Automatic merge from submit-queue (batch tested with PRs 49855, 49915)
Let controllers ignore initialization timeout when creating pods
Partially address https://github.com/kubernetes/kubernetes/issues/48893#issuecomment-318540129.
This only updates the controllers that create pods with `GenerateName`.
The controllers ignore the timeout error when creating the pods, depending on how the initialization progress:
* If the initialization is successful in less than 5 mins, the controller will observe the creation via the informer. All is good.
* If the initialization fails, server will delete the pod, but the controller won't receive any event. The controller will not create new pod until the Creation expectation expires in 5 min.
* If the initialization takes too long (> 5 mins), the Creation expectation expires and the controller will create extra pods.
I'll send follow-up PRs to fix the latter two cases, e.g., by refactoring the sharedInformer.
Automatic merge from submit-queue
Timeout and Max-in-flight don't report non-resource URLs correctly.
Unify error reporting for 429 and 504 to be correct for timeout and max in flight and eviction. Add better messages to eviction (removing a todo). Return the correct body content for timeouts (reason and code should be correct).
This potentially increases cardinality of 429, but because non-api urls may be under the max-inflight budget we need to report them somewhere (if something breaks and starts fetching API versions endlessly).
```release-note
The 504 timeout error was returning a JSON error body that indicated it was a 500. The body contents now correctly report a 500 error.
```
Automatic merge from submit-queue
go-client: Use httpcache client for all requests, even though only openapi returns ETags for caching
**What this PR does / why we need it**: Use HTTP ETag for caching Swagger spec download
This also adds a new command-line flag "cachedir" to specify where the cache should keep its file. It defaults to `$HOME/.kube/http-cache`.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: partly #38637
**Special notes for your reviewer**:
Because this adds a bunch of dependencies, and removes a couple of files, I do recommend reading each commit individually.
**Release note**:
```release-note
```
Add a new command-line cachedir flag to specify where to store the http
cache responses. This cache will only be used for OpenAPI Swagger spec
for now (as this is the only end-point that returns an ETag).
Automatic merge from submit-queue (batch tested with PRs 50119, 48366, 47181, 41611, 49547)
Move remaining cert helper functions from pkg/serviceaccount to client-go/util/cert
**What this PR does / why we need it**:
Unifies all remaining certificate helper functions from pkh/serviceaccount to client-go/util/cert. Private key functions were moved in #40907
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#40807
**Special notes for your reviewer**:
**Release note**:
Automatic merge from submit-queue
kube-gen: cut off dependencies
Only gengo is left and apimachinery/pkg/openapi. The later will go away when #48861 merges.
This is the preparation that we can use kube-gen also from apimachinery without circular dependencies.
Automatic merge from submit-queue (batch tested with PRs 46685, 49863, 50098, 50070, 50096)
Remove 0,1,3 from rand.String to avoid 'bad words'
**What this PR does / why we need it**:
Remove 0,1,3 from the runes to prevent accidental bad words profanity
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#49543
**Special notes for your reviewer**:
/cc @mml @jamesawebb1 @spiffxp
**Release note**:
```release-note
Remove 0,1,3 from rand.String, to avoid 'bad words'
```
Automatic merge from submit-queue (batch tested with PRs 46685, 49863, 50098, 50070, 50096)
apiextensions: fix data race in storage
Fixes data race in CRD storage.
Copy to a new map because we cannot write to storageMap without a race as it is used without locking elsewhere.
**Release note**:
```release-note
NONE
```
/cc @sttts
Automatic merge from submit-queue (batch tested with PRs 48237, 50084, 50019, 50069, 50090)
create default storage selection functions
The vast majority of our REST storage needs either default selection predicates or minor tweaks the the field selection criteria. This pull makes that work without any special fields set, but also allows the more complex configuration where it is required. I only changed one storage an example. Once this merges, I'll update the others.
@kubernetes/sig-api-machinery-misc @wojtek-t @smarterclayton @sttts @cheftako ptal.
Automatic merge from submit-queue (batch tested with PRs 50103, 49677, 49449, 43586, 48969)
Run kazel on the entire tree
**What this PR does / why we need it**: part of #47558: auto-generate `BUILD` files on the entire tree, since this is what `gazelle` does, and it'll make subsequent reviews easier if less is changing.
**Release note**:
```release-note
NONE
```
/assign
/release-note-none
Automatic merge from submit-queue (batch tested with PRs 50103, 49677, 49449, 43586, 48969)
Add missing UID in SubjectAccessReviewSpec
**What this PR does / why we need it**:
WebhookAuthorizer's Authorize should send *all* the information
present in the user.Info data structure. We are not sending the
UID currently.
**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
The SubjectAccessReview API in the authorization.k8s.io API group now allows providing the user uid.
```
- Move public key functions to client-go/util/cert
- Move pki file helper functions to client-go/util/cert
- Standardize on certutil package alias
- Update dependencies to client-go/util/cert
Automatic merge from submit-queue
apiextensions: fix panic with KUBE_API_VERSIONS set
https://github.com/kubernetes/kubernetes/pull/48837 introduced a panic in apiextension-apiserver triggered by the `hack/test-update-storage-objects.sh` script in CI.
Automatic merge from submit-queue
Increase default value of apps/v1beta2 DeploymentSpec.RevisionHistoryLimit to 10
**What this PR does / why we need it**:
All controllers that use the `RevisionHistoryLimit` field have a default value of 10 for the field, except for `Deployment`, which has a default of 2. We should increase it to 10 for consistency on its default value across controllers.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#49913
**Special notes for your reviewer**:
/cc @janetkuo @foxish @liyinan926
**Release note**:
```release-note
Increase default value of apps/v1beta2 DeploymentSpec.RevisionHistoryLimit to 10
```
Automatic merge from submit-queue
fix typo in staging/src/k8s.io/apiserver/pkg/server/config.go
**What this PR does / why we need it**: Fix a typo `It's members are sorted roughly in order of importance for composers.` in `staging/src/k8s.io/apiserver/pkg/server/config.go`.
**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`
Automatic merge from submit-queue
Switch from package syscall to golang.org/x/sys/unix
**What this PR does / why we need it**:
The syscall package is locked down and the comment in https://github.com/golang/go/blob/master/src/syscall/syscall.go#L21-L24 advises to switch code to use the corresponding package from golang.org/x/sys. This PR does so and replaces usage of package syscall with package golang.org/x/sys/unix where applicable. This will also allow to get updates and fixes
without having to use a new go version.
In order to get the latest functionality, golang.org/x/sys/ is re-vendored. This also allows to use Eventfd() from this package instead of calling the eventfd() C function.
**Special notes for your reviewer**:
This follows previous works in other Go projects, see e.g. moby/moby#33399, cilium/cilium#588
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Fix comment of request.go
**What this PR does / why we need it**:
Fix comment of request.go
**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
```
Automatic merge from submit-queue
client-gen: don't ignore nil clientsets
Closes https://github.com/kubernetes/client-go/issues/240
When a clientset is nil, fail fast instead of returning a nil value as an interface.
/cc @kubernetes/sig-api-machinery-pr-reviews
Automatic merge from submit-queue (batch tested with PRs 48365, 49902, 49808, 48722, 47045)
Improve shared informer notification dispatching
**What this PR does / why we need it**:
Locks and channels don't play well together. This is an attempt to remove locks and only use channels in shared informer. It looks much cleaner to me.
**Release note**:
```release-note
NONE
```
@deads2k @ncdc
Automatic merge from submit-queue
remove dead log handler and increase verbosity
We had a handler that no one was using and this bumps the verbosity slightly (2->3) to reduce noise at 2.
Automatic merge from submit-queue (batch tested with PRs 50000, 49954, 49943, 50018, 49607)
change apps/v1beta2 StatefulSet observedGeneration from a pointer to an int for consistency
**What this PR does / why we need it**:
change the StatefulSet observedGeneration from a pointer to an int for consistency
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#49623
xref #49135
**Special notes for your reviewer**:
/cc @janetkuo @foxish @kow3ns
**Release note**:
```release-note
change apps/v1beta2 StatefulSet observedGeneration (optional field) from a pointer to an int for consistency
```
Automatic merge from submit-queue (batch tested with PRs 49237, 49656, 49980, 49841, 49899)
make admission tolerate object without objectmeta for errors
Not all object have ObjectMeta (see SARs for instance). Admission should tolerate this condition without giving meaningless errors.
@derekwaynecarr ptal
@php-coder fyi
Automatic merge from submit-queue (batch tested with PRs 49989, 49806, 49649, 49412, 49512)
This adds an etcd health check endpoint to kube-apiserver
addressing https://github.com/kubernetes/kubernetes/issues/48215.
**What this PR does / why we need it**:
This ensures kube-apiserver `/healthz` endpoint fails whenever connectivity cannot be established to etcd, also ensures the etcd preflight checks works with unix sockets
**Which issue this PR fixes**: fixes#48215
**Special notes for your reviewer**:
This PR does not use the etcd client directly as the client object is wrapped behind the storage interface and not exposed directly for use, so I decided to reuse what's being done in the preflight. So this will only check fail for connectivity and not etcd auth related problems. I did not write tests for the endpoint because I couldn't find examples that I could follow for writing tests for healthz related endpoints, I'll be willing to write those tests if someone can point me at a relevant one.
**Release note**:
```release-note
Add etcd connectivity endpoint to healthz
```
@deads2k please help review, thanks!
Automatic merge from submit-queue
cleanup dead installer code
cleans up some installer code that was dead and reorders a little of the flow to reduce complexity.
@kubernetes/sig-api-machinery-misc
Automatic merge from submit-queue (batch tested with PRs 50029, 48517, 49739, 49866, 49782)
Update generated deepcopy code
**What this PR does / why we need it**:
In generated deepcopy code, the method names in comments do not match the real method names.
**Which issue this PR fixes**: fixes#49755
**Special notes for your reviewer**:
/assign @sttts @caesarxuchao
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 49990, 49997, 44278, 49936, 49891)
adds an admission plugin to the sample apiserver.
**What this PR does / why we need it**:
adds an admission plugin to the sample apiserver.
the admission plugin checks whether `Flunder.Name` is not on the banned list.
including a unit test with various test scenarios.
**Special notes for your reviewer**:
https://github.com/kubernetes/kubernetes/issues/47868
**Release note**:
```
NONE
```
Automatic merge from submit-queue
fix sample-apiserver apiservice.yaml to add groupPriorityMinimum
fix sample-apiserver apiservice.yaml example to add groupPriorityMinimum and versionPriority, which is added in v1.7
**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
NONE
```
Automatic merge from submit-queue (batch tested with PRs 49992, 48861, 49267, 49356, 49886)
Reintegrate aggregation support for OpenAPI
Reintegrating changes of #46734
Changes summary:
- Extracted all OpenAPI specs to new repo `kube-openapi`
- Make OpenAPI spec aggregator to copy and rename any non-requal model (even with documentation change only).
- Load specs when adding APIServices and retry on failure until successful spec retrieval or a 404.
- Assumes all Specs except aggregator's Spec are static
- A re-register of any APIService will result in updating the spec for that service (Suggestion for TPR: they should be registered to aggregator API Server, Open for discussion if any more changes needed for another PR.)
fixes#48548
Automatic merge from submit-queue (batch tested with PRs 49992, 48861, 49267, 49356, 49886)
Correctly handle empty watch event cache
Fixes https://github.com/kubernetes/kubernetes/issues/49956
Introduced by ada60236f7 which did not adjust the oldest available resourceVersion for an empty watch event cache.
Exposed by 74b9ba3b4d, which allowed controllers to get list results from etcd before the watch cache is ready (normally they list with resourceVersion=0 which serves the list request from the watch cache, blocking until it is ready)
When the watch cache had an empty cache of watch events, it currently allows establishing a watch as if it can deliver a watch event for its currently synced resourceVersion. This results in an off-by-one error which can result in a missed watch event.
Scenario:
bob:
1. creates object at resourceVersion=11
sally:
1. does a list API request, gets a list resourceVersion of 10 (just before bob creates the object)
2. starts watch handled by watch cache at resourceVersion=10
Watch cache:
1. initial list gets resourceVersion=11, including the item created by bob
2. when determining the initial watch events to send to sally's watch, there are no watch events in the cache, so no initial watch events are sent.
3. the cache listerwatcher watches etcd starting at resourceVersion=11, so future events are fed into the event cache and to sally's watch
The watch cache should have dropped sally's watch from resourceVersion=10 with a "gone" error, since it can't deliver the watch event for resourceVersion=11. This would force sally to relist (where she would get a list at resourceVersion=11) and rewatch (from resourceVersion=11)
This particularly affects tests that create CRD/TPRs and establish watches on the new types as the storage layer's watch cache is also populating for that type.
```release-note
Fix a bug in watch cache sometimes causing missing events after watch cache initialization.
```
Automatic merge from submit-queue (batch tested with PRs 46519, 49794, 49720, 49692, 49821)
fix missing verb at end of format string
**What this PR does / why we need it**:
A missing verb at end of format string in Errorf call happens in `vendor/k8s.io/client-go/plugin/pkg/client/auth/oidc/oidc_test.go`, This PR fixes this problem.
**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`
Automatic merge from submit-queue
Add KMS plugin registry
Allows supporting KMS services as encryption providers using a plugin mechanism similar to admission plugins.
Simplifies #48574
Progresses #48522
@deads2k PTAL
Automatic merge from submit-queue (batch tested with PRs 49651, 49707, 49662, 47019, 49747)
conversion-gen: support recursive types
Currently, conversion-gen goes into an infinite recursion for recursive types. This fixes it to support recursive types.
Needed for #47263.
**Release note**:
```release-note
NONE
```
/cc @sttts
Automatic merge from submit-queue (batch tested with PRs 49651, 49707, 49662, 47019, 49747)
Add support for `no_new_privs` via AllowPrivilegeEscalation
**What this PR does / why we need it**:
Implements kubernetes/community#639
Fixes#38417
Adds `AllowPrivilegeEscalation` and `DefaultAllowPrivilegeEscalation` to `PodSecurityPolicy`.
Adds `AllowPrivilegeEscalation` to container `SecurityContext`.
Adds the proposed behavior to `kuberuntime`, `dockershim`, and `rkt`. Adds a bunch of unit tests to ensure the desired default behavior and that when `DefaultAllowPrivilegeEscalation` is explicitly set.
Tests pass locally with docker and rkt runtimes. There are also a few integration tests with a `setuid` binary for sanity.
**Release note**:
```release-note
Adds AllowPrivilegeEscalation to control whether a process can gain more privileges than it's parent process
```
Automatic merge from submit-queue (batch tested with PRs 49651, 49707, 49662, 47019, 49747)
StatefulSet: Remove `initialized` annotation from apps/v1beta2.
The annotation was already removed from apps/v1beta1 in #49251, but this copy survived due to another concurrent PR.
ref #41605
Automatic merge from submit-queue (batch tested with PRs 49538, 49708, 47665, 49750, 49528)
Enable garbage collection of custom resources
Enhance the garbage collector to periodically refresh the resources it monitors (via discovery) to enable custom resource definition GC (addressing #44507 and reverting #47432).
This is a replacement for #46000.
/cc @lavalamp @deads2k @sttts @caesarxuchao
/ref https://github.com/kubernetes/kubernetes/pull/48065
```release-note
The garbage collector now supports custom APIs added via CustomeResourceDefinition or aggregated apiservers. Note that the garbage collector controller refreshes periodically, so there is a latency between when the API is added and when the garbage collector starts to manage it.
```
Automatic merge from submit-queue (batch tested with PRs 49538, 49708, 47665, 49750, 49528)
Use the core client with version
**What this PR does / why we need it**:
Replace the **deprecated** `clientSet.Core()` with `clientSet.CoreV1()`.
**Which issue this PR fixes**: fixes#49535
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
SuggestClientDelay is returning whether the server has requested that
the client delay their next action. It is *not* about whether the client
should retry the action. Webhook was using it incorrectly, and the
method is now up to date.
Our rules are that code of the error must match code of the response. We
were also not setting the correct reason. This updates the timeout
filter to be consistent with other clients, without changing the error
code (504 is correct). The new message properly indicates the request
may still be running, which the old message did not do.
The POSIX standard restricts environment variable names to uppercase
letters, digits, and the underscore character in shell contexts only.
For generic application usage, it is stated that all other characters
shall be tolerated.
This change relaxes the rules to some degree. Namely, we stop requiring
environment variable names to be strict C_IDENTIFIERS and start
permitting lowercase, dot, and dash characters.
Public container images using environment variable names beyond the
shell-only context can benefit from this relaxation. Elasticsearch is
one popular example.
Currently, the conversion-gen goes into an infinite recursion
for recursive types.
rename: currentlyBuildingTypes -> alreadyVisitedTypes
use a cachingEqual func
update comment
Automatic merge from submit-queue
copy OWNERS to k8s.io/api
`staging/src/k8s.io/api/OWNERS` is combination of `pkg/api/OWNERS` and `pkg/apis/OWNERS`. Other `OWNERS` files are copied from `pkg/apis/<group_name>/OWNERS`.
Since this PR is essentially copying files, so we don't need approval from everyone listed in the OWNERS.
Automatic merge from submit-queue
Fix crd delete nil pointer in example
**What this PR does / why we need it**:
When error is `IsAlreadyExists`, crd will be nil, then `defer` statement will `nil pointer`.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Add apiserver metric for response sizes
Fixes https://github.com/kubernetes/kubernetes/issues/47728
This should help us understand GET/LIST call latencies better. It'll also help catch differences in object sizes across kubemark and real cluster.
I'm labelling the metrics by namespace (hoping that there won't be toooo many of them).
/cc @smarterclayton @gmarek
cc @kubernetes/sig-scalability-misc @kubernetes/sig-api-machinery-misc @lavalamp @wojtek-t
Automatic merge from submit-queue (batch tested with PRs 49712, 49694, 49714, 49670, 49717)
fix arg type error in printf
**What this PR does / why we need it**:
A value of wrong type is passed as arg to a `Errorf` in `vendor/k8s.io/apimachinery/pkg/fields/selector_test.go`, This PR fixes this problem.
**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`
Enhance the garbage collector to periodically refresh the resources it
monitors (via discovery) to enable custom resource definition GC.
This implementation caches Unstructured structs for any kinds not
covered by a shared informer. The existing meta-only codec only supports
compiled types; an improved codec which supports arbitrary types could
be introduced to optimize caching to store only metadata for all
non-informer types.
Automatic merge from submit-queue (batch tested with PRs 49081, 49318, 49219, 48989, 48486)
Use case-insensitive header keys for `--requestheader-group-headers`.
This flag is documented as being case-insensitive, but the code was
doing a case-sensitive map lookup.
**Release note**:
```release-note
Bug fix: Parsing of `--requestheader-group-headers` in requests should be case-insensitive.
```
Automatic merge from submit-queue (batch tested with PRs 47738, 49196, 48907, 48533, 48822)
Bumps go-oidc version to include fix for jwt header parsing
**What this PR does / why we need it**:
This bumps the go-oidc dependency to use a fix merged in https://github.com/coreos/go-oidc/pull/153 for OIDC providers that don't set an `Expires` header
**Which issue this PR fixes** :
Partially addresses #42654
Also related: https://github.com/coreos/go-oidc/issues/136
**Special notes for your reviewer**:
None
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 47738, 49196, 48907, 48533, 48822)
ParseEncryptionConfiguration: simplify code
**What this PR does / why we need it**:
Reorder `if`-s to make code a bit more readable. It also improves godoc comment and error message.
**Release note**:
```release-note
NONE
```
PTAL @sakshamsharma
Automatic merge from submit-queue (batch tested with PRs 49238, 49595, 43494, 47897, 48905)
adds an admission plugin initializer to the sample apiserver.
**What this PR does / why we need it**:
this PR adds an admission plugin initializer to the sample apiserver.
the plugin initializer is going to be used by an admission plugin
that will use generated informers/listers to list the cluster-scoped resources.
#47868
**Release note**:
```
NONE
```
Automatic merge from submit-queue (batch tested with PRs 49238, 49595, 43494, 47897, 48905)
Add apps/v1beta2.ReplicaSet
~Depends on #48746~ (merged)
~Depends on #49357~ (merged)
xref: #49135
```release-note
Add a new API object apps/v1beta2.ReplicaSet
```
Automatic merge from submit-queue (batch tested with PRs 49665, 49689, 49495, 49146, 48934)
make it possible to allow discovery errors for controllers
Update the discovery client to return partial discovery information *and* an error. Since we can aggregate API servers, discovery of some resources can fail independently. Callers of this function who want to tolerate the errors can, existing callers will still get an error and fail in normal blocks.
@kubernetes/sig-api-machinery-misc @sttts
Automatic merge from submit-queue (batch tested with PRs 47357, 49514, 49271, 49572, 49476)
Updates etcd-client to 3.1.10
I have no idea why azure sdk update became transitive but godeps we're restored before update
Fixes: https://github.com/kubernetes/kubernetes/issues/49386
xref: https://github.com/kubernetes/kubernetes/pull/49393
```
NONE
```
/cc @kubernetes/sig-scalability-pr-reviews @kubernetes/sig-api-machinery-misc @hongchaodeng @wojtek-t
Automatic merge from submit-queue (batch tested with PRs 49259, 49350)
Add envelope encryption transformer
Essential to implement envelope encryption, using a KEK-DEK based encryption scheme which uses an external root of trust (cloudkms, hardware etc).
* Caches known DEKs.
* Creates a new DEK for each write (most common and recommended way of implementing envelope encryption).
* Relies on an implementation of `envelope.Service` which actually implements the encryption and decryption using the external root of trust.
Essential for #48522
@smarterclayton @jcbsmpsn @cheftako @lavalamp @php-coder @destijl @cjcullen
This PR is generic, and independent of any cloudprovider / cloud / KMS code.
For more context: #48574
Automatic merge from submit-queue (batch tested with PRs 49259, 49350)
update json-patch to fix nil value issue when creating mergepatch
**What this PR does / why we need it**:
When [creating a patch for merge](https://github.com/kubernetes/kubernetes/blob/master/pkg/kubectl/cmd/annotate.go#L255), nil value will be considered as different value. This has been fixed and merged in [evanphx/json-patch #45](https://github.com/evanphx/json-patch/pull/45).
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#49044
**Special notes for your reviewer**:
/cc @MikeSpreitzer @mengqiy
**Release note**:
```release-note
Fix nil value issue when creating json patch for merge
```
Automatic merge from submit-queue (batch tested with PRs 48976, 49474, 40050, 49426, 49430)
apimachinery: fail early with deepcopy problems during roundtrip tests
If deepcopy is broken for some type, it's easy to diagnose. This PR let's the roundtrip test to fail early in this case.
Automatic merge from submit-queue (batch tested with PRs 48224, 45431, 45946, 48775, 49396)
Expose informer constructors
**What this PR does / why we need it**:
See #45939
**Which issue this PR fixes**
Fixes#45939
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 48224, 45431, 45946, 48775, 49396)
[client-go] Fake Dynamic Client
This commit converts `"k8s.io/client-go/dynamic".Client` to an interface, and implements fake versions of both `ClientPool` and `Client`. This allows components which make uses of these clients to be tested in the same way that clientset-based components can be tested, using the standard `testing.Fake` machinery.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 48224, 45431, 45946, 48775, 49396)
add reflector metrics
This adds metrics (optionally prometheus) to reflectors so that you can see when one reflector is behaving poorly and just how poorly its doing.
@eparis
```release-note
Adds metrics for checking reflector health.
```
Automatic merge from submit-queue (batch tested with PRs 49286, 49550)
Remove myself from a bunch of places
I am assigned in reviews which I never get to do. I prefer drive-bys whenever I can do them rather than the bot choosing myself in random, ends up being mere spam.
@smarterclayton please approve.
Kubernetes Submit Queue