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Merge pull request #55366 from Lion-Wei/ipvs-readme 

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

update ipvs readme file

Add the way to choose ipvs mode when using kubeadm with a configuration file

**Release note**:
```release-note
NONE
```
pull/6/head
Kubernetes Submit Queue 2017-11-08 23:47:05 -08:00 committed by GitHub
parent 6e01976be1 a05cc0fb9d
commit 0d088609b3
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pkg/proxy/ipvs/README.md
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@ -47,6 +47,18 @@ kubeadm init --feature-gates=SupportIPVSProxyMode=true
to specify the ipvs mode before deploying the cluster if want to run kube-proxy in ipvs mode.
If you are using kubeadm with a configuration file, you can specify the ipvs mode adding `SupportIPVSProxyMode: true` below the `featureGates` field.
Then the configuration file is similar to:
```json
kind: MasterConfiguration
apiVersion: kubeadm.k8s.io/v1alpha1
...
featureGates:
SupportIPVSProxyMode: true
...
```
#### Test
Use `ipvsadm` tool to test whether the kube-proxy start succeed. By default we may get result like: