move k8s.io/kubernetes/plugin/pkg/admission/initialization to
k8s.io/apiserver/pkg/admission/plugin/initialization/initialization.go;
move k8s.io/kubernetes/pkg/kubeapiserver/admission/configuration to
k8s.io/apiserver/pkg/admission/configuration.
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add possibility to ignore volume label in dynamic provisioning
**What this PR does / why we need it**: this is needed if openstack cinder zone name does not match to compute zone names. For instance if there is only one cinder zone and many compute zones.
**Which issue this PR fixes**: fixes#53488
**Special notes for your reviewer**:
```release-note
NONE
```
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Improve `horizontal.go` documentation
**What this PR does / why we need it**:
Resolve the remaining `golint` errors in the
`pkg/controller/podautoscaler` package by improving the documentation
in `horizontal.go`. Now all public methods have comments.
**Special notes for your reviewer**:
Re discussions in [this pr](https://github.com/kubernetes/kubernetes/pull/52238).
**Release note**:
```release-note
NONE
```
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Add launching Cluster Autoscaler in Kubemark
**What this PR does / why we need it**:
Allows to launch Cluster Autoscaler in Kubemark.
To do it, set ENABLE_KUBEMARK_CLUSTER_AUTOSCALER flag to true. This currently only works with one nodegroup, for which you can specify minimum and maximum number of nodes and name. (KUBEMARK_AUTOSCALER_MIN_NODES, KUBEMARK_AUTOSCALER_MAX_NODES, KUBEMARK_AUTOSCALER_MIG_NAME).
Is is important to note that NUM_NODES has a different meaning when launching Cluster Autoscaler - we always start with only one node, but NUM_NODES is used to calculate the size of Kubemark master and addon components.
There are no changes to the current setup if ENABLE_KUBEMARK_CLUSTER_AUTOSCALER is set to false.
**Release note**:
```
NONE
```
This is part of the move to external cloud providers. Please see
plan detail in issue 50986. This PR covers step #2:
v1.9 - set no cloud provider as the default in kubelet but still allow
opt in for auto-detect
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Fix the defaultServerImage name of hyperkube in kubefed
**What this PR does / why we need it**:
Fixes the issue mentioned in https://github.com/kubernetes/kubernetes/issues/53430
Docker images cannot contain special characters like '+' in the tags. So while uploading the federation container images we replace '+' character by '_'. This should have been taken care by kubefed too while consuming the federation container image.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53430
**Special notes for your reviewer**:
This PR fixes the "invalid reference format" issue for the docker image. But am not sure if the version of hyperkube image is available in registry. The version is got from `version.Get()`. So if a user has built the kubefed from source it may be possible that the hyperkube version referenced by that commit is not available in registry. Ideally this issue should not arise on released versions of kubefed.
We need to cherry-pick this fix to all previous supported k8s versions too.
**Release note**:
```release-note
NONE
```
/cc @kubernetes/sig-multicluster-bugs
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Avoid unnecessary gcloud call if test was skipped
This adds a safeguard to AfterEach to avoid attempting to resize node group with empty name when the test was skipped.
```
1009 04:06:31.866] [BeforeEach] [sig-autoscaling] Autoscaling a service
I1009 04:06:31.866] /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/autoscaling/autoscaling_timer.go:42
I1009 04:06:31.869] [BeforeEach] from 1 pod and 3 nodes to 8 pods and >=4 nodes
I1009 04:06:31.869] /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/autoscaling/autoscaling_timer.go:68
I1009 04:06:31.869] Oct 9 04:06:31.869: INFO: test expects 1 node group, found 2
I1009 04:06:31.870] [AfterEach] from 1 pod and 3 nodes to 8 pods and >=4 nodes
I1009 04:06:31.870] /go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/autoscaling/autoscaling_timer.go:74
I1009 04:06:31.870] Oct 9 04:06:31.869: INFO: Skipping dumping logs from cluster
I1009 04:06:32.510] Oct 9 04:06:32.509: INFO: Failed to resize node instance group: ERROR: (gcloud.compute.instance-groups.managed.resize) could not parse resource []
I1009 04:06:32.510]
I1009 04:06:32.510] Oct 9 04:06:32.509: INFO: Skipping dumping logs from cluster
I1009 04:06:32.510] Oct 9 04:06:32.509: INFO: Unexpected error occurred: exit status 1
```
`prometheus.MustRegister` panics if the metric cannot be registered.
Instead, use `prometheus.Register` and return the error if the metric
cannot be registered.
Also, add tests for `RegisterMetricAndTrackRateLimiterUsage`.
Signed-off-by: Ferran Rodenas <frodenas@gmail.com>
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validate kube-proxy options
Signed-off-by: allencloud <allen.sun@daocloud.io>
**What this PR does / why we need it**:
I found that some components does not validate the config at the startup of itself. Without this, startup will bring some bad things. And I think fail fast can save customer's time and make thing simple and clear.
This PR add validation of kube-proxy's configuration.
**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/kubernetes/issues/53578
**Special notes for your reviewer**:
Actually I only add a file named validation.go in `pkg/apis/componentconfig/validation/`, while I see in every folder, there is a file named `BUILD`, I hope to know how to add this file.
**Release note**:
```release-note
NONE
```
This change will mount `/lib/modules` on host to the kube-proxy pod,
so that a kube-proxy pod can load kernel modules by need
or when `modprobe <kmod>` is run inside the pod.
This will be convenient for kube-proxy running in IPVS mode.
Users will don't have to run `modprobe ip_vs` on nodes before starting
a kube-proxy pod.
Automatic merge from submit-queue (batch tested with PRs 50447, 53308). 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>.
[e2e] add service session affinity test case
**What this PR does / why we need it**:
**Which issue this PR fixes**:
Add service session affinity test case for e2e
fixes#31712
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 51771, 52971). 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>.
pass labelSelector to server side opaquely
**What this PR does / why we need it**:
From @smarterclayton
> The server is responsible for handling label selection for the most part. There is some level of client side processing possible, but for the most part `label selector` should be able to be passed opaquely.
xref #50140
**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**:
/assign @smarterclayton @liggitt
**Release note**:
```release-note
None
```
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Refactor nsenter
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#51273
**Special notes for your reviewer**:
/assign @jsafrane
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 53565, 53560). 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>.
sort top pod and top node output by namespace/name
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53513
**Special notes for your reviewer**:
/assign @smarterclayton
**Release note**:
```release-note
kubectl top pod and node should sort by namespace / name so that results don't jump around.
```
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Fix a grammatical problem in a comment
**What this PR does / why we need it**:
**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
```
This change modifies the way that config.NodeIP is selected at the
start of e2e Networking tests such that if no external addresses are
available from the cloud provider (e.g. either no cloud provider being
used [baremetal or VMs], or the provider doesn't have external IPs
configured), then one of the internal addresses is used.
Without this change, the e2e service-related Networking tests would always
panic when config.ExternalAddrs[0] is accessed and the slice is empty.
This change eliminates the panic, and in some setups, the fallback choice
of using an internal address will provide the necessary connectivity
for the e2e Networking tests to access each node.
fixes#53568
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Build hyperkube image using Bazel
**What this PR does / why we need it**: Before we had the hyperkube base image, it was difficult to build the hyperkube with Bazel. Now that we have the base image with all the necessary dependencies, this has become trivial.
This will enable federation jobs etc on prow.
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/assign @BenTheElder @mikedanese @spxtr
cc @luxas @pipejakob
