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Remove out of date TODO
**What this PR does / why we need it**:
Since https://github.com/kubernetes/kubernetes/issues/17384 has done, we can remove out of data TODO
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Add several validation to persistent volume
**What this PR does / why we need it**:
Add several unit test for persistent volume validation
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Switch internal scale type to autoscaling, enable apps/v1 scale subresources
xref #49504
* Switch workload internal scale type to autoscaling.Scale (internal-only change)
* Enable scale subresources for apps/v1 deployments, replicasets, statefulsets
```release-note
NONE
```
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Add apelisse to some OWNERS
I wrote most of this code anyway.
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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apiserver shutdown gracefully
**What this PR does / why we need it**:
apiserver shutdown gracefully and wait all non-long running requests finish before process exit.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#54793
**Special notes for your reviewer**:
remove waitGroup, use atomic to count.
**Release note**:
```release-note
NONE
```
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Capture git export-subst strings in version.sh for 'git archive' use.
Eliminate the need to update pkg/version/base.go on release branch tagging.
This excellent solution brought to you by @ixdy.
- [ ] Cherrypick to release-1.8
- [ ] Cherrypick to release-1.7
- [ ] Cherrypick to release-1.6?
- [ ] Update kubernetes/release/anago to skip updating base.go files
ref https://github.com/kubernetes/release/pull/459
ref #16815 (somewhat related)
cc @javier-b-perez
Automatic merge from submit-queue (batch tested with PRs 55265, 54092, 55353, 53733, 55385). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Rearrange kubelet networking codes
**What this PR does / why we need it**:
kubelet package contains multiple `*network.go` files, also some of the networking related codes scatter in different places. This PR rearranges the networking codes into `kubelet_network.go`. There is no functional changes.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#55451
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Support completions for kubectl config rename-context
**What this PR does / why we need it**:
With this PR, kubectl config rename-context supports completion for current context.
```
$ kubectl config rename-context <tab>
cluster01 minikube
```
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
Support completion for kubectl config rename-context
```
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Add MutatingWebhookConfiguration type
As part of Mutating Webhook support, this PR adds the configuration for Mutating webhooks. It also renames existing ReadOnly webhook configurations from ExternalAdmissionHookConfiguration to ValidatingWebhookConfiguration. As part of the process some sub-types are also renamed.
Lastly, the mutating webhook configurations are sorted by name to make the serial executing of them deterministic.
ref: https://github.com/kubernetes/features/issues/492
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Updating NewCIDRSet return a value
**What this PR does / why we need it**:
Updating NewCIDRSet return value
For IPv6, NewCIDRSet was updated to return an error if the subnet mask size
is too big. In this case, NewCIDRSet will fail and return an error.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#52348
**Special notes for your reviewer**:
**Release note**:
```release-note
```
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kubectl config get-contexts: sort output
This sorts the output of kubectl config get-contexts because the ordering is otherwise non-stable and makes it harder to find the context you're looking for when you have more than a few.
```release-note
The output of kubectl config get-contexts is now sorted alphabetically by the context name.
```
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code-generator: add NewFilteredSharedInformerFactory function
**What this PR does / why we need it**:
Adds a `namespace` option to the SharedInformerFactory constructor. This is useful when building controllers that may need to scope themselves to a namespace due to RBAC constraints.
Workarounds for this involve losing type safety if a user wants to use it for core APIs as well as a SharedInformerFactory type interface, as we have to deal with plain SharedIndexInformers (example here: https://github.com/jetstack-experimental/cert-manager/blob/master/pkg/util/kube/factory.go)
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
Fixes https://github.com/kubernetes/code-generator/issues/9
**Special notes for your reviewer**:
This will require updating all uses of SharedInformerFactory throughout the codebase. I'm going to follow up with later commits in this PR with these changes, but wanted to get this here to get some feedback on the way it's implemented.
**Release note**:
```release-note
NONE
```
/cc @sttts @nikhita @deads2k
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tolerate discovery errors in the restmapper
Found this while investigating a related problem. The restmapper can use the information it has found. It doesn't have to discard all of it.
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validation to GPU and hugepages in creating LimitRange
**What this PR does / why we need it**:
validate if default and defaultRequest match when creating LimitRange for GPU and hugepages.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#54917
**Special notes for your reviewer**:
**Release note**:
```release-note
validate if default and defaultRequest match when creating LimitRange for GPU and hugepages.
```
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kubectl/config/rename: fix wording
Using `Context %q renamed to %q.` in rename-context to be consistent with other
commands like delete-context, set-context, use-context.
/sig cli
/release-note none
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Implement dummy device operation by netlink for ipvs proxier
**What this PR does / why we need it**:
Currently, we implement network interface operations, e.g. create a dummy device and delete a dummy interface via ip cmd and then collect the exist code. For example, we assume the following command:
```
ip link add kube-ipvs0 type dummy
```
returns 2 means the dummy device `kube-ipvs0` exists, see https://github.com/kubernetes/kubernetes/blob/master/pkg/proxy/ipvs/proxier.go#L1529 .
However, from the man page of ip command, exit status 2 just means an error was reported by the kernel, see http://man7.org/linux/man-pages/man8/ip.8.html#EXIT_STATUS.
So, that's a bug.
This PR implements dummy device operation by netlink for ipvs proxier so that can get ride of ip command operations.
**Which issue this PR fixes**:
fixes#54054
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/sig network
/area kube-proxy
/kind bug
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remove unused function in keymutex_test.go file
**What this PR does / why we need it**:
remove unused function in keymutex_test.go file
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Restore kube-proxy's support for 0 values for conntrack settings
**What this PR does / why we need it**: re-allow 0 values for kube-proxy conntrack min, max, max per core, tcp close wait timeout, tcp established timeout.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#50787
**Special notes for your reviewer**:
- I adjusted validation to allow for 0 values for some of the conntrack settings, as otherwise the "leave the limit as-is" logic wouldn't be allowed.
- I moved the loading of the config file from the cobra command's Validate method to Complete. This way, the config is fully resolved before validation happens. Otherwise, it just validates the default config values first, and _then_ the config is loaded.
- I think I got all the default values & nil checking correct, but please review carefully!
**Release note**:
```release-note
Restored kube-proxy's support for 0 values for conntrack min, max, max per core, tcp close wait timeout, and tcp established timeout.
```
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kubenet: disable DAD in the container.
Since kubenet externally guarantees that IP address will not conflict, we can short-circuit the kernel's normal wait. This lets us avoid the 1 second network wait.
**What this PR does / why we need it**:
Fixes the pod startup latency identified in #54651 and #55060
**Release note**:
```release-note
NONE
```
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update ipvs readme file
Add the way to choose ipvs mode when using kubeadm with a configuration file
**Release note**:
```release-note
NONE
```
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Fix lint errors in kubeproxyconfig types.
**What this PR does / why we need it**:
Fix some outstanding lint errors reported by k8s-ci-robot in https://github.com/kubernetes/kubernetes/pull/53645/files#r149212051.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#53645
**Special notes for your reviewer**:
/cc @cblecker @ncdc
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 54773, 52523, 47497, 55356, 49429). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Deduplicate RC/RS controller code.
The code was already 99% similar between RC and RS. This is a wild idea to try to deduplicate the two controllers in a type-safe manner without adding tons of boilerplate, and without using code generation.
They are still separate resources and separate worker pools. This is a refactor that isn't intended to change any behavior.
```release-note
ReplicationController now shares its underlying controller implementation with ReplicaSet to reduce the maintenance burden going forward. However, they are still separate resources and there should be no externally visible effects from this change.
```
ref #49429
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Add ephemeral storage e2e tests
Add e2e tests of limitrange/quota/downward_api for local ephemeral storage
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: part of #52463
**Special notes for your reviewer**:
Add e2e tests of limitrange/quota/downwardapi for local ephemeral storage
**Release note**:
```release-note
Add limitrange/resourcequota/downward_api e2e tests for local ephemeral storage
```
/assign @jingxu97
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Support copying "options" in resolv.conf into pod sandbox when dnsPolicy is Default
**What this PR does / why we need it**:
This PR adds support for copying "options" from host's /etc/resolv.conf (or --resolv-conf) into pod's resolv.conf when dnsPolicy is Default. Being able to customize options is important because it is common to leverage options to fine-tune the behavior of DNS client.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#42542
**Special notes for your reviewer**:
I originally wanted to also tackle the issue of copying options for when dnsPolicy is ClusterFirst, but with ability to "merge" with default options (ndots:5 more specifically) when it makes sense. I decided to leave it off for now because the "merging" may need more discussions. Happy to add that to this PR or create another PR for that if it makes sense and is clear what should be done. I think even when dnsPolicy is ClusterFirst it is important to allow customization.
**Release note**:
```kubelet: add support for copying "options" from /etc/resolv.conf (or --resolv-conf if it is used) into pod's /etc/resolv.conf when dnsPolicy is Default.```
