Automatic merge from submit-queue (batch tested with PRs 37032, 38119, 38186, 38200, 38139)
Detect long-running requests from parsed request info
Follow up to https://github.com/kubernetes/kubernetes/pull/36064
Uses parsed request info to more tightly match verbs and subresources
Removes regex-based long-running request path matching (which is easily fooled)
```release-note
The --long-running-request-regexp flag to kube-apiserver is deprecated and will be removed in a future release. Long-running requests are now detected based on specific verbs (watch, proxy) or subresources (proxy, portforward, log, exec, attach).
```
Automatic merge from submit-queue (batch tested with PRs 38194, 37594, 38123, 37831, 37084)
remove unnecessary fields from genericapiserver config
Cleans up some unnecessary fields in the genericapiserver config.
This removes all dependencies on Config during cert generation, only operating
on ServerRunOptions. This way we get rid of the repeated call of Config.Complete
and cleanly stratify the GenericApiServer bootstrapping.
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:
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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
Remove static kubelet client, refactor ConnectionInfoGetter
Follow up to https://github.com/kubernetes/kubernetes/pull/33718
* Collapses the multi-valued return to a `ConnectionInfo` struct
* Removes the "raw" connection info method and interface, since it was only used in a single non-test location (by the "real" connection info method)
* Disentangles the node REST object from being a ConnectionInfoProvider itself by extracting an implementation of ConnectionInfoProvider that takes a node (using a provided NodeGetter) and determines ConnectionInfo
* Plumbs the KubeletClientConfig to the point where we construct the helper object that combines the config and the node lookup. I anticipate adding a preference order for choosing an address type in https://github.com/kubernetes/kubernetes/pull/34259
Automatic merge from submit-queue
Run rbac authorizer from cache
RBAC authorization can be run very effectively out of a cache. The cache is a normal reflector backed cache (shared informer).
I've split this into three parts:
1. slim down the authorizer interfaces
1. boilerplate for adding rbac shared informers and associated listers which conform to the new interfaces
1. wiring
@liggitt @ericchiang @kubernetes/sig-auth
Automatic merge from submit-queue
WantsAuthorizer admission plugin support
The next step of PSP admission is to be able to limit the PSPs used based on user information. To do this the admission plugin would need to make authz checks for the `user.Info` in the request. This code allows a plugin to request the injection of an authorizer to allow it to make the authz checks.
Note: this could be done with a SAR, however since admission is running in the api server using the SAR would incur an extra hop vs using the authorizer directly.
@deads2k @derekwaynecarr
Automatic merge from submit-queue
clean api server cruft
Some cruft has developed over refactors. Remove that cruft.
@liggitt probably last in the chain so far
Automatic merge from submit-queue
Enable service account signing key rotation
fixes#21007
```release-note
The kube-apiserver --service-account-key-file option can be specified multiple times, or can point to a file containing multiple keys, to enable rotation of signing keys.
```
This PR enables the apiserver authenticator to verify service account tokens signed by different private keys. This can be done two different ways:
* including multiple keys in the specified keyfile (e.g. `--service-account-key-file=keys.pem`)
* specifying multiple key files (e.g. `--service-account-key-file current-key.pem --service-account-key-file=old-key.pem`)
This is part of enabling signing key rotation:
1. update apiserver(s) to verify tokens signed with a new public key while still allowing tokens signed with the current public key (which is what this PR enables)
2. give controllermanager the new private key to sign new tokens with
3. remove old service account tokens (determined by verifying signature or by checking creationTimestamp) once they are no longer in use (determined using garbage collection or magic) or some other algorithm (24 hours after rotation, etc). For the deletion to immediately revoke the token, `--service-account-lookup` must be enabled on the apiserver.
4. once all old tokens are gone, update apiservers again, removing the old public key.
Automatic merge from submit-queue
Set deserialization cache size based on target memory usage
**Special notes for your reviewer**:
This is the PR we talked about yesterday.
**Release note**:
```release-note
To reduce memory usage to reasonable levels in smaller clusters, kube-apiserver now sets the deserialization cache size based on the target memory usage.
```
