Update README.md

README.md

@@ -5,12 +5,50 @@ Apache SkyWalking Kubernetes
 
 To install and configure skywalking in a Kubernetes cluster, follow these instructions.
 
+## Documentation
+#### Deploy SkyWalking and Elasticsearch (default)
+
+```shell script
+$ cd chart
+
+$ helm add stable https://kubernetes-charts.storage.googleapis.com/
+
+$ helm dep up 
+
+$ helm install <release_name> skywalking -n <namespace>
+```
+
+#### Only deploy SkyWalking ,and use existing Elasticsearch
+If not want to deploy a new elasticsearch cluster, this way can be solved.
+
+Only need to close the elasticsearch deployed by chart default and configure the existing elasticsearch connection method.
+
+```shell script
+$ cd chart
+
+$ helm add stable https://kubernetes-charts.storage.googleapis.com/
+
+$ helm dep up 
+
+$ helm install <release_name> skywalking -n <namespace> \
+        --set elasticsearch.enabled=false \
+        --set elasticsearch.config.host=<es_host> \
+        --set elasticsearch.config.port.http=<es_port>
+```
+
 ## Structure of repository
 
 ### helm-chart 
 
 This is recommended as the best practice to deploy SkyWalking backend stack into kubernetes cluster. 
 
+#### release chart table 
+| SkyWalking version | Chart version |
+| ------------------ | ------------- |
+| 6.5.0              | 1.0.0         |
+
+Note:  The source code for the release chart is located in the chart folder in the master branch.
+
 #### old chart position table
 
 | SkyWalking version | Chart position                                               |
@@ -22,9 +60,5 @@ This is recommended as the best practice to deploy SkyWalking backend stack into
 
 Note:  The source code for old charts are in the **legacy-helm-chart** branch.
 
-#### release chart table 
-| SkyWalking version | Chart version |
-| ------------------ | ------------- |
-| 6.5.0              | 1.0.0         |
-
-Note:  The source code for the release chart is located in the chart folder in the master branch.
\ No newline at end of file
+# LICENSE
+Apache 2.0