add upgrade doc

Signed-off-by: pixiake <[email protected]>

README.md

@@ -100,3 +100,21 @@ kubectl edit cc ks-installer -n kubesphere-system
 ```bash
 kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f
 ```
+
+## Upgrade
+
+1. Download the Yaml file as follows:
+
+```bash
+wget https://raw.githubusercontent.com/kubesphere/ks-installer/v3.0.0/deploy/kubesphere-installer.yaml
+wget https://raw.githubusercontent.com/kubesphere/ks-installer/v3.0.0/deploy/cluster-configuration.yaml
+```
+
+2. Sync the changes from the v2.1.1 to v3.0.0 in the config section of `cluster-configuration.yaml`, note the storage class and the pluggable components need to be consistent with the v2.1.1:
+
+```bash
+kubectl apply -f kubesphere-installer.yaml
+kubectl apply -f cluster-configuration.yaml
+```
+
+> Note: If your KubeSphere version is v2.1.0 or eariler, please upgrade to v2.1.1 first.

README_zh.md

@@ -97,3 +97,20 @@ kubectl edit cc ks-installer -n kubesphere-system
 ```bash
 kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f
 ```
+## 升级
+
+1. 下载v3.0.0部署文件:
+
+```bash
+wget https://raw.githubusercontent.com/kubesphere/ks-installer/v3.0.0/deploy/kubesphere-installer.yaml
+wget https://raw.githubusercontent.com/kubesphere/ks-installer/v3.0.0/deploy/cluster-configuration.yaml
+```
+
+2. 同步v2.1.1配置到`cluster-configuration.yaml`中, 持久化存储及可插拔组件相关配置要与v2.1.1中配置保持一致:
+
+```bash
+kubectl apply -f kubesphere-installer.yaml
+kubectl apply -f cluster-configuration.yaml
+```
+
+> 注意: 如果当前集群中部署的KubeSphere版本是v2.1.0或更早的版本，请先升级到v2.1.1.