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atomist / sdm-pack-k8s

Extension Pack for an Atomist SDM to integrate Kubernetes deployments
Apache License 2.0
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Figure out how to aid migration from old deployments to new deployments #33

Closed ddgenome closed 5 years ago

ddgenome commented 5 years ago

When migrating from k8-automation to sdm-pack-k8s, the label selectors of the deployment will change. Unfortunately, the label selectors are immutable. We need to figure out a way to allow for a smooth transition for existing deployments.

ddgenome commented 5 years ago

After discussing with the team, we determined that the cost/benefit ratio for this workaround is upside down.

To migrate our existing deployments to the new style, we can just delete existing deployments, orphaning its child resources so they are not also deleted. Anytime after the replacement deployment is created after the next push, we can just delete the orphaned resources since one the new version registers, the old one will stop receiving events.