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Enable HTTP2 by default
Update to enable HTTP2 by default, with the option to disable.
This is a continuation of #25280 for the 1.4 release. This should provide ample time for vetting.
/cc @krousey
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Track object modifications in fake clientset
Fake clientset is used by unit tests extensively but it has some
shortcomings:
- no filtering on namespace and name: tests that want to test objects in
multiple namespaces end up getting all objects from this clientset,
as it doesn't perform any filtering based on name and namespace;
- updates and deletes don't modify the clientset state, so some tests
can get unexpected results if they modify/delete objects using the
clientset;
- it's possible to insert multiple objects with the same
kind/name/namespace, this leads to confusing behavior, as retrieval is
based on the insertion order, but anchors on the last added object as
long as no more objects are added.
This change changes core.ObjectRetriever implementation to track object
adds, updates and deletes.
Some unit tests were depending on the previous (and somewhat incorrect)
behavior. These are fixed in the following few commits.
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[Refactor] Make QoS naming consistent across the codebase
@derekwaynecarr @vishh PTAL. Can one of you please attach a LGTM.
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Check if Cluster Autoscaler still works if there is an extra non-autoscaled node pool in the cluster
Follow up for issue https://github.com/kubernetes/contrib/issues/1283.
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Volume manager must verify containers terminated before deleting for ungracefully terminated pods
A pod is removed from volume manager (triggering unmount) when it is deleted from the kubelet pod manager. Kubelet deletes the pod from pod manager as soon as it receives a delete pod request. As long as the graceful termination period is non-zero, this happens after kubelet has terminated all containers for the pod. However, when graceful termination period for a pod is set to zero, the volume is deleted from pod manager *before* its containers are terminated.
This can result in volumes getting unmounted from a pod before all containers have exited when graceful termination is set to zero.
This PR prevents that from happening by only deleting a volume from volume manager once it is deleted from the pod manager AND the kubelet containerRuntime status indicates all containers for the pod have exited. Because we do not want to call containerRuntime too frequently, we introduce a delay in the `findAndRemoveDeletedPods()` method to prevent it from executing more frequently than every two seconds.
Fixes https://github.com/kubernetes/kubernetes/issues/27691
Running test in tight loop to verify fix.
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Include static docker binary in kubekins-test image
Fixes kubernetes/test-infra/issues/47.
I haven't pushed this image yet, so I expect CI to fail for now.
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Remove comment about empty selectors in the service spec
As discussed, removing the comment about empty selectors in Service specs.
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federation: Upgrading the groupversion to v1beta1
This PR contains 2 commits:
* Removing fields from Cluster API object that we are not using. This includes: Capacity, Allocatable and ClusterMeta.
* Move code and rename groupversion `federation/v1alpha1` to `federation/v1beta1`
cc @kubernetes/sig-cluster-federation
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Add two pd tests with default grace period
Add two tests in pd.go. They are same as the flaky test, but the pod deletion has default grace period
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Kubelet should mark VolumeInUse before checking if it is Attached
Kubelet should mark VolumeInUse before checking if it is Attached.
Controller should fetch fresh copy of node object before detach instead of relying on node informer cache.
Fixes#27836
Ensure that kublet marks VolumeInUse before checking if it is Attached.
Also ensures that the attach/detach controller always fetches a fresh
copy of the node object before detach (instead ofKubelet relying on node
informer cache).
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Refactored, expanded and fixed federated-services e2e tests.
1. Moved BeforeEach() and AfterEach() to an inner scope, to prevent clashes with Framework's BeforeEach() and AfterEach(). Morte to come on this, as it's a major bug in our use of Ginkgo, and affects many other tests.
2. Keep track of which clusters we have created namespaces in, so that we don't try to delete namespaces out of clusters that we didn't create them in (e.g. the primary cluster, where the framework already creates and deleted the required namespace).
3. Separate tests for federated service creation and verification that underlying services are created correctly.
4. For DNS resolution tests, create backend pods (and delete on cleanup) where required).
5. For non-local DNS resolution, delete a backend pod in one cluster to test, and in the remainder of clusters on cleanup.
6. Lots of refactoring to make code re-usable across multiple test.
7. Lots of debugging/fixing to make sure that everything that the testscreate are cleaned up properly afterwards, and don't clash with the cleanups done by the e2e Framework.
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TLS bootstrap API group (alpha)
This PR only covers the new types and related client/storage code- the vast majority of the line count is codegen. The implementation differs slightly from the current proposal document based on discussions in design thread (#20439). The controller logic and kubelet support mentioned in the proposal are forthcoming in separate requests.
I submit that #18762 ("Creating a new API group is really hard") is, if anything, understating it. I've tried to structure the commits to illustrate the process.
@mikedanese @erictune @smarterclayton @deads2k
```release-note-experimental
An alpha implementation of the the TLS bootstrap API described in docs/proposals/kubelet-tls-bootstrap.md.
```
[]()
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Dedent
Adding the dedent package and then applying it to the kubectl help commands. Also updating the documentation to reflect the use of dedent.
Using new fake clientset registry exposes the actual flow on pending
namespace finalization: get namespace, create finalizer, list pods and
delete namespace if there are no pods.
