Added a PriorityRESTMapper that operates off of discovery information. I
made an auxiliary data type and function to help collect and organize
the information.
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Change eviction logic in NodeController and make it Zone-aware
Ref. #28832
This PR changes the behavior of the NodeController. From now on
```release-note
Change eviction policies in NodeController:
- add a "partialDisruption" mode, when more than 33% of Nodes in the zone are not Ready
- add "fullDisruption" mode, when all Nodes in the zone are not Ready
Eviction behavior depends on the mode in which NodeController is operating:
- if the new state is "partialDisruption" or "fullDisruption" we call a user defined function that returns a new QPS to use (default 1/10 of the default rate, and the default rate respectively),
- if the new state is "normal" we resume normal operation (go back to default limiter settings),
- if all zones in the cluster are in "fullDisruption" state we stop all evictions.
```
cc @wojtek-t @smarterclayton @davidopp
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Create client from API version passed in config or use default
When creating a client read the `GroupVersion` value passed in the `restclient.Config`. If the passed `GroupVersion` does not match current group or is not enabled fallback to default `GroupVersion` for that group.
This PR should allow accessing `ScheduledJob` properly in `batch/v2alpha1`.
@smarterclayton @deads2k @caesarxuchao @lavalamp ptal
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Kubelet: add fake kube runtime
Add a new fake kube runtime with kubelet using the new runtime API.
CC @yujuhong @Random-Liu
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pods which can not be admitted should return directly
if the pod can not be admitted, the code runPod(pod, retryDelay) should not be run.
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Add a flag for `kubectl expose`to set ClusterIP and allow headless services
- Use `--cluster-ip=None` to create a headless service
- Fixes#10294
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separate out api group storage registration
Moves RESTStorage creation for API groups out of master.go proper and makes dependencies clear.
This is prereq for being able to build the `RESTStorageProviders` as plugins.
@lavalamp This is the follow-on I promised.
@sttts ptal.
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add union registry for quota
Adds the ability to combine multiple quota registries together. Kube needs this for other types.
@derekwaynecarr
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Error out when any RS has more available pods then its spec replicas
Fixes#29559 (hopefully, if not the bot will open new issues for us)
@kubernetes/deployment
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Document space shuttle style in controller/volume
Reverts #28813 and #28111.
@xiang90, I really appreciate the effort that went into your PRs (and think, in general, code simplification is a worthwhile effort), but the style in this controller was intentional to ensure that every branch is covered. The verbosity and branchyness of this controller stores a lot of context and knowledge about how this subsystem is meant to function, so we need to put them back in.
@kubernetes/sig-storage
cc @jsafrane @saad-ali @matchstick @thockin @childsb @rootfs
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Use the CNI bridge plugin to set hairpin mode
Following up this part of #23711:
> I'd like to wait until containernetworking/cni#175 lands and then just pass the request through to CNI.
The code here just
* passes the required setting down from kubenet to CNI
* disables `DockerManager` from doing hairpin-veth, if kubenet is in use
Note to test you need a very recent version of the CNI `bridge` plugin; the one brought in by #28799 should be OK.
Also relates to https://github.com/kubernetes/kubernetes/issues/19766#issuecomment-232722864
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Add support to quota pvc storage requests
Adds support to quota cumulative `PersistentVolumeClaim` storage requests in a namespace.
Per our chat today @markturansky @abhgupta - this is not done (lacks unit testing), but is functional.
This lets quota enforcement for `PersistentVolumeClaim` to occur at creation time. Supporting bind time enforcement would require substantial more work. It's possible this is sufficient for many, so I am opening it up for feedback.
In the future, I suspect we may want to treat local disk in a special manner, but that would have to be a different resource altogether (i.e. `requests.disk`) or something.
Example quota:
```
apiVersion: v1
kind: ResourceQuota
metadata:
name: quota
spec:
hard:
persistentvolumeclaims: "10"
requests.storage: "40Gi"
```
/cc @kubernetes/rh-cluster-infra @deads2k
If the resource in the delete call does not exist, the runtime should
not return an error. This eliminates the need for kubelet to define a
resource "not found" error that every runtime has to return.
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pkg/various: plug leaky time.New{Timer,Ticker}s
According to the documentation for Go package time, `time.Ticker` and
`time.Timer` are uncollectable by garbage collector finalizers. They
leak until otherwise stopped. This commit ensures that all remaining
instances are stopped upon departure from their relative scopes.
Similar efforts were incrementally done in #29439 and #29114.
```release-note
* pkg/various: plugged various time.Ticker and time.Timer leaks.
```
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Update acquire to use newer JitterUntil vs. sleep
Fix to prevent https://github.com/kubernetes/kubernetes/issues/26782 which could have had a race on a 0 timer the way it was written before due to changes in wait.
I will likely make a PR for some of the recent changes in wait as well.
