Automatic merge from submit-queue
error strings should not end with punctuation
**What this PR does / why we need it**:
Delete the end punctuation of error strings
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
https://github.com/golang/go/wiki/CodeReviewComments#error-strings
**Release note**:
```release-note
```
Signed-off-by: yupeng <yu.peng36@zte.com.cn>
Automatic merge from submit-queue (batch tested with PRs 38212, 38792, 39641, 36390, 39005)
Updating federated service controller to support cascading deletion
Ref https://github.com/kubernetes/kubernetes/issues/33612
Service controller is special than other federation controllers because it does not use federatedinformer and updater to sync services (it was written before we had those frameworks).
Updating service controller code to instantiate these frameworks and then use deletion helper to perform cascading deletion.
Note that, I havent changed the queuing logic in this PR so we still dont use federated informer to manage the queue. Will do that in the next PR.
cc @kubernetes/sig-federation-misc @mwielgus @quinton-hoole
```release-note
federation: Adding support for DeleteOptions.OrphanDependents for federated services. Setting it to false while deleting a federated service also deletes the corresponding services from all registered clusters.
```
Automatic merge from submit-queue
Fix typo for federation/*
**What this PR does / why we need it**:
Increase code readability for this new member in v1.5
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
**Special notes for your reviewer**:
Could we develop a typo-fix bot along with a k8s terminology dictionary ?
**Release note**:
```release-note
```
Automatic merge from submit-queue
Add CoreDNS as Federation DNS provider
This PR contains following
1. DNS provider implementation for CoreDNS with etcd as backend
2. Script for optionally deploying CoreDNS in federation control plane
Still to do:
1. HA for CoreDNS service need to be handled, would be taken up in subsequent PR
2. Need to configure CoreDNS as fallback DNS to in-cluster KubeDNS(Manual Step). Need to consider automation.
Request for review: @quinton-hoole @madhusudancs @nikhiljindal @kshafiee @deepak-vij
cc @kubernetes/sig-cluster-federation
Automatic merge from submit-queue
Fix package aliases to follow golang convention
Some package aliases are not not align with golang convention https://blog.golang.org/package-names. This PR fixes them. Also adds a verify script and presubmit checks.
Fixes#35070.
cc/ @timstclair @Random-Liu
Automatic merge from submit-queue
Stop deleting underlying services when federation service is deleted
Fixes https://github.com/kubernetes/kubernetes/issues/36799
Fixing federation service controller to not delete services from underlying clusters when federated service is deleted.
None of the federation controller should do this unless explicitly asked by the user using DeleteOptions. This is the only federation controller that does that.
cc @kubernetes/sig-cluster-federation @madhusudancs
```release-note
federation service controller: stop deleting services from underlying clusters when federated service is deleted.
```
If we have a public & private zone with the same name (which is common
on AWS), this means we can still create records. Also tighten up some
of the logic to allow for zones with duplicate names.
We can put subdomains into hosted zones (for example,
foo.federation.example.com can be hosted in example.com)
By allowing sharing a common hosted zone, this means the user doesn't
have to do as much setup.
Automatic merge from submit-queue
Update federation controllers to use release 1.5 clientset
This PR is based on #32243, we won't merge it until next week, to make cherry-picks easier.
Automatic merge from submit-queue
Fix goroutine leak in federation service controller
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**What this PR does / why we need it**: Fixes a memory leak
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#33186
**Special notes for your reviewer**: Every second new goroutines are created and are getting blocked waiting for the lock in the event queue. only one worker will get a lock when there are some events to process, so all the goroutines which are created every second waits for the lock forever and causes the memory/goroutine leak.
As a fix the new worker will be created only when there is no worker exist. and only one worker per cluster either waits for the event or processes all the events and goes out of existence.
```release-note
Fixes memory/goroutine leak in Federation Service controller.
```
