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Remove ClientSetForVersion & ClientConfigForVersion from factory
**What this PR does / why we need it**:
This is further cleaning the factory.
**Special notes for your reviewer**:
/assign @deads2k
**Release note**:
```release-note
NONE
```
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Improve etcd-version-monitor etcd 3.0-3.1 compatibility
In etcd-version-monitor, this remove grpc labels used only in etcd 3.1+ format when translating metric back to 3.0 format
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Add CRI container log rotation support
Fixes https://github.com/kubernetes/kubernetes/issues/58823.
This PR:
1) Added `pkg/kubelet/logs/container_log_manager.go` which manages and rotates container logs.
2) Added a feature gate `CRIContainerLogRotation` to enable the alpha feature. And 2 kubelet flags `--container-log-max-size` and `--container-log-max-files` to configure the rotation behavior.
3) Added unit test and node e2e test for container log rotation.
Note that:
1) Container log manager only starts when the container runtime is `remote` (not docker), because we can't implement `ReopenContainerLog` for docker.
2) Rotated logs are compressed with `gzip`.
2) The latest rotated log is not compressed. Because fluentd may still be reading the file right after rotation.
3) `kubectl logs` still doesn't support log rotation. This is not a regression anyway, it doesn't support log rotation for docker log today. We'll probably fix this in the future. (Issue: https://github.com/kubernetes/kubernetes/issues/59902)
An example of container log directory with `--container-log-max-files=3`:
```console
$ ls -al /var/log/pods/57146449-11ec-11e8-90e1-42010af00002
total 592
drwxr-xr-x 2 root root 4096 Feb 15 01:07 .
drwxr-xr-x 3 root root 12288 Feb 15 01:06 ..
-rw-r----- 1 root root 176870 Feb 15 01:07 log-container_0.log
-rw-r--r-- 1 root root 40239 Feb 15 01:07 log-container_0.log.20180215-010737.gz
-rw-r----- 1 root root 365996 Feb 15 01:07 log-container_0.log.20180215-010747
```
/assign @mtaufen for the config change.
/assign @dashpole @crassirostris for the log change.
/assign @feiskyer for CRI related change.
/cc @yujuhong @feiskyer @abhi @mikebrow @mrunalp @runcom
/cc @kubernetes/sig-node-pr-reviews @kubernetes/sig-instrumentation-pr-reviews
**Release note**:
```release-note
[Alpha] Kubelet now supports container log rotation for container runtime which implements CRI(container runtime interface).
The feature can be enabled with feature gate `CRIContainerLogRotation`.
The flags `--container-log-max-size` and `--container-log-max-files` can be used to configure the rotation behavior.
```
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Make CSI volume attributes first class
**What this PR does / why we need it**:
Move CSI volume attributes from PV annotation to CSI volume source first class field
**Release note**:
```release-note
NONE
```
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Migrate FeatureGates type of kube-proxy from string to map[string]bool
**What this PR does / why we need it**:
Migration of FeatureGates type. This is a follow-up of #53025.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref: #53025https://github.com/kubernetes/kubernetes/pull/57754#discussion_r160023416
**Special notes for your reviewer**:
/cc @luxas @mtaufen @ncdc
**Release note**:
```release-note
action required: kube-proxy: feature gates are now specified as a map when provided via a JSON or YAML KubeProxyConfiguration, rather than as a string of key-value pairs.
```
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Split KUBE-SERVICES chain to re-shrink the INPUT chain
**What this PR does / why we need it**:
#43972 added an iptables rule "`-A INPUT -j KUBE-SERVICES`" to make NodePort ICMP rejection work. (Previously the KUBE-SERVICES chain was only run from OUTPUT, not INPUT.) #44547 extended that patch for ExternalIP rejection as well.
However, the KUBE-SERVICES chain may potentially have a very large number of ICMP reject rules for plain ClusterIP services (the ones that get run from OUTPUT), and it seems that for some reason the kernel is much more sensitive to the length of the INPUT chain than it is to the length of the OUTPUT chain. So a node that worked fine with kube 1.6 (when KUBE-SERVICES was only run from OUTPUT) might fall over with kube 1.7 (with KUBE-SERVICES being run from both INPUT and OUTPUT).
(Specifically, a node with about 5000 ClusterIP reject rules that ran fine with OpenShift 3.6 [kube 1.6] slowed almost to a complete halt with OpenShift 3.7 [kube 1.7].)
This PR fixes things by splitting out the "new" part of KUBE-SERVICES (NodePort and ExternalIP reject rules) into a separate KUBE-EXTERNAL-SERVICES chain run from INPUT, and moves KUBE-SERVICES back to being only run from OUTPUT. (So, yes, this assumes that you don't have 5000 NodePort/ExternalIP services, but, if you do, there's not much we can do, since those rules *have* to be run on the INPUT side.)
Oh, and I left in the code to clean up the "`-A INPUT -j KUBE-SERVICES`" rule even though we don't generate it any more, so it gets fixed on upgrade.
**Release note**:
```release-note
Reorganized iptables rules to fix a performance regression on clusters with thousands of services.
```
@kubernetes/sig-network-bugs @kubernetes/rh-networking
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StorageOS configurable device directory and mount options
**What this PR does / why we need it**:
This allows StorageOS volumes to be mounted when the kubelet is running in a container and we are unable to use the default device location (/var/lib/storageos/volumes). With this PR, the node's device location is requested via the StorageOS api, falling back to the current behaviour if not configured. The node's device location can be supplied as an environment variable (DEVICE_DIR) to the StorageOS container. This is backwards-compatible and no changes are needed to existing deployments.
The PR also allows Mount options to be set for StorageOS volumes in the same way they're enabled for other volume plugins.
The StorageOS API dependency was updated to the latest version, but no functionality changes besides adding the DeviceDir property to the Controller object.
There is also a small refactor of the loopback device handling code in storageos_utils.go to capture stderr output.
**Release note**:
```release-note
StorageOS volume plugin updated to support mount options and environments where the kubelet runs in a container and the device location should be specified.
```
Not sure why godep changed the comments of unrelated packages in Godeps.json...
/sig storage
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Fix kubectl describe output for priority class objects.
**What this PR does / why we need it**:
Fixes `kubectl describe priorityclass` (try https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#example-priorityclass)
```
Name: high-priority
Value: %!s(int32=1000000)
GlobalDefault: %!s(bool=false)
Description: This priority class should be used for XYZ service pods only.
Annotations: <none>
Events: <none>
```
**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
```
@bsalamat @kubernetes/sig-scheduling-bugs @kubernetes/sig-cli-bugs
/king bug
/sig scheduling
/sig cli
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examples/podsecuritypolicy: add owners
When we modify something PSP-related, we need to update examples as well but unfortunately they wasn't belong to us.
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Introduce e2e test for Stackdriver Metadata Agent
**What this PR does / why we need it**:
Introduce e2e test for Stackdriver Metadata Agent
**Release note**:
```release-note
None
```
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Use consts as predicate key names in handlers
**What this PR does / why we need it**:
Per discussion in: https://github.com/kubernetes/kubernetes/pull/59335/files#r168351460
**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#59951
**Special notes for your reviewer**:
**Release note**:
```release-note
Use consts as predicate name in handlers
```
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apiextensions: add subresources for custom resources
Fixes#38113Fixes#58778
**Related**:
- Proposal: https://github.com/kubernetes/community/pull/913
- For custom resources to work with `kubectl scale`: https://github.com/kubernetes/kubernetes/pull/58283
**Add types**:
- Add `CustomResourceSubResources` type to CRD.
- Fix proto generation for `CustomResourceSubResourceStatus`: https://github.com/kubernetes/kubernetes/pull/55970.
- Add feature gate for `CustomResourceSubResources`.
- Update CRD strategy: if feature gate is disabled, this feature is dropped (i.e. set to `nil`).
- Add validation for `CustomResourceSubResources`:
- `SpecReplicasPath` should not be empty and should be a valid json path under `.spec`. If there is no value under the given path in the CustomResource, the `/scale` subresource will return an error on GET.
- `StatusReplicasPath` should not be empty and should be a valid json path under `.status`. If there is no value under the given path in the CustomResource, the status replica value in the /scale subresource will default to 0.
- If present, `LabelSelectorPath` should be a valid json path. If there is no value under `LabelSelectorPath` in the CustomResource, the status label selector value in the `/scale` subresource will default to the empty string.
- `ScaleGroupVersion` should be `autoscaling/v1`.
- If `CustomResourceSubResources` is enabled, only `properties` is allowed under the root schema for CRD validation.
**Add status and scale subresources**:
- Use helper functions from `apimachinery/pkg/apis/meta/v1/unstructured/helpers.go`.
- Improve error handling: https://github.com/kubernetes/kubernetes/pull/56563, https://github.com/kubernetes/kubernetes/pull/58215.
- Introduce Registry interface for storage.
- Update storage:
- Introduce `CustomResourceStorage` which acts as storage for the custom resource and its status and scale subresources. Note: storage for status and scale is only enabled when the feature gate is enabled _and_ the respective fields are enabled in the CRD.
- Introduce `StatusREST` and its `New()`, `Get()` and `Update()` methods.
- Introduce `ScaleREST` and its `New()`, `Get()` and `Update()` methods.
- Get and Update use the json paths from the CRD and use it to return an `autoscaling/v1.Scale` object.
- Update strategy:
- In `PrepareForCreate`,
- Clear `.status`.
- Set `.metadata.generation` = 1
- In `PrepareForUpdate`,
- Do not update `.status`.
- If both the old and new objects have `.status` and it is changed, set it back to its old value.
- If the old object has a `.status` but the new object doesn't, set it to the old value.
- If old object did not have a `.status` but the new object does, delete it.
- Increment generation if spec changes i.e. in the following cases:
- If both the old and new objects had `.spec` and it changed.
- If the old object did not have `.spec` but the new object does.
- If the old object had a `.spec` but the new object doesn't.
- In `Validate` and `ValidateUpdate`,
- ensure that values at `specReplicasPath` and `statusReplicasPath` are >=0 and < maxInt32.
- make sure there are no errors in getting the value at all the paths.
- Introduce `statusStrategy` with its methods.
- In `PrepareForUpdate`:
- Do not update `.spec`.
- If both the old and new objects have `.spec` and it is changed, set it back to its old value.
- If the old object has a `.spec` but the new object doesn't, set it to the old value.
- If old object did not have a `.spec` but the new object does, delete it.
- Do not update `.metadata`.
- In `ValidateStatusUpdate`:
- For CRD validation, validate only under `.status`.
- Validate value at `statusReplicasPath` as above. If `labelSelectorPath` is a path under `.status`, then validate it as well.
- Plug into the custom resource handler:
- Store all three storage - customResource, status and scale in `crdInfo`.
- Use the storage as per the subresource in the request.
- Use the validator as per the subresource (for status, only use the schema for `status`, if present).
- Serve the endpoint as per the subresource - see `serveResource`, `serveStatus` and `serveScale`.
- Update discovery by adding the `/status` and `/scale` resources, if enabled.
**Add tests**:
- Add unit tests in `etcd_test.go`.
- Add integration tests.
- In `subresources_test.go`, use the [polymporphic scale client](https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/client-go/scale) to get and update `Scale`.
- Add a test to check everything works fine with yaml in `yaml_test.go`.
**Release note**:
```release-note
`/status` and `/scale` subresources are added for custom resources.
```
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Cleanup node type checking for azure nodes
**What this PR does / why we need it**:
This PR cleanup node type checking for azure nodes. It also fixes a problem of `instance not found` error for VMAS nodes in vmss cluster (vmType set to vmss):
```
ss.GetPrimaryInterface(k8s-master), ss.getCachedVirtualMachine(k8s-master), err=instance not found
```
**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#60185
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Conversion from typed to unstructured should set GVK
**What this PR does / why we need it**:
By convention typed objects do not have `TypeMeta` information filled. When the scheme converts a typed object into Unstructured it should set type meta information explicitly otherwise Unstructured object is not recognizable.
**Special notes for your reviewer**:
Bug was not visible to tests because tests were working with a typed object with `TypeMeta` information filled. It was filled by previous tests. I have refactored tests for better isolation. Also fixed some other issues in tests.
Add `?w=1` to the PR's URL to see the diff with whitespace changes ignored.
**Release note**:
```release-note
NONE
```
/kind bug
/sig api-machinery
/cc @smarterclayton @deads2k
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Bump addon-manager to v8.6
**What this PR does / why we need it**:
Follow up of https://github.com/kubernetes/kubernetes/pull/59378, build & push a new addon-manager image to pick up the namespace change to support istio addon.
Pushed images for {amd64, arm, arm64, ppc64le, s390x}.
**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 #NONE
**Special notes for your reviewer**:
/assign @mikedanese @ostromart
**Release note**:
```release-note
NONE
```
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Fix passing gcloud command output to error check
Fix passing gcloud command output to error check. Underlying function from testing library expects interface{} and then type asserts that it's a string, so passing []byte results in errors:
```interface conversion: interface {} is []uint8, not string```
```release-note
NONE
```
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Allow env to be updated via specific key in resource
**What this PR does / why we need it**:
This change allows users of the `oc` client to specify a list of comma-separated keys when running `oc set env` which should be imported from a resource i.e configmap or secret
This can be useful when a number of applications want to share a configuration object but don't want to pollute a resource with unused environment
**Release note**:
```release-note
Allow kubectl env to specify which keys to import from a config map
```
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set default enabled admission plugins by official document
**What this PR does / why we need it**:
https://kubernetes.io/docs/admin/admission-controllers/#is-there-a-recommended-set-of-admission-controllers-to-use
recommend running the following set of admission controllers
```
If you previously had not set the `--admission-control` flag, your cluster behavior may change (to be more standard). See [https://kubernetes.io/docs/admin/admission-controllers/] for explanation of admission control.
```
**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
Set default enabled admission plugins `NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota`
```
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Fix instanceID for vmss nodes
**What this PR does / why we need it**:
When useInstanceMetadata is set to true for vmss nodes, their providerID is wrong.
Their providerID should be in format `azure:///subscriptions/<subscription-id>/resourceGroups/<rg-name>/providers/Microsoft.Compute/virtualMachineScaleSets/<scaleset-name>/virtualMachines/<instance-id>`.
**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#59855
**Special notes for your reviewer**:
**Release note**:
```release-note
Fix instanceID for vmss nodes.
```
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Fix grammar error of azure cloudprovider code
**What this PR does / why we need it**:
Fix grammar error to make it easy to understand
**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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refactor NsenterWriter to utilize pkg/util/nsenter
**What this PR does / why we need it**:
Per [discussion](https://github.com/kubernetes/kubernetes/pull/51771#discussion_r138824451)
Depend on #51771
**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
None
```
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readme update for fluentd-gcp-scaler
**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
```
/assign @crassirostris
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Add configuration item to allow kubeadm join to use a dns name pointing to control plane
This adds a new flag (`--apiserver-advertise-dns-address`) to kubeadm which is used in node kubelet.confg to point to API server allowing users to define a DNS entry instead of an IP address.
Fixeskubernetes/kubeadm#411
```release-note
Adds new flag `--apiserver-advertise-dns-address` which is used in node kubelet.confg to point to API server
```
// @timothysc @craigtracey
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Fix typos in configmaplock
**What this PR does / why we need it**:
Fixes some typos in `configmaplock.go`. Seems to be a combination of copy/paste errors from `endpointslock.go` and find/replace gone wrong.
**Release note**:
```release-note
NONE
```
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Bugfix/logf newline
**What this PR does / why we need it**:
Removes all redundant new lines being passed into the `Logf()` function. This involved going through code in both `test/e2e` and `test/e2e_node`, finding the newline redundancies in calls to `Logf()` and removing them.
**Which issue(s) this PR fixes**:
Fixes [#57102](https://github.com/kubernetes/kubernetes/issues/57102)
**Release note**:
```release-note
NONE
```
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add support for /token subresource in serviceaccount registry
I'm planning on implementing the registry bits (this) in one PR and followup with an authenticator that supports new id tokens.
https://github.com/kubernetes/kubernetes/issues/58790
@kubernetes/sig-auth-pr-reviews
```release-note
NONE
```
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Minor improvements to scheduling queue
**What this PR does / why we need it**:
Just minor improvements to the code of scheduling_queue.go. It shouldn't change the logic/behavior.
```release-note
NONE
```
/sig scheduling
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Adding per container stats for CRI runtimes
**What this PR does / why we need it**
This commit aims to collect per container log stats. The change was proposed as a part of #55905. The change includes change the log path from /var/pod/<pod uid>/containername_attempt.log to /var/pod/<pod uid>/containername/containername_attempt.log. The logs are collected by reusing volume package to collect metrics from the log path.
Fixes#55905
**Special notes for your reviewer:**
cc @Random-Liu
**Release note:**
```
Adding container log stats for CRI runtimes.
```
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add deployment proportional scaling e2e test
**What this PR does / why we need it**:
This PR adds deployment proportional scaling e2e test.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
xref #52113
**Release note**:
```release-note
NONE
```
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