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add tokenreviews endpoint to implement webhook
Wires up an API resource under `apis/authentication.k8s.io/v1beta1` to expose the webhook token authentication API as an API resource. This allows one API server to use another for authentication and uses existing policy engines for the "authoritative" API server to controller access to the endpoint.
@cjcullen you wrote the initial type
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Fix "PVC Volume not detached if pod deleted via namespace deletion" issue
Fixes#29051: "PVC Volume not detached if pod deleted via namespace deletion"
This PR:
* Fixes a bug in `desired_state_of_the_world_populator.go` to check the value of `exists` returned by the `podInformer` so that it can delete pods even if the delete event is missed (or fails).
* Reduces the desired state of the world populators sleep period from 5 min to 1 min (reducing the amount of time a volume would remain attached if a volume delete event is missed or fails).
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Allow mounts to run in parallel for non-attachable volumes
This PR:
* Fixes https://github.com/kubernetes/kubernetes/issues/28616
* Enables mount volume operations to run in parallel for non-attachable volume plugins.
* Enables unmount volume operations to run in parallel for all volume plugins.
* Renames `GoRoutineMap` to `GoroutineMap`, resolving a long outstanding request from @thockin: `"Goroutine" is a noun`
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ImagePuller refactoring
A plain refactoring
- Moving image pullers to a new pkg/kubelet/images directory
- Hiding image pullers inside the new ImageManager
The next step is to consolidate the logic of the serialized and the parallel image pullers inside ImageManager
xref: #25577
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Kubelet: Set PruneChildren when removing image.
This is a bug introduced during switching to engine-api. https://github.com/kubernetes/kubernetes/issues/23563.
When removing image, there is an option `noprune`:
```
If prune is true, ancestor images will each attempt to be deleted quietly.
```
In go-dockerclient, the default value of the option is ["noprune=false"](https://github.com/fsouza/go-dockerclient/blob/master/image.go#L171), which means that ancestor images should be also removed. This is the expected behaviour.
However in engine-api, the option is changed to `PruneChildren`, and the default value is `PruneChildren=false`, which means that ancestor images won't be removed.
This makes `ImageRemove` only remove the first layer of the image, which causes the image garbage collection not working as expected.
This should be fixed in 1.3.
And thanks to @ronnielai for finding the bug! :)
/cc @kubernetes/sig-node
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docker_manager: Correct determineContainerIP args
This could result in the network plugin not retrieving the pod ip in a
call to SyncPod when using the `exec` network plugin.
The CNI and kubenet network plugins ignore the name/namespace arguments,
so they are not impacted by this bug.
I verified the second included test failed prior to correcting the
argument order.
Fixes#29161
cc @yujuhong
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pkg/probe/http: don't compare error strings in tests
TestHTTPProbeChecker fails on the Go1.7 release candidates. The
package's history show that this was the case for Go1.5 and Go1.6
as well.
The test depend on errors holding specific string values, behavior
not guarenteed in the standard library API, and causing new test
failures every minor Go release. Just look for an error rather than
trying to inspect it using string comparison. If we feel this
impacts coverage we can add more test cases.
Fixes#15952
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Fix RBAC authorizer of ServiceAccount
RBAC authorizer assigns a role to a wrong service account.
How to reproduce
1.Create role and rolebinding to allow default user in kube-system namespace to read secrets in kube-system namespace.
```
# kubectl create -f role.yaml
# kubectl create -f binding.yaml
```
```yaml
# role.yaml
kind: Role
apiVersion: rbac.authorization.k8s.io/v1alpha1
metadata:
name: secret-reader
namespace: kube-system
rules:
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get", "watch", "list"]
nonResourceURLs: []
```
```yaml
# binding.yaml
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1alpha1
metadata:
name: read-secrets
namespace: kube-system
subjects:
- kind: ServiceAccount
name: default
namespace: kube-system
roleRef:
kind: Role
namespace: kube-system
name: secret-reader
apiVersion: rbac.authorization.k8s.io/v1alpha1
```
2.Set a credential of default user
```
$ kubectl config set-credentials default_user --token=<token_of_system:serviceaccount:kube-system:default>
$ kubectl config set-context default_user-context --cluster=test-cluster --user=default_user
$ kubectl config use-context default_user-context
```
3.Try to get secrets as default user in kube-system namespace
```
$ kubectl --namespace=kube-system get secrets
the server does not allow access to the requested resource (get secrets)
```
As shown above, default user could not access to secrets.
But if I have kube-system user in default namespace, it is allowed access to secrets.
4.Create a service account and try to get secrets as kube-system user in default namespace
```
# kubectl --namespace=default create serviceaccount kube-system
serviceaccount "kube-system" created
$ kubectl config set-credentials kube-system_user --token=<token_of_system:serviceaccount:default:kube-system>
$ kubectl config set-context kube-system_user-context --cluster=test-cluster --user=kube-system_user
$ kubectl config use-context kube-system_user-context
$ kubectl --namespace=kube-system get secrets
NAME TYPE DATA AGE
default-token-8pyb3 kubernetes.io/service-account-token 3 4d
```
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Information is opposite to real meaning to express
master is not equal to expectedMaster, the meaning should be the master is unexpected:
master, err := mesosCloud.Master(clusterName)
if master != expectedMaster {
t.Fatalf("Master returns the expected value: (expected: %#v, actual: %#v", expectedMaster, master)
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format number not consistent with real variable number
glog.Infof format number not consistent with real variable number， should add %s for second var because loadBalancerName is string:
func (c *Cloud) ensureLoadBalancer(namespacedName types.NamespacedName, loadBalancerName string, ...
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Allow handlers earlier in a request flow to inject a UID for an object
This lets admission controllers specify a stable UID for an object prior to its creation. That lets the admission controller then record a reference to the object on another resource using that stable UID prior to the object being created. This would be a prerequisite for supporting quota reservations.
/cc @smarterclayton @lavalamp @deads2k
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Make "attach" and "exec" rejection in proxy more explicit
```release-note
kubectl proxy changed to now allow urls to pods with "attach" or "exec" in the pod name
```
The more explicit regular expression for rejection makes a possibility of accessing pods (or any other resources) which contain "attach" or "exec" in their names via proxy API. It was not possible before.
Also, the reference for "run" resource was removed, because it doesn't exist in any of k8s APIs currently.
Fixes: #21464
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Move ExtractPodBandwidthResources test into appropriate package
Found during #28511, this test is in the wrong package currently.
cc @kubernetes/sig-network
Allow mount volume operations to run in parallel for non-attachable
volume plugins.
Allow unmount volume operations to run in parallel for all volume
plugins.
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AWS: Added experimental option to skip zone check
This pull request resolves#28380. In the vast majority of cases, it is appropriate to validate the AWS region against a known set of regions. However, there is the edge case where this is undesirable as Kubernetes may be deployed in an AWS-like environment where the region is not one of the known regions.
By adding the optional **DisableStrictZoneCheck true** to the **[Global]** section in the aws.conf file (e.g. /etc/aws/aws.conf) one can bypass the ragion validation.
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Format apiserver options
Trivial change, code formatting only: it was hard to read long lines, and my editor was really slow when scrolling through them.
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Certificate signing controller for TLS bootstrap (alpha)
The controller handles generating and signing certificates when a CertificateSigningRequest has the "Approved" condition. Uses cfssl to support a wide set of possible keys and algorithms. Depends on PR #25562, only the last two commits are relevant to this PR.
cc @mikedanese
[]()
The more explicit regular expression for rejection makes a
possibility of accessing pods (or any other resources) which
contain "attach" or "exec" in their names via proxy API. It
was not possible before.
Also, the reference for "run" resource was removed, because
it doesn't exist in any of k8s APIs currently.
Fixes: #21464
TestHTTPProbeChecker fails on the Go1.7 release candidates. The
package's history show that this was the case for Go1.5 and Go1.6
as well.
The test depend on errors holding specific string values, behavior
not guarenteed in the standard library API, and causing new test
failures every minor Go release. Just look for an error rather than
trying to inspect it using string comparison. If we feel this
impacts coverage we can add more test cases.
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Use Infof/Warningf when appropriate
When we use a format string, we should use Infof/Warningf instead
of Info/Warning
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Delete redundant if condition
The case `containerStatus == nil` has already been checked just above. It's redundant here.
