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Make feature gates loadable from a map[string]bool
Command line flag API remains the same. This allows ComponentConfig
structures (e.g. KubeletConfiguration) to express the map structure
behind feature gates in a natural way when written as JSON or YAML.
For example:
KubeletConfiguration Before:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates: "DynamicKubeletConfig=true,Accelerators=true"
```
KubeletConfiguration After:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates:
DynamicKubeletConfig: true
Accelerators: true
```
Fixes: #53024
```release-note
The Kubelet's feature gates are now specified as a map when provided via a JSON or YAML KubeletConfiguration, rather than as a string of key-value pairs.
```
/cc @mikedanese @jlowdermilk @smarterclayton
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Fix hpa scaling above max replicas w/ scaleUpLimit
**What this PR does / why we need it**:
Fix a bug where `desiredReplicas` could be greater than `maxReplicas`
if the original value for `desiredReplicas > scaleUpLimit` and
`scaleUpLimit > maxReplicas`. Previously, when that happened, we would
scale up to `scaleUpLimit`, and then in the next auto-scaling run, scale
down to `maxReplicas`. Address this issue and introduce a regression
test.
**Which issue this PR fixes**
fixes#53670
**Release note**:
```release-note
Address a bug which allowed the horizontal pod autoscaler to allocate `desiredReplicas` > `maxReplicas` in certain instances.
```
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Fix format specifiers in Azure cloud provider
**What this PR does / why we need it**: Fixes invalid/mismatched format specifiers in Azure cloud provider logging statements (`glog...Infof(...)`) that would cause information to be lost in logging output, as flagged by `go vet`.
**Which issue this PR fixes**: None
**Special notes for your reviewer**: None
**Release note**:
```release-note
NONE
```
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cleaning node controller from code for unsupported versions
**What this PR does / why we need it**:
**Which issue this PR fixes**: fixes#52356
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
Fix#53670
Fix a bug where `desiredReplicas` could be greater than `maxReplicas`
if the original value for `desiredReplicas > scaleUpLimit` and
`scaleUpLimit > maxReplicas`. Previously, when that happened, we would
scale up to `scaleUpLimit`, and then in the next auto-scaling run, scale
down to `maxReplicas`. Address this issue and introduce a regression
test.
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Remove duplicate code fixing empty name error
**What this PR does / why we need it**:
Removes two helper functions which have duplicate code; code can be safely added to the calling function. This does add an extra parameter to calls. Since the helpers are file local functions with only two call sites it is trivial to see that this PR maintains current logic.
**Special notes for your reviewer**:
The diff is a bit convoluted since this PR [re]moves lines in consecutive functions.
**Release note**:
```release-note
NONE
```
/sig cli
/kind cleanup
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Fix kube-proxy to use proper iptables commands for IPv6 operation
For iptables save and restore operations, kube-proxy currently uses
the IPv4 versions of the iptables save and restore utilities
(iptables-save and iptables-restore, respectively). For IPv6 operation,
the IPv6 versions of these utilities need to be used
(ip6tables-save and ip6tables-restore, respectively).
Both this change and PR #48551 are needed to get Kubernetes services
to work in an IPv6-only Kubernetes cluster (along with setting
'--bind-address ::0' on the kube-proxy command line. This change
was alluded to in a discussion on services for issue #1443.
fixes#50474
**What this PR does / why we need it**:
This change modifies kube-proxy so that it uses the proper commands for iptables save and
iptables restore for IPv6 operation. Currently kube-proxy uses 'iptables-save' and 'iptables-restore'
regardless of whether it is being used in IPv4 or IPv6 mode. This change fixes kube-proxy so
that it uses 'ip6tables-save' and 'ip6tables-restore' commands when kube-proxy is being run
in IPv6 mode.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50474
**Special notes for your reviewer**:
**Release note**:
```release-note NONE
```
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Removed the IPv6 prefix size limit for cluster-cidr
Fixes#50395
/sig network
/area ipv6
cc @rpothier
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Move endpoints IPPart function to util
**What this PR does / why we need it**:
Clean up proxier.go
Move endpoints IPPart function to util so that it can be consumed by different proxiers.
BTW, the newer `IPPart()` supports IPV6, we need to update it in `ipvs/proxier.go`
**Which issue this PR fixes**:
closes#53632
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/sig network
/area kube-proxy
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fix minor typo
**What this PR does / why we need it**:
Typo error
**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
```
Using assertions for unit tests:
1. cmd/kube-controller-manager/app/controller_manager_test.go
2. pkg/controller/bootstrap/jws_test.go
3. pkg/controller/cloud/node_controller_test.go
4. pkg/controller/controller_utils_test.go
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kubectl: Remove swagger 1.2 entirely.
**What this PR does / why we need it**:
Remove dead code since nothing is using swagger 1.2 anymore. This doesn't change any feature, it's just removing unused code.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: Follow up on #44589
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Make sure we use rwlocks not just RLock
We need to use of rwlock for updating the desired state of world. I think `-race` flag doesn't detects this consistently.
Fixes#53590
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Enable API chunking and promote to beta for 1.9
All list watchers default to using chunking. The server by default fills pages to avoid low cardinality filters from making excessive numbers of requests. Fix an issue with continuation tokens where a `../` could be used if the feature was enabled.
```release-note
API chunking via the `limit` and `continue` request parameters is promoted to beta in this release. Client libraries using the Informer or ListWatch types will automatically opt in to chunking.
```
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remove replicaset unit tests that are converted to integration tests
**What this PR does / why we need it**:
This PR revamps existing replicaset unit tests by removing the tests that have been converted to integration tests.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: xref #52118
**Release note**:
```release-note
NONE
```
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Cpu Manager - make CoreID's platform unique
**What this PR does / why we need it**:
Cpu Manager uses topology from cAdvisor(`/proc/cpuinfo`) where coreID's are socket unique - not platform unique - this causes problems on multi-socket platforms.
All code assumes unique coreID's (on platform) - `Discovery` function has been changed to assign CoreID as the lowest cpuID from all cpus belonging to the same core. This can be expressed as:
`CoreID=min(cpuID's on the same core)`
Since cpuID's are platform unique - above gives us guarantee that CoreID's will also be platform unique.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53323
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format some code in dockershim
**What this PR does / why we need it**:
format some code in dockershim
**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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Fix potential problem when scaling --replicas=0
**What this PR does / why we need it**:
We have defensive code for checking if newRS != nil for
DeploymentProgressing and DeploymentTimedOut but not for
DeploymentComplete. Let's add the check here as well as
this problem was seen in the wild.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
Fixes#53613
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Move initializer plugin to the generic apiserver
* Moves `k8s.io/kuberentes/plugin/pkg/admission/initialization` to `k8s.io/apiserver/pkg/admission/plugin/initialization`
* Moves `k8s.io/kubernetes/pkg/kubeapiserver/admission/configuration` to `k8s.io/apiserver/pkg/admission/configuration`
* The initializer plugin used to depend on `k8s.io/kubernetes` because it does a type assertion of `api.Pod`. It tries to skip mirror pod. I converted that code to use the generic accessor pattern.
Command line flag API remains the same. This allows ComponentConfig
structures (e.g. KubeletConfiguration) to express the map structure
behind feature gates in a natural way when written as JSON or YAML.
For example:
KubeletConfiguration Before:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates: "DynamicKubeletConfig=true,Accelerators=true"
```
KubeletConfiguration After:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates:
DynamicKubeletConfig: true
Accelerators: true
```
Automatic merge from submit-queue (batch tested with PRs 53525, 53652). 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>.
apimachinery: remove ObjectCopier interface(s)
The big commit is a mechanical, transitive removal of the copier interfaces in all structs and function calls.
Previously
`pkg.controller.podautoscaler.UnsafeConvertToVersion` was
exported. However, it was never used outside of the `podautoscaler`
package. Make it private to prevent confusion.
Additionally, move the two private functions in `horizontal.go` to be
with the other private functions at the bottom of the file - imho its
more readable than having them directly at the top of the file, before
the public type and function definitions.
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cleaning tests from deprecated usecases due to unsupported version
**What this PR does / why we need it**: this part of the #52356 effort
**Which issue this PR fixes**:
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 53444, 52067, 53571, 53182). 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>.
Retry when checking Azure storage account readiness
**What this PR does / why we need it**: When the Azure cloud provider ensures that a default storage container exists, if the storage account exists but is still provisioning, it exits without retrying. This is a bug as the code is wrapped in a backoff policy but never signals the policy to retry. This PR fixes this behaviour by returning values which allow the backoff policy to operate.
**Which issue this PR fixes**: fixes#53052
**Special notes for your reviewer**: Not sure how to test this - I have done a deployment using acs-engine and it seems to work but I am not sure of the best way to exercise the failure path.
**Release note**:
```release-note
NONE
```
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Return an error if metric cannot be registered
**What this PR does / why we need it**:
`prometheus.MustRegister` panics if a metric cannot be registered. This PR replaces it with `prometheus.Register`, as it does not panic, and returns the error if the metric cannot be registered.
I also adds lacking tests for `RegisterMetricAndTrackRateLimiterUsage`.
**Which issue this PR fixes**:
Fixes#52872
**Special notes for your reviewer**:
None of the `metrics.RegisterMetricAndTrackRateLimiterUsage` invocations check the returned error, so I plan to submit new PRs to address this.
**Release note**:
```release-note
NONE
```
/sig instrumentation
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Don't skip mounts if we can't find the volume
**What this PR does / why we need it**:
Return an error instead of skipping the volume while constructing the list of volume mounts for the container runtime. This prevents the scenario of a container writing data to an ephemeral volume when it expects the volume to be persistent.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53421
**Release note**:
NONE
@kubernetes/sig-storage-pr-reviews
We have defensive code for checking if newRS != nil for
DeploymentProgressing and DeploymentTimedOut but not for
DeploymentComplete. Let's add the check here as well as
this problem was seen in the wild.
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Return err when delete volume failed
Return err when delete volume failed
**Release note**:
```release-note
NONE
```
/kind bug
/sig openstack
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In DevicePluginHandlerImpl.Allocate(), skips untracked extended resou…
…rces.
Otherwise, we would fail a Pod allocation request that has an extended
resource not managed by any device plugin.
**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 #
https://github.com/kubernetes/kubernetes/issues/53548
**Special notes for your reviewer**:
**Release note**:
```release-note
Ignore extended resources that are not registered with kubelet
```
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Use const instead of hard code for volume plugin
**What this PR does / why we need it**:
nits: cleanup hard-coded volume plugin name
**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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[OpenStack]Add codes to check the count of nodes(members)
After merging this PR(#53146), if there is no available nodes for
the loadbalancer service, UpdateLoadBalancer() will run panic.
**Release note**:
```release-note
NONE
```
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
```
`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
```
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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
```
