Automatic merge from submit-queue (batch tested with PRs 60376, 55584, 60358, 54631, 60291). 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>.
cloud-controller-manager get /healthz to wait for apiserver to be healthy
**What this PR does / why we need it**:
currently cloud-controller-manager use `restclient.ServerAPIVersions()` to wait for apiserver to be healthy.
Remove ServerAPIVersions and make use of /healthz as all other components do.
**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#60288
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 60054, 60202, 60219, 58090, 60275). 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>.
Fixes for HTTP/2 max streams per connection setting
**What this PR does / why we need it**:
This PR makes two changes. One is to introduce a parameter
for the HTTP/2 setting that an api-server sends to its clients
telling them how many streams they may have concurrently open in
an HTTP/2 connection. If left at its default value of zero,
this means to use the default in golang's HTTP/2 code (which
is currently 250; see https://github.com/golang/net/blob/master/http2/server.go).
The other change is to make the recommended options for an aggregated
api-server set this limit to 1000. The limit of 250 is annoyingly low
for the use case of many controllers watching objects of Kinds served
by an aggregated api-server reached through the main api-server (in
its mode as a proxy for the aggregated api-server, in which it uses a
single HTTP/2 connection for all calls proxied to that aggregated
api-server).
**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#60042
**Special notes for your reviewer**:
**Release note**:
```release-note
Introduced `--http2-max-streams-per-connection` command line flag on api-servers and set default to 1000 for aggregated API servers.
```
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DaemonSet Controller and tests to apps/v1
**What this PR does / why we need it**:
Updates the DaemonSet controller, its integration tests, and its e2e tests to use the apps/v1 API.
**Release note**:
```release-note
The DaemonSet controller, its integration tests, and its e2e tests, have been updated to use the apps/v1 API.
```
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components pprof profiling make use of existing genericapiserver's
**What this PR does / why we need it**:
fix#60278
Instead of writing private pprof, all components make use of generic apiserver existing profiling.
**Release note**:
```release-note
NONE
```
This PR makes two changes. One is to introduce a parameter
for the HTTP/2 setting that an api-server sends to its clients
telling them how many streams they may have concurrently open in
an HTTP/2 connection. If left at its default value of zero,
this means to use the default in golang's HTTP/2 code (which
is currently 250).
The other change is to make the recommended options for an aggregated
api-server set this limit to 1000. The limit of 250 is annoyingly low
for the use case of many controllers watching objects of Kinds served
by an aggregated api-server reached through the main api-server (in
its mode as a proxy for the aggregated api-server, in which it uses a
single HTTP/2 connection for all calls proxied to that aggregated
api-server).
Fixes#60042
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Update bazelbuild/rules_go, kubernetes/repo-infra, and gazelle dependencies
**What this PR does / why we need it**: updates our bazelbuild/rules_go dependency in order to bump everything to go1.9.4. I'm separating this effort into two separate PRs, since updating rules_go requires a large cleanup, removing an attribute from most build rules.
**Release note**:
```release-note
NONE
```
With d7ddcca231, we lost the logging
of the flags. We should at least log what the command line flags
were used to start processes as those incredibly useful for trouble shooting.
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Remove CSI plugin from ProbeExpandableVolumePlugins
Add CSI plugin when feature gate is enabled
**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
```
/sig storage
/assign @vladimirvivien
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Remove controller-manager --service-sync-period flag
**What this PR does / why we need it**:
This PR removes controller manager --service-sync-period flag which is not used anywhere in the code and is causing confusion
**Which issue(s) this PR fixes**
https://github.com/kubernetes/kubernetes/issues/58776
**Special notes for your reviewer**:
@deads2k this remove the flag as per the discussion on #58776
2 commits
1. one for code change
2. one for auto generated code
**Release note**:
```release-note
1. Controller-manager --service-sync-period flag is removed (was never used in the code).
```
Add a separate method in a new file for creating cloud providers.
Currently the code is all mixed into the controller manager. We
should actively control what is made available to the cloud provider
so list explicitly the parms needed and move the code out. This will
avoid linkages to sneak in as we will catch it better during reviews.
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Do not recycle volumes that are used by pods
**What this PR does / why we need it**:
Recycler should wait until all pods that use a volume are finished.
Consider this scenario:
1. User creates a PVC that's bound to a NFS PV.
2. User creates a pod that uses the PVC
3. User deletes the PVC.
Now the PV gets `Released` (the PVC does not exists) and recycled, however the PV is still mounted to a running pod. PVC protection won't help us, because it puts finalizers on PVC that is under user's control and user can remove it.
This PR checks that there is no pod that uses a PV before it recycles it.
**Release note**:
```release-note
NONE
```
/sig storage
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Promote v1alpha1 meta to v1beta1
No code changes, just renames. We can discuss if there are any field / naming changes here or in a follow-up
Parent #58536Fixes#53224
Prereq to #55637
@kubernetes/sig-api-machinery-pr-reviews @deads2k
```release-note
The `meta.k8s.io/v1alpha1` objects for retrieving tabular responses from the server (`Table`) or fetching just the `ObjectMeta` for an object (as `PartialObjectMetadata`) are now beta as part of `meta.k8s.io/v1beta1`. Clients may request alternate representations of normal Kubernetes objects by passing an `Accept` header like `application/json;as=Table;g=meta.k8s.io;v=v1beta1` or `application/json;as=PartialObjectMetadata;g=meta.k8s.io;v1=v1beta1`. Older servers will ignore this representation or return an error if it is not available. Clients may request fallback to the normal object by adding a non-qualified mime-type to their `Accept` header like `application/json` - the server will then respond with either the alternate representation if it is supported or the fallback mime-type which is the normal object response.
```
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add PV size grow feature for azure file
**What this PR does / why we need it**:
According to kubernetes/features#284, add size grow feature for azure 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#56462
**Special notes for your reviewer**:
Since azure file is using SMB 3.0 protocal, there is no necessary to resize filesystem on agent side, the agent node will detect the changed size automatically.
**Release note**:
```
add size grow feature for azure file
```
/sig azure
@gnufied @rootfs @brendandburns
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Promote Statefulset controller and its e2e tests to use apps/v1
**What this PR does / why we need it**:
Promotes the statefulset controller to use to use the latest apps group [apps/v1](https://github.com/kubernetes/kubernetes/pull/53679)
**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 # https://github.com/kubernetes/kubernetes/issues/55714
**Special notes for your reviewer**:
* Listerexpansion for v1 `k8s.io/client-go/listers/apps/v1` (was recently done for v1beta2)
* `v1beta2` && `v1` had `ObservedGeneration` as `int64` where as `v1beta1` and rest of the code (including conversion) is expecting `ObservedGeneration` to be `*int64`
```
type StatefulSetStatus struct {
// observedGeneration is the most recent generation observed for this StatefulSet. It corresponds to the
// StatefulSet's generation, which is updated on mutation by the API Server.
// +optional
ObservedGeneration int64 `json:"observedGeneration,omitempty" protobuf:"varint,1,opt,name=observedGeneration"`
```
* for kubectl's `rollback` and `history` commands a couple functions have been duplicated to allow us to use `v1` version instead of `v1beta1` for statefulsets, while the older functions are still used by other controllers.
We should be able to remove these duplicates once all the controllers are moved.
If this aligns with the plan then i could move other controllers too.
cc: @kow3ns
**Release note**:
```release-note
NONE
```
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serviceaccount: check token is issued by correct iss before verifying
Right now if a JWT for an unknown issuer, for any subject hits the
serviceaccount token authenticator, we return a errors as if the token
was meant for us but we couldn't find a key to verify it. We should
instead return nil, false, nil.
This change helps us support multiple service account token
authenticators with different issuers.
https://github.com/kubernetes/kubernetes/issues/58790
```release-note
NONE
```
Right now if a JWT for an unknown issuer, for any subject hits the
serviceaccount token authenticator, we return a errors as if the token
was meant for us but we couldn't find a key to verify it. We should
instead return nil, false, nil.
This change helps us support multiple service account token
authenticators with different issuers.
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low hanging fruit for using cobra commands
This makes the simple updates to use cobra commands instead of individual ones
/assign liggitt
/assign ncdc
/assign sttts
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use shared informers for BootstrapSigner controller
**What this PR does / why we need it**:
fix TODO: Switch to shared informers
**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
```
Prepatory work fpr removing cloud provider dependency from node
controller running in Kube Controller Manager. Splitting the node
controller into its two major pieces life-cycle and CIDR/IP
management. Both pieces currently need the the cloud system to do their work.
Removing lifecycles dependency on cloud will be fixed ina followup PR.
Moved node scheduler code to live with node lifecycle controller.
Got the IPAM/Lifecycle split completed. Still need to rename pieces.
Made changes to the utils and tests so they would be in the appropriate
package.
Moved the node based ipam code to nodeipam.
Made the relevant tests pass.
Moved common node controller util code to nodeutil.
Removed unneeded pod informer sync from node ipam controller.
Fixed linter issues.
Factored in feedback from @gmarek.
Factored in feedback from @mtaufen.
Undoing unneeded change.
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Use authentication client with explicit version
**What this PR does / why we need it**:
Authentication client without explicit version has been deprecated, change them to the one with explicit version.
**Which issue(s) this PR fixes**:
Fixes partially #55993
**Special notes for your reviewer**:
/cc @caesarxuchao @sttts
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue. 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>.
Fix garbage collector when leader-elect=false
**What this PR does / why we need it**:
In a 1.8.x master with --leader-elect=false, the garbage collector controller
does not work.
When deleting a deployment with v1meta.DeletePropagationForeground, the deployment
had its deletionTimestamp set and a foreground Deletion finalizer was added,
but the deployment, rs and pod were not deleted.
This is an issue with how the garbage collector graph_builder behaves when the
stopCh=nil. This PR creates a dummy stop channel for the garbage collector controller (and other
controllers started by the controller-manager) so that they can work more like they do when
when the controller-manager is configured with --leader-elect=true.
**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#57044
**Special notes for your reviewer**:
**Release note**:
```release-note
Fix garbage collection when the controller-manager uses --leader-elect=false
```
Seperate loop and plugin control in the kube-controller-manager.
Adding an "--external-plugin" flag to specify a plugin to load when
cloud-provider is set to "external". Flag has no effect currently
when the cloud-provider is not set to external. The expectation is
that the cloud provider and external plugin flags would go away once
all cloud providers are on stage 2 cloud-controller-manager solutions.
Managing the control loops more directly based on start up flags.
Addressing issue brought up by @wlan0
Switched to using the main node controller in CCM.
Changes to enable full NodeController to start in CCM.
Fix related tests.
Unifying some common code between KCM and CCM.
Fix related tests and comments.
Folded in feedback from @jhorwit2 and @wlan0
**What this PR does / why we need it**:
In a 1.8.x master with --leader-elect=false, the garbage collector controller
does not work.
When deleting a deployment with v1meta.DeletePropagationForeground, the deployment
had its deletionTimestamp set and a foreground Deletion finalizer was added,
but the deployment, rs and pod were not deleted.
This is an issue with how the garbage collector graph_builder behaves when the
stopCh=nil. This PR creates a dummy stop channel for the garbage collector controller (and other
controllers started by the controller-manager) so that they can work more like they do when
when the controller-manager is configured with --leader-elect=true.
**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#57044
**Special notes for your reviewer**:
**Release note**:
<!-- Write your release note:
1. Enter your extended release note in the below block. If the PR requires additional action from users switching to the new release, include the string "action required".
2. If no release note is required, just write "NONE".
-->
```release-note
Garbage collection doesn't work when the controller-manager uses --leader-elect=false
```
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Fix failure to load volume plugins for #52048
Currently we have two plugin managers.
However one of them limits the cloud plugins it loads.
This means that if cloud provider is set to external the plugins will
not be loaded in *that* plugin manager. However they will be loaded in
the other instance of the plugin manager. So it does not actually save
us anything. It does hamper the efforts to actually get stage 1
separation working.
**What this PR does / why we need it**: It allows the plugins be found for the cloud providers working on stage 1 separation.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#52048
**Special notes for your reviewer**:
**Release note**:
```release-note NONE
```
running (renamed to GetAllCurrentZones). Added E2E test to confirm this
behavior.
Added node informer to cloud-provider controller to keep track of zones
with k8s nodes in them.
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use versiond group clients from client-go
**What this PR does / why we need it**:
Some **Deprecated** group clients are still used, replace them with versioned group clients.
**Which issue this PR fixes**: fixes#49760
**Special notes for your reviewer**:
/assign @caesarxuchao
**Release note**:
```release-note
NONE
```
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Tolerate partial discovery in garbage collector
Allow the garbage collector to tolerate partial discovery failures. On a
partial failure, use whatever was discovered, log the failures, and
allow the resync logic to try again later.
Fixes#55022.
```release-note
API discovery failures no longer crash the kube controller manager via the garbage collector.
```
/cc @caesarxuchao
Allow the garbage collector to tolerate partial discovery failures. On a
partial failure, use whatever was discovered, log the failures, and
allow the resync logic to try again later.
Fixes#55022.
Automatic merge from submit-queue (batch tested with PRs 53592, 52562, 55175, 55213). 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>.
Check RegisterMetricAndTrackRateLimiterUsage error when starting BootstrapSigner & TokenCleaner controllers
**What this PR does / why we need it**:
Prevent `BootstrapSigner` and `TokenCleaner` controllers to start if `metrics.RegisterMetricAndTrackRateLimiterUsage` returns an error.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: complements #53571
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
ClusterCIDR and ServiceCIDR are settings that are only used if at least
AllocateNodeCIDRs is set. The route controller requires in addition to
it for ConfigureCloudRoutes to be true as well. Since
AllocateNodeCIDRs is by default false, if guard the parsing of these
settings in order to not unnecessarily spam logs. Amend the
documentation of kube-controller-manager for the 2 settings to point
out the requirement of AllocateNodeCIDRs to be true as well
1) Modify rbdPlugin to implement volume.AttachableVolumePlugin
interface.
2) Add rbdAttacher/rbdDetacher structs to implement
volume.Attacher/Detacher interfaces.
3) Add mount.SafeFormatAndMount/mount.Exec fields to rbdPlugin, and
setup them in rbdPlugin.Init for later uses.
Attacher/Mounter/Unmounter/Detacher reference rbdPlugin to use mounter
and exec. This simplifies code.
4) Add testcase struct to abstract RBD Plugin test case, etc.
5) Add newRBD constructor to unify rbd struct initialization.
This updates the HPA controller to use the polymorphic scale client from
client-go. This should enable HPAs to work with arbitrary scalable
resources, instead of just those in the extensions API group (meaning we
can deprecate the copy of ReplicationController in extensions/v1beta1).
It also means that the HPA controller now pays attention to the
APIVersion field in `scaleTargetRef` (more specifically, the group part
of it).
Note that currently, discovery information on which resources are
available where is only fetched once (the first time that it's
requested). In the future, we may want a refreshing discovery REST
mapper.
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Make HPA tolerance a flag
**What this PR does / why we need it**:
Make HPA tolerance configurable as a flag. This change allows us to use
different tolerance values in production/testing.
**Which issue this PR fixes**:
Fixes#18155
**Release note:**
```release-note
Control HPA tolerance through the `horizontal-pod-autoscaler-tolerance` flag.
```
Signed-off-by: mattjmcnaughton <mattjmcnaughton@gmail.com>
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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fix conditional for warning while starting KCM without secret file
@liggitt @spiffxp @lavalamp
Fixes#53291
A small bug was introduced in this PR - https://github.com/kubernetes/kubernetes/pull/50288, where the warning message is printed when the file is specified, and it is not printed if it is left blank - exactly the opposite of the intended behavior.
This fixes that.
```
release-note-none
```
Fix#18155
Make HPA tolerance configurable as a flag. This change allows us to use
different tolerance values in production/testing.
Signed-off-by: mattjmcnaughton <mattjmcnaughton@gmail.com>
Automatic merge from submit-queue (batch tested with PRs 52751, 52898, 52633, 52611, 52609). 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>..
Add default value for RouteReconciliationPeriod in cloud controller manager
**What this PR does / why we need it**:
Add default sync period value config for RouteReconciliationPeriod. For now the default value is 0, which means zero cooldown time.
The value is taken from kube-controller-manager:
b2b079b95a/cmd/kube-controller-manager/app/options/options.go (L73)
**Which issue this PR fixes**
**Special notes for your reviewer**:
**Release note**:
Automatic merge from submit-queue (batch tested with PRs 52445, 52380, 52516, 52531, 52538). 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>..
remove repeated import'k8s.io/client-go/kubernetes' in controllermana…
**What this PR does / why we need it**:
There are duplicate importing "k8s.io/client-go/kubernetes", we just need 'clientset'.
**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
```
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adding kube-controller-manager starting option tests
**What this PR does / why we need it**:
The unit test for kube-controller-manager is missing in `cmd/kube-controller-manager/app/options`. I have added a unit test for checking kube-controller-manager starting options, which is similar to the unit test in `cmd/kube-apiserver/app/options/options_test.go`. This PR https://github.com/kubernetes/kubernetes/pull/49092 can be seen as a reference.
**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**:
`NONE`
hzxuzhonghu