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Release Checklist

This document describes how to release a new Workflow version. It's targeted toward the Deis core maintainers.

The below sections present a step-by-step guide to publish a new Workflow release. Throughout all of the examples, we'll be assuming that the below four environment variables are present wherever you're working. Make sure to set them (e.g. by exporting them) before you get started.

  • $WORKFLOW_RELEASE - the full name of this version. For example, v2.0.0-rc2 for a pre-release version or v2.0.0 otherwise.
  • $WORKFLOW_RELEASE_SHORT - The short name of this version. For example, rc2 for a pre-release version or identical to $WORKFLOW_RELEASE above otherwise.
  • $WORKFLOW_PREV_RELEASE - the full name of the previous version. For example, v2.0.0-rc1 for a pre-release version or v2.0.0 otherwise.
  • $WORKFLOW_PREV_RELEASE_SHORT - The short name of the previous version. For example, rc1 for a pre-release version or identical to $WORKFLOW_PREV_RELEASE above otherwise.

What's a Release?

A release consists of the following artifacts:

  1. Docker images with $WORKFLOW_RELEASE tags for each Deis Workflow component:
  1. A new Helm Classic chart for Workflow that references all of the new images referenced above. For example, if $WORKFLOW_RELEASE is 2.0.0-v2.0.0, the new chart would be in a new directory called workflow-v2.0.0.

Step 1: Cut repo branches and push image tags

Once the release milestone is cleared of tickets in the workflow component repos, the release branches can be cut.

If only a particular repo is ready, navigate to said repo and:

    git checkout master && git pull upstream master
    git checkout -b release-$WORKFLOW_RELEASE && git push upstream release-$WORKFLOW_RELEASE

Otherwise, for bulk-cutting all repos at the same time, run the following command:

deisrel branches create --name="release-${WORKFLOW_RELEASE} --ref="master" --yes=true

Step 2: Update Jenkins Jobs

We'll need to update the WORKFLOW_RELEASE value used by all relevant Jenkins jobs, particularly so the workflow-test-release job can kick off automatically once the release-${WORKFLOW_RELEASE} branch is pushed to in Step 3 below. Update this value in the common.groovy file and push this change to master:

  git clone git@github.com:deis/jenkins-jobs.git
  # update WORKFLOW_RELEASE value
  git commit -a -m "chore(workflow-$WORKFLOW_RELEASE_SHORT): update WORKFLOW_RELEASE"
  git push upstream HEAD:master

!!! note

As of this writing, the e2e tests run on a GKE cluster using default internal (minio) storage. The e2e tests can run using supported external storage permutations via the [storage_backend_e2e](https://ci.deis.io/job/storage_backend_e2e/) job, providing `STORAGE_TYPE` of 'gcs' and 'aws', along with the `HELM_REMOTE_BRANCH` updated to `release-${WORKFLOW_RELEASE}` after the release chart is created in `Step 3` below.

Step 3: Create New Helm Classic Charts

Next, we'll create new Helm Classic charts so that we can "stage" a version of our release for testing. Here is the current process to do so:

  1. Checkout the release-$WORKFLOW_RELEASE branch in deis/charts (created in Step 1.1 above):

    git fetch upstream git checkout release-$WORKFLOW_RELEASE

  2. Download the deisrel binary via the links provided in the project's README. Once downloaded, place the binary in your $PATH.

  3. Copy the current dev charts into new workflow-$WORKFLOW_RELEASE_SHORT charts:

    cp -r workflow-dev workflow-$WORKFLOW_RELEASE_SHORT cp -r workflow-dev-e2e workflow-$WORKFLOW_RELEASE_SHORT-e2e cp -r router-dev router-$WORKFLOW_RELEASE_SHORT

  4. Stage copies of all files needing release updates into the appropriate chart directories created above, supplying --ref release-$WORKFLOW_RELEASE to specify this branch/ref for lookup of latest commit shas (informing generate_params.toml), as well as --stagingDir <appropriate staging dir> to inform deisrel where to put updated files:

    deisrel helm-stage --ref release-$WORKFLOW_RELEASE --stagingDir workflow-$WORKFLOW_RELEASE_SHORT workflow deisrel helm-stage --ref release-$WORKFLOW_RELEASE --stagingDir workflow-$WORKFLOW_RELEASE_SHORT-e2e e2e deisrel helm-stage --ref release-$WORKFLOW_RELEASE --stagingDir router-$WORKFLOW_RELEASE_SHORT router

  5. Delete the KUBERNETES_POD_TERMINATION_GRACE_PERIOD_SECONDS env var from workflow-$WORKFLOW_RELEASE_SHORT/tpl/deis-controller-rc.yaml

  6. Test the new Workflow chart and make sure it installs:

    cp -r workflow-$WORKFLOW_RELEASE_SHORT* helmc home/workspace/charts helmc generate workflow-$WORKFLOW_RELEASE_SHORT helmc install workflow-$WORKFLOW_RELEASE_SHORT

Optionally, run the e2e tests as well:

    helmc generate workflow-$WORKFLOW_RELEASE_SHORT-e2e
    helmc install workflow-$WORKFLOW_RELEASE_SHORT-e2e

  1. Commit your changes:

    git commit -a -m "chore(workflow-$WORKFLOW_RELEASE_SHORT): releasing workflow-$WORKFLOW_RELEASE_SHORT(-e2e)"

  2. Push your changes:

    git push upstream HEAD:release-$WORKFLOW_RELEASE

  3. Open a pull request from your branch to merge into master on https://github.com/deis/charts

Step 4: Update Documentation

Create a new pull request against deis/workflow, updating all references of the old release to $WORKFLOW_RELEASE. Use git grep $WORKFLOW_PREV_RELEASE and git grep $WORKFLOW_PREV_RELEASE_SHORT to find any references. (Be careful not to change CHANGELOG.md)

Also, note there may be occurrences of an older release (prior to $WORKFLOW_PREV_RELEASE) in upgrading-workflow.md. These should be changed to $WORKFLOW_PREV_RELEASE.

Step 5: Manual Testing

After the chart is created with the immutable Docker image tags that represent the final images (i.e. the ones that will be re-tagged to the immutable release tag, such as v2.0.0), it should be manually tested by as many people as possible. Special attention should be paid to the user experience, both from an operator and developer perspective.

Our goal is to test with as many object storage and Kubernetes installation configurations as possible, to ensure there are no gaps in configuration or functionality. See below for a sample testing matrix.

Object Storage / Kubernetes Install Kube-Solo Google Container Engine AWS Micro-Kube Vagrant
Default (Minio)
Google Cloud Storage
Amazon S3

!!! note

If bugs are found and fixes are made, do the following:

- PR the fix, get it reviewed and merged into master of component repo(s)
- git cherry-pick <issue_fix_sha> into the `release-$WORKFLOW_RELEASE` branch(es) of component repo(s)
- the component's `<component>-release` [Jenkins job](https://ci.deis.io) watches for the push to the release branch and will trigger building and deploying  the `git-<issue_fix_sha>` Docker image.
- update the appropriate component's `dockerTag` value in the release chart with the `git-<issue_fix_sha>` as deployed above.
- push updated chart change(s) to existing release branch and re-convene testing

When testing shows no further issues and the release chart is ready to ship, make sure the pull request is reviewed once more and merged before continuing.

!!! note

If non-release-specific amendments have been made to the release chart that do
not exist in the `workflow-dev`, be sure to PR said changes for this chart as well.

Step 6: Tag and Push Docker Images

It's time to retag each individual Docker image with the 'official' $WORKFLOW_RELEASE value in the deis quay.io org.

To do so, simply run the following deisrel command:

deisrel docker retag $WORKFLOW_RELEASE --new-org="deis -ref release-$WORKFLOW_RELEASE"

Step 7: Update Changelogs

At this point, part of the first part and all of the second part of the release is complete. That is, the Helm Classic chart for the new Workflow version is done, and new Docker versions for all components are done.

The remaining work is simply generating changelogs and tagging each component's GitHub repository.

First, create a branch for the new changelog:

git checkout -b release-$WORKFLOW_RELEASE_SHORT

To generate changelogs, run the below command in each repository. Ensure that $PREVIOUS_TAG is the previous tag that was generated in the repository.

deisrel changelog individual $REPO_NAME $PREVIOUS_TAG $CURRENT_SHA $WORKFLOW_RELEASE

This command will output the new changelog entry to STDOUT. Copy it and prepend it to the existing CHANGELOG.md file.

Finally, commit, push and submit a pull request for your changes:

git commit CHANGELOG.md -m "doc(CHANGELOG.md): add entry for $WORKFLOW_RELEASE"
git push -u $YOUR_FORK_REMOTE release-$WORKFLOW_RELEASE_SHORT

Before you continue, ensure pull requests in all applicable repositories are reviewed, and merge them.

Step 8: Tag and Push Git Repositories

The final step of the release process is to tag each git repository, and push the tag to each GitHub project. To do so, simply run the below command in the deisrel repository:

deisrel git tag --ref release-$WORKFLOW_RELEASE $WORKFLOW_RELEASE

Step 9: Close GitHub Milestones

Close the github milestone by creating a new pull request at seed-repo. Any changes merged to master on that repository will be applied to all of the component projects. If there are open issues attached to the milestone, move them to the next upcoming milestone before merging the pull request.

Step 10: Let Everyone Know

Jump in #company on slack and let folks know that the release has been cut! This will let folks in supporting functions know that they should start the release support process including summary blog posts, tweets, notes for the monthly newsletter updates, etc.

Provide a gist to the aggregated release notes. We can generate the aggregated changelog data from deisrel:

deisrel changelog global $PREVIOUS_TAG $WORKFLOW_RELEASE

You are now done with the release.