xdu-chenrj commented on code in PR #16673:
URL: 
https://github.com/apache/dolphinscheduler/pull/16673#discussion_r1805929879


##########
docs/docs/en/guide/installation/cluster.md:
##########
@@ -8,6 +8,70 @@ If you are a new hand and want to experience DolphinScheduler 
functions, we reco
 
 Cluster deployment uses the same scripts and configuration files as 
[pseudo-cluster deployment](pseudo-cluster.md), so the preparation and 
deployment steps are the same as pseudo-cluster deployment. The difference is 
that pseudo-cluster deployment is for one machine, while cluster deployment 
(Cluster) is for multiple machines. And steps of "Modify Configuration" are 
quite different between pseudo-cluster deployment and cluster deployment.
 
+## Enable SSL (optional)
+
+In cluster deployment, you can enable SSL authentication. Secure Sockets 
Layer, SSL, abbreviated as SSL, is a secure protocol that encrypts transmitted 
data to ensure that information is not eavesdropped or tampered with during 
transmission. In addition, it can authenticate servers and ensure data 
integrity.

Review Comment:
   ok



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