The StatefulSet controller cleans up ControllerRevisions at the end of
the reconcile loop. If something goes wrong during reconcile, it bails
out without actually performing this step. This commit moves the cleanup
to a deferred function call to guarantee it will be executed.
Fixes issue: https://github.com/kubernetes/kubernetes/issues/85690
During EndpointSlice reconcilation, EndpointSliceTracker is supposed to
track expected EndpointSlice resource versions so that external changes
to them can be detected. But it actually tracked the stale resource
version and resulted in every Service was handled twice as it always
received an EndpointSlice update with a different resource version but
was actually created/updated by itself during the first processing.
Using t.Run() has some advantages:
- individual sub-tests can be selected with -run
- test failures are automatically associated with
the scenario, therefore the test name no longer
needs to be passed around
A "run" function is used primarily to avoid large indention changes,
but also because this can be used to extend the test with additional
parameters later on.
Add logic in service_controller to skip create/update
if finalizer from a different controller is found.
The newly added finalizer will be checked by other controllers
implementing ILB services to determine if a given service is
already being managed by service_controller.
Moved finalizer check into cloudprovider code.
added unit test to verify new finalizer.
Modified existing unit test to create a fake service so that
attach/remove finalizer step can be tested.
A transient issue might occur that causes an error to be returned by
InstanceID(). When this is ignored, the external cloud provider taint
will be removed and neither AddCloudNode() nor UpdateCloudNode() will
try to set a provider ID in the future.
By returning the error we can ensure that the external cloud provider
taint is not removed prematurely, allowing the operation to be retried
(until the provider ID can be set).
Preserve support for external cloud providers that do not use IDs by
continuing if a NotImplemented error is returned, making a distinction
between lack of support for provider IDs and an actual error.
Introduce pair of unit tests that show a provider ID will eventually
be set if an error is returned, unless that error is a NotImplemented,
in which case the external cloud provider taint will be removed.
