Automatic merge from submit-queue
redact detailed errors from healthz and expose in default policy
Makes `/healthz` less sensitive and exposes it by default.
@kubernetes/sig-auth-pr-reviews @kubernetes/sig-api-machinery-misc @liggitt
Automatic merge from submit-queue (batch tested with PRs 41667, 41820, 40910, 41645, 41361)
Switch admission to use shared informers
Originally part of #40097
cc @smarterclayton @derekwaynecarr @deads2k @liggitt @sttts @gmarek @wojtek-t @timothysc @lavalamp @kubernetes/sig-scalability-pr-reviews @kubernetes/sig-api-machinery-pr-reviews
Automatic merge from submit-queue
move kube-dns to a separate service account
Switches the kubedns addon to run as a separate service account so that we can subdivide RBAC permission for it. The RBAC permissions will need a little more refinement which I'm expecting to find in https://github.com/kubernetes/kubernetes/pull/38626 .
@cjcullen @kubernetes/sig-auth since this is directly related to enabling RBAC with subdivided permissions
@thockin @kubernetes/sig-network since this directly affects now kubedns is added.
```release-note
`kube-dns` now runs using a separate `system:serviceaccount:kube-system:kube-dns` service account which is automatically bound to the correct RBAC permissions.
```
Automatic merge from submit-queue
Make controller-manager resilient to stale serviceaccount tokens
Now that the controller manager is spinning up controller loops using service accounts, we need to be more proactive in making sure the clients will actually work.
Future additional work:
* make a controller that reaps invalid service account tokens (c.f. https://github.com/kubernetes/kubernetes/issues/20165)
* allow updating the client held by a controller with a new token while the controller is running (c.f. https://github.com/kubernetes/kubernetes/issues/4672)
Automatic merge from submit-queue
Switch resourcequota controller to shared informers
Originally part of #40097
I have had some issues with this change in the past, when I updated `pkg/quota` to use the new informers while `pkg/controller/resourcequota` remained on the old informers. In this PR, both are switched to using the new informers. The issues in the past were lots of flakey test failures in the ResourceQuota e2es, where it would randomly fail to see deletions and handle replenishment. I am hoping that now that everything here is consistently using the new informers, there won't be any more of these flakes, but it's something to keep an eye out for.
I also think `pkg/controller/resourcequota` could be cleaned up. I don't think there's really any need for `replenishment_controller.go` any more since it's no longer running individual controllers per kind to replenish. It instead just uses the shared informer and adds event handlers to it. But maybe we do that in a follow up.
cc @derekwaynecarr @smarterclayton @wojtek-t @deads2k @sttts @liggitt @timothysc @kubernetes/sig-scalability-pr-reviews
Automatic merge from submit-queue (batch tested with PRs 41378, 41413, 40743, 41155, 41385)
Reconcile bootstrap clusterroles on server start
Currently, on server start, bootstrap roles and bindings are only created if there are no existing roles or rolebindings.
Instead, we should look at each bootstrap role and rolebinding, and ensure it exists and has required permissions and subjects at server start. This allows seamless upgrades to new versions that define roles for new controllers, or add permissions to existing roles.
```release-note
Default RBAC ClusterRole and ClusterRoleBinding objects are automatically updated at server start to add missing permissions and subjects (extra permissions and subjects are left in place). To prevent autoupdating a particular role or rolebinding, annotate it with `rbac.authorization.kubernetes.io/autoupdate=false`.
```
Automatic merge from submit-queue (batch tested with PRs 41382, 41407, 41409, 41296, 39636)
Update to use proxy subresource consistently
Proxy subresources have been in place since 1.2.0 and improve the ability to put policy in place around proxy access.
This PR updates the last few clients to use proxy subresources rather than the root proxy
Automatic merge from submit-queue (batch tested with PRs 41357, 41178, 41280, 41184, 41278)
Switch RBAC subject apiVersion to apiGroup in v1beta1
Referencing a subject from an RBAC role binding, the API group and kind of the subject is needed to fully-qualify the reference.
The version is not, and adds complexity around re-writing the reference when returning the binding from different versions of the API, and when reconciling subjects.
This PR:
* v1beta1: change the subject `apiVersion` field to `apiGroup` (to match roleRef)
* v1alpha1: convert apiVersion to apiGroup for backwards compatibility
* all versions: add defaulting for the three allowed subject kinds
* all versions: add validation to the field so we can count on the data in etcd being good until we decide to relax the apiGroup restriction
```release-note
RBAC `v1beta1` RoleBinding/ClusterRoleBinding subjects changed `apiVersion` to `apiGroup` to fully-qualify a subject. ServiceAccount subjects default to an apiGroup of `""`, User and Group subjects default to an apiGroup of `"rbac.authorization.k8s.io"`.
```
@deads2k @kubernetes/sig-auth-api-reviews @kubernetes/sig-auth-pr-reviews
Automatic merge from submit-queue
give nodes update/delete permissions
delete permission is logically paired with create permission (and is used during self-registration scenarios when a node has been restarted and an existing node object has a mismatched externalID)
we already need to scope update nodes/status permission to only let a node update itself, and we would scope these at the same time.
fixes https://github.com/kubernetes/kubernetes/issues/41224
Automatic merge from submit-queue (batch tested with PRs 40574, 40806, 40308, 40771, 39440)
Add bootstrap cluster role for external pv provisioners
The set of permissions an external provisioner https://github.com/kubernetes/kubernetes/pull/30285 running as a pod will need. Technically in order to dynamically provision PVs one doesn't need to "update" PVCs or "watch" events but the controller https://github.com/kubernetes-incubator/nfs-provisioner/tree/master/controller we are recommending people use does those things to: set lock annotations on PVCs and watch `ProvisioningSucceeded`/`ProvisioningFailed` events.
Some external provisioners may need additional permissions, for example nfs-provisioner requires "get" access to Services and Endpoints when run "statefully." I think in that case we would recommend creating a new ClusterRole specific to that provisioner, using this as a base?
(This was to be a part of my redo/fix of the external e2e test https://github.com/kubernetes/kubernetes/pull/39545 but I'm submitting it as a separate PR for now due to some issues I had with running nfs-provisioner on gce.)
@kubernetes/sig-auth-misc ?
These files have been created lately, so we don't have much information
about them anyway, so let's just:
- Remove assignees and make them approvers
- Copy approves as reviewers
Automatic merge from submit-queue
make client-go more authoritative
Builds on https://github.com/kubernetes/kubernetes/pull/40103
This moves a few more support package to client-go for origination.
1. restclient/watch - nodep
1. util/flowcontrol - used interface
1. util/integer, util/clock - used in controllers and in support of util/flowcontrol
Automatic merge from submit-queue
Include "ingresses" resource in RBAC bootstrap roles
The bootstrap RBAC roles "admin", "edit", and "view" should all be able to apply their respective access verbs to the "ingresses" resource in order to facilitate both publishing Ingress resources (for
service administrators) and consuming them (for ingress controllers).
Note that I alphabetized the resources listed in the role definitions that I changed to make it easier to decide later where to insert new entries. The original order looked like it may have started out alphabetized, but lost its way. If I missed an intended order there, please advise.
I am uncertain whether this change deserves mention in a release note, given the RBAC feature's alpha state. Regardless, it's possible that a cluster administrator could have been happy with the previous set of permissions afforded by these roles, and would be surprised to discover that bound subjects can now control _Ingress_ resources. However, in order to be afflicted, that administrator would have had to have applied these role definitions again which, if I understand it, would be a deliberate act, as bootstrapping should only occur once in a given cluster.
The bootstrap RBAC roles "admin", "edit", and "view" should all be
able to apply their respective access verbs to the "ingresses"
resource in order to facilitate both publishing Ingress resources (for
service administrators) and consuming them (for ingress controllers).
Automatic merge from submit-queue
add patch RS to deployment controller
Found in http://gcsweb.k8s.io/gcs/kubernetes-jenkins/logs/ci-kubernetes-e2e-gci-gce/2841/artifacts/bootstrap-e2e-master/, `RBAC DENY: user "system:serviceaccount:kube-system:deployment-controller" groups [system:serviceaccounts system:serviceaccounts:kube-system system:authenticated] cannot "patch" on "replicasets.extensions/" in namespace "e2e-tests-deployment-3rj5g"
`
@kubernetes/sig-auth-misc
Automatic merge from submit-queue
Give replicaset controller patch permission on pods
Needed for AdoptPod/ReleasePod
Fixes denials seen in autoscaling test log:
`RBAC DENY: user "system:serviceaccount:kube-system:replicaset-controller" groups [system:serviceaccounts system:serviceaccounts:kube-system system:authenticated] cannot "patch" on "pods./"`
Automatic merge from submit-queue
Fix examples e2e permission check
Ref #39382
Follow-up from #39896
Permission check should be done within the e2e test namespace, not cluster-wide
Also improved RBAC audit logging to make the scope of the permission check clearer
Automatic merge from submit-queue (batch tested with PRs 39694, 39383, 39651, 39691, 39497)
Add support for groups to passwordfile
As we move deployment methods to using RBAC, it is useful to be able to place the admin user in the bootstrap kubeconfig files in a superuser group. The tokencsv file supports specifying group membership, but the basicauth file does not. This adds it for parity.
I plan to update the generated password file to put the admin user in a group (similar to the way https://github.com/kubernetes/kubernetes/pull/39537 puts that user in a group in the token file)
```release-note
--basic-auth-file supports optionally specifying groups in the fourth column of the file
```
Automatic merge from submit-queue (batch tested with PRs 38212, 38792, 39641, 36390, 39005)
Allow node-controller to update node status
ref: #39639
* adds required permissions to node-controller
* fixes typo in role name for pod-garbage-collector role
* adds event watching permissions to persistent volume controller
* adds event permissions to node proxier
Automatic merge from submit-queue
oidc auth-n plugin: enforce email_verified claim
This change causes the OpenID Connect authenticator to start
enforcing the 'email_verified' claim.
https://openid.net/specs/openid-connect-core-1_0.html#StandardClaims
If the OIDC authenticator uses the 'email' claim as a user's username
and the 'email_verified' is not set to `true`, reject that authentication attempt.
cc @erictune @kubernetes/sig-auth @mlbiam
```release-note
When using OIDC authentication and specifying --oidc-username-claim=email, an `"email_verified":true` claim must be returned from the identity provider.
```
This change causes the OpenID Connect authenticator to start
enforcing the 'email_verified' claim.
https://openid.net/specs/openid-connect-core-1_0.html#StandardClaims
If the OIDC authenticator uses the 'email' claim as a user's password
and the 'email_verified' holds the value false, reject that
authentication attempt.
If 'email_verified' is true or not present, continue as before.
Automatic merge from submit-queue (batch tested with PRs 35101, 38215, 38092)
auth duplicate detect
I think we should not allow people set duplicate tokens in token file or set duplicate usernames in password file. because the default action overwriting the old data may let people misunderstand.
Automatic merge from submit-queue (batch tested with PRs 38111, 38121)
remove rbac super user
Cleaning up cruft and duplicated capabilities as we transition from RBAC alpha to beta. In 1.5, we added a secured loopback connection based on the `system:masters` group name. `system:masters` have full power in the API, so the RBAC super user is superfluous.
The flag will stay in place so that the process can still launch, but it will be disconnected.
@kubernetes/sig-auth
Automatic merge from submit-queue (batch tested with PRs 36816, 37534)
Move pkg/api/unversioned to pkg/apis/meta/v1
This moves code from using pkg/api/unversioned to pkg/apis/meta/v1 with the `metav1` local package name.
Built on top of #37532 (the first three commits related to ExportOptions)
Part of #37530
Automatic merge from submit-queue
plumb in front proxy group header
Builds on https://github.com/kubernetes/kubernetes/pull/36662 and https://github.com/kubernetes/kubernetes/pull/36774, so only the last commit is unique.
This completes the plumbing for front proxy header information and makes it possible to add just the front proxy header authenticator.
WIP because I'm going to assess it in use downstream.
Automatic merge from submit-queue (batch tested with PRs 35300, 36709, 37643, 37813, 37697)
add rbac action to subjects type
This adds the ability to go from an authorization action to the list subjects who have the power to perform the action. This will be used to either back an RBAC specific endpoint or generic authorization endpoint. Because of the way authorization works today, the set of subjects returned will always be a subset of those with access since any authorizer can say yes.
@kubernetes/sig-auth
Automatic merge from submit-queue (batch tested with PRs 37945, 37498, 37391, 37209, 37169)
add controller roles
Upstream controller roles that have downstream.
@sttts this is a start at roles for controllers. I've made names match for now, but they could use some love in both the controller manager and here. I'd recommend using this as a starting point.
Automatic merge from submit-queue
auth delegation role
Add a bootstrap role for authentication and authorization delegation. Useful for extension API servers.
@kubernetes/sig-auth
Automatic merge from submit-queue
specify custom ca file to verify the keystone server
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**What this PR does / why we need it**:
Sometimes the keystone server's certificate is self-signed, mainly used for internal development, testing and etc.
For this kind of ca, we need a way to verify the keystone server.
Otherwise, below error will occur.
> x509: certificate signed by unknown authority
This patch provide a way to pass in a ca file to verify the keystone server when starting `kube-apiserver`.
**Which issue this PR fixes** : fixes#22695, #24984
**Special notes for your reviewer**:
**Release note**:
<!-- Steps to write your release note:
1. Use the release-note-* labels to set the release note state (if you have access)
2. Enter your extended release note in the below block; leaving it blank means using the PR title as the release note. If no release note is required, just write `NONE`.
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``` release-note
```
Automatic merge from submit-queue
Fix typos and englishify plugin/pkg
**What this PR does / why we need it**: Just typos
**Which issue this PR fixes**: `None`
**Special notes for your reviewer**: Just typos
**Release note**: `NONE`
Automatic merge from submit-queue
Allow webhook authorizer to use SubjectAccessReviewInterface
Refactors the authorization webhook to be able to be fed a kubeconfig file or a SubjectAccessReviewsInterface
Added tests to exercise retry logic, and ensure the correct serialized version is sent to the remote webhook (I also made sure the new tests passed on the current webhook impl in master)
c.f. https://github.com/kubernetes/kubernetes/pull/32547
c.f. https://github.com/kubernetes/kubernetes/pull/32518
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