Returning an error will cause the deployment to be requeued. We should
just emit an event for deployments with overlapping selectors and silently
drop then out of the queue. This should be transitioned to a Condition
once we have them.
Automatic merge from submit-queue
Use updated deployment after rollback
@kubernetes/deployment
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1. When overlapping deployments are discovered, annotate them
2. Expose those overlapping annotations as warnings in kubectl describe
3. Only respect the earliest updated one (skip syncing all other overlapping deployments)
4. Use indexer instead of store for deployment lister
When a new rollout with a different size than the previous size of the
deployment is initiated then only the new replica set will notice the
new size. Old replica sets are not updated by the rollout path.
Changes:
* moved waiting for synced caches before starting any work
* refactored worker() to really quit on quit
* changed queue to a ratelimiting queue and added retries on errors
* deep-copy deployments before mutating - we still need to deep-copy
replica sets and pods
* rolling.go (has all the logic for rolling deployments)
* recreate.go (has all the logic for recreate deployments)
* sync.go (has all the logic for getting and scaling replica sets)
* rollback.go (has all the logic for rolling back a deployment)
* util.go (contains all the utilities used throughout the controller)
Leave back at deployment_controller.go all the necessary bits for
creating, setting up, and running the controller loop.
Also add package documentation.
Automatic merge from submit-queue
Proportionally scale paused and rolling deployments
Enable paused and rolling deployments to be proportionally scaled.
Also have cleanup policy work for paused deployments.
Fixes#20853Fixes#20966Fixes#20754
@bgrant0607 @janetkuo @ironcladlou @nikhiljindal
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Due to rounding down for maxUnavailable, we may end up with deployments
that have zero surge and unavailable pods something that 1) is not allowed
as per validation, 2) blocks deployments. If we end up in such a situation
set maxUnavailable to 1 on the theory that surge might not work due to
quota.