Switching from IPv4 to IPv6 for Huawei CSI

This section describes how to switch from IPv4 to IPv6 when updating Huawei CSI.

Prerequisites

The host environment and Kubernetes cluster environment support IPv6. For details, see IPv4/IPv6 dual-stack of Kubernetes .
Huawei CSI has been installed and services are running properly.

Run the following command to obtain the original service configuration file. helm-huawei-csi indicates the Helm chart name specified during the installation of the earlier version, and huawei-csi indicates the Helm chart namespace specified during the installation of the earlier version.
```
helm get values helm-huawei-csi -n huawei-csi -a > ./update-values.yaml
```
Run the vi update-values.yaml command to open the file obtained in 1 and modify the service.ipFamilyPolicy and service.ipFamilies configuration items. For details about the parameters, see Table 5 .
The following is an example:
```
service:
  ipFamilyPolicy: SingleStack
  ipFamilies:
    - IPv6
```
Before switching to IPv6, run the following command to delete the service in the huawei-csi namespace.
```
kubectl delete service -n huawei-csi --all
```
Run the following command to upgrade Huawei CSI. In the following command, helm-huawei-csi indicates the specified Helm chart name, huawei-csi indicates the specified Helm chart namespace, and update-values.yaml indicates the file obtained in 1 .
```
helm upgrade helm-huawei-csi ./ -n huawei-csi -f ./values.yaml -f ./update-values.yaml
```
Run the following command to query the ipFamilies parameter of the huawei-csi-controller service after the update.
```
kubectl get svc -n huawei-csi huawei-csi-controller -o=jsonpath='{.spec.ipFamilies}'
```
The expected output is as follows:
```
["IPv6"]
```