target an Ubuntu Cloud Archive series: coreycb, jamespage, icey, dosaboy, wolsen
Getting permission to target a bug for a series:
To gain permission to target a bug for an Ubuntu series you must be a member of: https://launchpad.net/~ubuntu-bugcontrol
To gain permission to target a bug for an Ubuntu Cloud Archive series you must be a member of: https://launchpad.net/~ubuntu-cloud-archive-bugs
Nominating a new package for an SRU Exception
To propose adding a new package to this exception, you should send an email to firstname.lastname@example.org that requests inclusion for the named package, as well as a justification of why it can be included. For example:
== Begin Exception Template == Subject: Request New OpenStack SRU Exception for Heat Hello SRU Team, I'd like to request that Heat be included in the OpenStack SRU Exception list at https://wiki.ubuntu.com/OpenStack/StableReleaseUpdates. Heat is the orchestration project in OpenStack. Heat is already included in our regression testing and is validated via Tempest smoke tests. Thanks, Me == End Exception Template ==
Getting Package Source
Depending on the package and the release, there are different ways to download the package source:
Packages can be retrieved from Launchpad with the pull-lp-source tool:
pull-lp-source <package> [release|version] (e.g. pull-lp-source python-oslo.messaging bionic)
- Packages can be retrieved from the UCA with the pull-uca-source tool:
pull-uca-source <package> [release|version] (e.g. pull-uca-source python-oslo.messaging queens)