Automatic merge from submit-queue (batch tested with PRs 50016, 49583, 49930, 46254, 50337)
[Federation] Make the hpa scale time window configurable
This PR is on top of open pr https://github.com/kubernetes/kubernetes/pull/45993.
Please review only the last commit in this PR.
This adds a config param to controller manager, the value of which gets passed to hpa adapter via sync controller.
This is needed to reduce the overall time limit of the hpa scaling window to much lesser (then the default 2 mins) to get e2e tests run faster. Please see the comment on the newly added parameter.
**Special notes for your reviewer**:
@kubernetes/sig-federation-pr-reviews
@quinton-hoole
@marun to please validate the mechanism used to pass a parameter from cmd line to adapter.
**Release note**:
```
federation-controller-manager gets a new flag --hpa-scale-forbidden-window.
This flag is used to configure the duration used by federation hpa controller to determine if it can move max and/or min replicas
around (or not), of a cluster local hpa object, by comparing current time with the last scaled time of that cluster local hpa.
Lower value will result in faster response to scalibility conditions achieved by cluster local hpas on local replicas, but too low
a value can result in thrashing. Higher values will result in slower response to scalibility conditions on local replicas.
```
Automatic merge from submit-queue
[Federation] Fix Running service controller in federation kubectl tests
Fixes: #42607
cc @nikhiljindal @kubernetes/sig-federation-bugs
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.
Automatic merge from submit-queue
Read the federation controller manager kubeconfig from a filesystem path
This decoupling from the Kubernetes API allows admins to run federation control plane components wherever they like, even outside Kubernetes. This also makes the federation controller manager read its config from one single place in a uniform and/or consistent way, instead of spreading the config around command line flags and secrets.
``` release-note
Federation controller manager can consume the federation API server kubeconfig from a file configured via --kubeconfig flag.
If you are upgrading your Cluster Federation components from v1.4.x, please update your `federation-apiserver` and `federation-controller-manager` manifests to the new version:
```
cc @kubernetes/sig-cluster-federation
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.
