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allow watching old resources with kubectl
Right now, one can not watch a resource with kubectl whose resourceVersion is outside the etcd watch window. Specifying resourceVersion=0 returns the current object, then watches from the current index.
This PR changes the logic to use resourceVersion=0, which will work regardless of the resourceVersion of the object, and discard the first event if --watch-only is specified.
@ncdc @aveshagarwal
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.
