Pick a reasonable middle ground between allocating larger chunks of
memory (2048 * ~500b for pod slices) and having many small allocations
as the list is resized by preallocating capacity based on the expected
list size. At worst, we'll allocate a 1M slice for pods and only add
a single pod to it (if the selector is very specific).
The etcd3 storage now attempts to fill partial pages to prevent clients
having to make more round trips (latency from server to etcd is lower
than client to server). The server makes repeated requests to etcd of
the current page size, then uses the filter function to eliminate any
matches. After this change the apiserver will always return full pages,
but we leave the language in place that clients must tolerate it.
Reduces tail latency of large filtered lists, such as viewing pods
assigned to a node.
This script should run when user pass arguements like this:
generate-groups.sh deepcopy "k8s.io/coredump-detector/" "k8s.io/coredump-detector/apis/" "coredump:v1alpha1"
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Address code-gen issue 7 nil pointer when incorrect pkg name
**What this PR does / why we need it**:
When using the code-gen tool, if the comments in the ```doc.go``` file has a misspelled pkg name, it ends with a nil pointer. This can be difficult to debug. This PR fixes that by logging an error and continuing.
https://github.com/kubernetes/code-generator/issues/7
**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**:
I was not sure whether just exiting here would be correct behaviour as reading the code , I noticed in other places it continues if the pkg is nil.
Also perhaps I should use the ```glog.V(5).info``` ?
```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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code-generator: unify generator main funcs and prepare for launching from one binary
- remove "generated by client-gen with custom arguments" message as this does not
make sense in the times of k8s.io/code-generator
- unify generator main funcs and explicitly call pflag.AddFlags and pflag.Parse. This
will allow to instantiate the generators also from other places.
Requires https://github.com/kubernetes/gengo/pull/80.
Closes https://github.com/kubernetes/kubernetes/issues/53522.
BuildConfigFromFlags function already calls the InClusterConfig()
function. The `--master` flag was added to clarify the log warning
message from within the `BuildConfigFromFlags` function.
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Adjust defaults of audit webhook backends
This PR:
- increases the default buffer size to contain at lease on the order of magnitude audit events than it's possible to have simultaneous requests (500 AFAIR)
- increase the default batch size. From our load tests .95 size of the log entry is under 2.5KB, therefore 400 entry will sum up to ~1MB request, which sounds reasonable
- increase the initial backoff size. AFAIU, if the initial value is zero, all retries will be used in under 15 seconds (with 0.2 jitter and 1.5 factor), while the backend or a proxy can be unavailable for some reason for 30 seconds and more.
- add throttling to the batching audit webhook
A PR to make these parameters configurable will follow-up
@hzxuzhonghu implemented throttling part of this PR
```release-note
Adjust batching audit webhook default parameters: increase queue size, batch size, and initial backoff.
Add throttling to the batching audit webhook. Default rate limit is 10 QPS.
```
/cc @sttts @tallclair @CaoShuFeng @ericchiang @piosz
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Use pointer for PSP allow escalation
Fixes#53437
The `AllowPrivilegeEscalation` field was added to PodSpec and PodSecurityPolicySpec in 1.8.0.
In order to remain compatible with pre-1.8.0 behavior, PodSecurityPolicy objects created against a previous release must not restrict this field, which means the field must default to true in PodSecurityPolicySpec. However, the field was added as a `bool`, not a `*bool`, which means that no defaulting is possible.
We have two options:
1. Require all pre-existing PodSecurityPolicy objects that intend to allow privileged permissions to update to set this new field to true
2. Change the field to a `*bool` and default it to true.
This PR does the latter. With this change, we have the following behavior:
A 1.8.1+ client/server now has three ways to serialize:
* `nil` values are dropped from serialization (because `omitempty`), which is interpreted correctly by other 1.8.1+ clients/servers, and is interpreted as false by 1.8.0
* `false` values are serialized and interpreted correctly by all clients/servers
* `true` values are serialized and interpreted correctly by all clients/servers
A 1.8.0 client/server has two ways to serialize:
* `false` values are dropped from serialization (because `omitempty`), which is interpreted as `false` by other 1.8.0 clients/servers, but as `nil` (and therefore defaulting to true) by 1.8.1+ clients/servers
* `true` values are serialized and interpreted correctly by all clients/servers
The primary concern is the 1.8.0 server dropping the `false` value from serialization, but I consider the compatibility break with pre-1.8 behavior to be more severe, especially if we can resolve the regression in an immediate point release.
```release-note
PodSecurityPolicy: Fixes a compatibility issue that caused policies that previously allowed privileged pods to start forbidding them, due to an incorrect default value for `allowPrivilegeEscalation`. PodSecurityPolicy objects defined using a 1.8.0 client or server that intended to set `allowPrivilegeEscalation` to `false` must be reapplied after upgrading to 1.8.1.
```
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Support field selectors for CRDs
Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>
**What this PR does / why we need it**: allow field selectors to be used with custom resources
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#51046, fixes#49424
**Special notes for your reviewer**:
**Release note**:
```release-note
Custom resources served through CustomResourceDefinition now support field selectors for `metadata.name` and `metadata.namespace`.
```
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removes Authorizer and ExternalClientSet from kubeapiserver's admissi…
**What this PR does / why we need it**:
removes Authorizer and ExternalClientSet from kubeapiserver's admission initializer.
**Release note**:
```
NONE
```
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fix some typos in api/types
**What this PR does / why we need it**:
Fix some typos in api/types
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53420
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
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client-go: Truncate printed body based on Verbosity level
**What this PR does / why we need it**: If log verbosity is above 8, it will print the full request and response body. These might be very big (especially when downloading the openapi), and it takes multiple seconds just to print it ... Truncates the printing of that body if the level is less than 10.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: Vaguely related to #52089
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Make feature gate enablement checks lock-free
Since we almost never write to this object after initial creation (basically, just in tests or during API server startup), this is a good candidate for the ["read mostly"](https://golang.org/pkg/sync/atomic/#example_Value_readMostly) pattern which leaves the reads lock-free
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Add an option for turning on/off compaction from apiserver in etcd3 mode
…erver
**What this PR does / why we need it**:
This commit adds an option for controlling request of compaction to
etcd3 from apiserver. There is a situation that apiserver cannot fully
own its etcd cluster (e.g. sharing it with canal). In such a case,
apiserver should have limited access in terms of etcd's auth
functionality so it don't have a privilege to issue compaction
requests. It means that the compaction requests should be issued by
other component and apiserver's compaction requests are needless.
For such use cases, this commit adds a new flag
storagebackend.Config.DoCompaction. If the flag is true (default),
apiserver issues the compaction requests like current behaviour. If it
is false, apiserver doesn't issue the requests.
**Related issue (etcd)**
https://github.com/coreos/etcd/issues/8458
/cc @xiang90 @struz
**Release note:**
```release-note
Add --etcd-compaction-interval to apiserver for controlling request of compaction to etcd3 from apiserver.
```
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threadSafeMap: panic if index function call fails
**Which issue this PR fixes**
Fixes#43605
**Release note**:
```release-note
NONE
```
/kind bug
/sig api-machinery
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Ring buffer for shared informer notifications
**What this PR does / why we need it**:
Improves memory allocation for shared informer listeners. Instead of always appending to the slice use as a ring buffer, avoiding reslice operations as long as there is room in the slice. See https://github.com/kubernetes/kubernetes/pull/47045#issuecomment-317621259 for details. This is a follow up PR for #47045.
Results from BenchmarkListener:
```
Current code (from the #47045):
1000000 1540 ns/op 109 B/op 1 allocs/op
```
```
New code:
1000000 1162 ns/op 16 B/op 1 allocs/op
```
**Special notes for your reviewer**:
Only review the last commit, this branch is based on #47045 PR. I'll rebase onto master once it is merged.
**Release note**:
```release-note
NONE
```
/kind enhancement
/sig api-machinery
/cc @deads2k @ncdc
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fix sample-apiserver artifacts
The example yaml file for sample-apiserver has some errors. Fix them.
**Release note**:
```
NONE
```
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Endpoints can add a get or connect options type in their group
optionsExternalVersion is being used for shared types (meta.k8s.io). The
installer should first look in the current API group for GET and CONNECT
options objects before checking in `v1`.
OpenShift hit this while registering a new connect handler endpoint in an api group for an api that is aggregated. OpenShift should not be registering its API types into the core API group.
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Add 201/Status to the list of returned objects.
**What this PR does / why we need it**:
Adds 201/202 to the list of codes/objects returned by `POST` and 201 to the list of codes returned by `PUT` requests in Swagger/OpenAPI
**Special notes for your reviewer**:
This helps fix
https://github.com/kubernetes-client/csharp/issues/29
**Release note**:
```release-note
Adds 201/202 to the list of codes/objects returned by `POST` and 201 to the list of codes returned by `PUT` requests in Swagger/OpenAPI
```
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vendor/k8s.io/client-go/tools/record: Fix two swallowed errors in tests
**What this PR does / why we need it**: Fixes two dropped errors in client-go.
```release-note NONE
```
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exposes a method on AdmissionOptions
**What this PR does / why we need it**:
exposes a method on AdmissionOptions that will set default admission plugin names when none were provided from the command line.
**Release note**:
```
NONE
```
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Add a negotiate method media type for use in explicit contexts
There are more cases now where we want to negotiate from contexts where we have a media type but no request.
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Fix pointer receiver handling in queryparams marshaler
**What this PR does / why we need it**:
`Time.MarshalQueryParameter()` and `Time.MarshalJSON()` try to handle nil pointer object (they call `t.IsZero()` which checks if t == nil) but fail because receiver is not a pointer so the dereference needed to pass it as receiver to these methods fails with npe.
In practice this happens with `Unstructured.SetDeletionTimestamp(Unstructured.GetDeletionTimestamp())`.
Here is the stacktrace of the failing test if receiver is not a pointer.
```go
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x1407969]
goroutine 22 [running]:
testing.tRunner.func1(0xc4204f0680)
/usr/local/Cellar/go/1.8/libexec/src/testing/testing.go:622 +0x29d
panic(0x1485a80, 0x1782bc0)
/usr/local/Cellar/go/1.8/libexec/src/runtime/panic.go:489 +0x2cf
k8s.io/kubernetes/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured.(*Unstructured).SetDeletionTimestamp(0xc420030790, 0x0)
/Users/ash2k/gopath/src/k8s.io/kubernetes/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured/unstructured.go:387 +0x29
k8s.io/kubernetes/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured.TestNilDeletionTimestamp(0xc4204f0680)
/Users/ash2k/gopath/src/k8s.io/kubernetes/staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured/unstructured_test.go:40 +0x4c
```
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fix fuzz of micro time
**Release note**:
```
NONE
```
/assign @sttts
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To be consistent with http package, check also no_proxy
**What this PR does / why we need it**:
Default http.ProxyFromEnvironment uses uppper case proxy
environment variables first, and if they are not defined,
tries lower case. For NewProxierWithNoProxyCIDR we should
provide similar user experience.
Example: cluster will not be able to access service or pod CIDRs in case user uses lower case version of proxy variables.
**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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Collapse all metrics handlers into common code
Remove the MonitorRequest method and replace with a method that takes
request.RequestInfo, which is our default way to talk about API objects.
Preserves existing semantics for calls.
Not for 1.8, but fixes the ugliness and code duplication in #52237
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Fixed intermitant e2e aggregator test on GKE.
**What this PR does / why we need it**: Issue was caused by another test cleaning up its namespace.
This caused the namespace controller to try to clean up that namespace.
This involves deleting all flunders under that namespace.
However the sample-apiserver was not honoring the namespace filter.
So the flunders for the test would randomly disappear.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50945
**Special notes for your reviewer**: Requires we fix the container image to contain this fix to work.
**Release note**:
```release-note NONE
```
Fixes issues/50945.
Issue was caused by another test cleaning up its namespace.
This caused the namespace controller to try to clean up that namespace.
This involves deleting all flunders under that namespace.
However the sample-apiserver was not honoring the namespace filter.
So the flunders for the test would randomly disappear.
Fixed image path to pick up newly built fixes from this PR.
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add verify case in index_test.go
**What this PR does / why we need it**:
There only verify the length of the result in the index_test and we should also verify the content of the result.
**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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ProducesObject should only update the returned API object resource documentation
This should be a no-op for Kubernetes (the only rest.Storage that specifies ProducesObject() is pod logs, on GET), but will allow issues such as openshift/origin#8345 to be resolved (where generated API documentation is currently incorrect due to the asymmetry between the object kind sent and received by the API)
```release-note NONE```
optionsExternalVersion is being used for shared types (meta.k8s.io). The
installer should first look in the current API group for GET and CONNECT
options objects before checking in `v1`.
Currently openstack cloud provider just support keystone v2.0 and v3
The latest Identity Service is publishing an ID of v3.8, we should
update gophercloud to recognize v3.8 as a valid version id.
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bazel: build/test almost everything
**What this PR does / why we need it**: Miscellaneous cleanups and bug fixes. The main motivating idea here was to make `bazel build //...` and `bazel test //...` mostly work. (There's a few reasons these still don't work, but we're a lot closer.)
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/assign @BenTheElder @mikedanese @spxtr
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Enable go race detection for bazel tests.
Testing if setting `features = ["-race"]` fixes the breaks in #50792.
**Release note**:
```release-note
NONE
```
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Preserve leading and trailing slashes on proxy subpaths
subresource parsing was not populating path parameters correctly (leading and trailing slashes were being stripped)
this caused bad locations to be sent to the proxy, causing https://github.com/kubernetes/kubernetes/issues/52022. the first attempt to fix that (#52065) unconditionally prefixed '/', which broke the redirect case (#52813#52729)
fixes#52813, fixes#52729
needs to be picked to 1.7 and 1.8
```release-note
Restores redirect behavior for proxy subresources
```
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Ensure we log the flag apiserver starts with.
Trying to make sure we always log the flags an instance of apiserver
starts with.
This can be especially valuable for emailed logs or e2e/kubemark tests.
**What this PR does / why we need it**: Ensures we log the flags an apiserver was started with.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #none
**Special notes for your reviewer**:
**Release note**:```release-note NONE
```
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Do deep copy instead of to and from JSON encoding
**What this PR does / why we need it**:
Unstructured converter encodes to JSON and then parses the result into a new object. For `Unstructured` this can be avoided by directly doing a deep copy. It is an optimization.
**Special notes for your reviewer**:
#47889 is somewhat related.
**Release note**:
```release-note
NONE
```
/sig api-machinery
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move specialDefaultResourcePrefixes out of vendor/k8s.io/apiserver
just a clean-up, fixes TODO: move out of this package, it is not generic
@sttts PTAL
/assign @sttts
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Avoid hard-coding location for auto-generated cert files
**What this PR does / why we need it**:
This fixes the confusing/incorrect help message for "--tls-cert-file" in apiserver package.
**Which issue this PR fixes**: fixes#51887
**Special notes for your reviewer**:
Please advise if a release note is needed.
**Release note**:
```release-note
NONE
```
Clayton Coleman