Automatic merge from submit-queue (batch tested with PRs 40385, 40786, 40999, 41026, 40996)
kubeadm: change os.Remove to os.RemoveAll
**What this PR does / why we need it**: This would not correctly clean out the tmp dir, since os.Remove doesn't recursively remove dirs, which could exist in the tmp dir.
Unit tests are a WIP from #34136
**Special notes for your reviewer**: /cc @luxas @pires
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Replace hand-written informers with generated ones
Replace existing uses of hand-written informers with generated ones.
Follow-up commits will switch the use of one-off informers to shared
informers.
This is a precursor to #40097. That PR will switch one-off informers to shared informers for the majority of the code base (but not quite all of it...).
NOTE: this does create a second set of shared informers in the kube-controller-manager. This will be resolved back down to a single factory once #40097 is reviewed and merged.
There are a couple of places where I expanded the # of caches we wait for in the calls to `WaitForCacheSync` - please pay attention to those. I also added in a commented-out wait in the attach/detach controller. If @kubernetes/sig-storage-pr-reviews is ok with enabling the waiting, I'll do it (I'll just need to tweak an integration test slightly).
@deads2k @sttts @smarterclayton @liggitt @soltysh @timothysc @lavalamp @wojtek-t @gmarek @sjenning @derekwaynecarr @kubernetes/sig-scalability-pr-reviews
Automatic merge from submit-queue (batch tested with PRs 39681, 39321, 41018, 40883)
kubeadm: app/util/template.go has unit tests
**What this PR does / why we need it**: There was a TODO tag about adding unit tests, but unit tests have been added and the coverage for that file is ~90%. Tag should be removed.
Adding unit tests is a WIP from #34136
**Special notes for your reviewer**: /cc @luxas @pires
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Kubeadm discovery remove error passing
**What this PR does / why we need it**: In the app/discovery there is some confusion about the passing of error values created in the discovery/token, discovery/https/ and discovery/file pkgs. Since they always return `nil` , it was very confusing in discovery/flags.go why to propagate them up as if there was a chance for them to return a value other than `nil`. This change makes it much more clear what is being passed.
I noticed this as I was making a sweep through trying to add more unit tests and it was very confusing to read the code.
**Which issue this PR fixes** : fixes #https://github.com/kubernetes/kubeadm/issues/141
**Special notes for your reviewer**: /cc @luxas @pires
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
kubeadm: Remove the kubernetes.io/cluster-service label from the Deployment templates
**What this PR does / why we need it**:
As discussed on Slack, these labels have no function when not using the addon-manager, so it's best to remove them to avoid confusion.
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
@thockin @mikedanese @pires @MrHohn @bowei @dmmcquay @deads2k @philips
Automatic merge from submit-queue (batch tested with PRs 35782, 35831, 39279, 40853, 40867)
remove unnecessarily duplication since types collapsed
We collapsed duplicate types into client-go, so we get to clean this up.
@sttts as promised.
Automatic merge from submit-queue (batch tested with PRs 35782, 35831, 39279, 40853, 40867)
genericapiserver: cut off more dependencies – episode 7
Follow-up of https://github.com/kubernetes/kubernetes/pull/40822
approved based on #40363
Automatic merge from submit-queue
Removed HPA objects from extensions api group
fix#29778
``` release-note
HorizontalPodAutoscaler is no longer supported in extensions/v1beta1 version. Use autoscaling/v1 instead.
```
cc @kubernetes/autoscaling
Automatic merge from submit-queue
kubeadm: fix reset error logging.
**What this PR does / why we need it**: while investigating https://github.com/kubernetes/kubeadm/issues/142 I realized error logging was misleading. This PR is meant to fix it.
**Special notes for your reviewer**: /cc @luxas
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Move post processing/backward compatibility of openapi out of generic package
Post processing step was put into generic package and was the same for both k8s api server and federation api server. They have different backward compatibility list of types. This PR move that step out of generic package and put it in each server's file.
Automatic merge from submit-queue
kubeadm: Refactoring the apiconfig and addons phases
**What this PR does / why we need it**:
First commit: Fix the defaulting for AuthorizationMode - **Ready for review**
Second commit: Refactoring the apiconfig and addons phases in kubeadm - **work in progress, broken at the moment**
**Special notes for your reviewer**:
Please take a look at the first commit now. You can also see the direction I'm going with the addons and apiconfig phases.
For example, I'm using Go templates instead of creating native Go structs for kube-dns and kube-proxy now. The question is if I should do it for the RBAC rules as well, it might make sense there as well.
Converting the dns addon to a yaml spec makes it 100x easier to maintain when changes are made to the "upstream" DNS spec, and also more swappable. We could for instance have a configuration param for it for those who want a custom file, etc.
**Release note**:
```release-note
NONE
```
@mikedanese @pires @lukemarsden @errordeveloper @dgoodwin @liggitt @andrewrynhard
Automatic merge from submit-queue (batch tested with PRs 40574, 40806, 40308, 40771, 39440)
kubeadm: kube-proxy needs to know the pod subnet CIDR
**What this PR does / why we need it**: `kube-proxy` 1.5 has a new flag `cluster-cidr` that isn't specified by `kubeadm`, thus resulting in bug https://github.com/kubernetes/kubeadm/issues/102.
**Which issue this PR fixes**: fixes https://github.com/kubernetes/kubeadm/issues/102
**Special notes for your reviewer**:
/cc @luxas @dmmcquay
Automatic merge from submit-queue (batch tested with PRs 40574, 40806, 40308, 40771, 39440)
kubeadm: preflight check for incorrect FQDN
**What this PR does / why we need it**: There are a variety of system configuration errors (such as cloud-init bugs when deploying on AWS) which can cause hostname and uname -n to be wrong for a given host. This will cause kubeadm setup to fail in interesting and hard-to-figure-out ways (it doesn't fail until you start trying to set up DNS on the master, for example).
This PR adds a preflight check to test whether or not the server can reach itself using that name. This does not catch the case that the FQDN belongs to a different but valid server, but it would catch some of the cases.
**Which issue this PR fixes** : fixes https://github.com/kubernetes/kubeadm/issues/135
**Special notes for your reviewer**: /cc @luxas
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 40574, 40806, 40308, 40771, 39440)
move api server no kube dep packages
Simple moves, see commit titles. I did not move the source of the generated swagger, I simply change the destination of the script. I'm ok building a little debt to complete the move.
@sttts
Automatic merge from submit-queue
kubeadm: Move some code from apiclient.go to the dedicated apiconfig phase
**What this PR does / why we need it**:
Add constants and somewhat refactor the RBAC code as well + some cleanup.
I'm planning to rewrite the code in `setupmaster.go` later, but this PR has only the move of the code for easier reviewing.
**Special notes for your reviewer**:
This is broken out from: https://github.com/kubernetes/kubernetes/pull/40556
**Release note**:
```release-note
NONE
```
@mikedanese @pires @dmmcquay @dgoodwin
Automatic merge from submit-queue
Use full package path for definition name in OpenAPI spec
We were using short package name (last part of package name) plus type name for OpenAPI spec definition name. That can result in duplicate names and make the spec invalid. To be sure we will always have unique names, we are going to use full package name as definition name. Also "x-kubernetes-tag" custom field is added to definitions to list Group/Version/Kind for the definitions that has it. This will help clients to discover definitions easier.
Lastly, we've added a reference from old definition names to the new ones to keep backward compatibilities. The list of old definitions will not be updated.
**Release note**:
- Rename OpenAPI definition names to type's full package names to prevent duplicates
- Create OpenAPI extension "x-kubernetes-group-version-kind" for definitions to store Group/Version/Kind
- Deprecate old definition names and create a reference to the new definitions. Old definitions will be removed in the next release.
