Merge pull request #22236 from jiaj12/patch-26

Update create-external-load-balancer.md

Author: k8s-ci-robot

content/zh/docs/tasks/access-application-cluster/create-external-load-balancer.md

@@ -190,13 +190,16 @@ traffic spreading.
 
 <!--
 * `service.spec.healthCheckNodePort` - specifies the health check nodePort
-(numeric port number) for the service. If not specified, `healthCheckNodePort` is
-created by the service API backend with the allocated `nodePort`. It will use the
-user-specified `nodePort` value if specified by the client. It only has an
+(numeric port number) for the service. If `healthCheckNodePort` isn't specified,
+the service controller allocates a port from your cluster's NodePort range. You
+can configure that range by setting an API server command line option,
+`--service-node-port-range`. It will use the
+user-specified `healthCheckNodePort` value if specified by the client. It only has an
 effect when `type` is set to LoadBalancer and `externalTrafficPolicy` is set
 to Local.
 -->
-* `service.spec.healthCheckNodePort` - 指定服务的 healthcheck nodePort（数字端口号）。如果未指定，则 serviceCheckNodePort 由服务 API 后端使用已分配的 nodePort 创建。如果客户端指定，它将使用客户端指定的 nodePort 值。仅当 type 设置为 LoadBalancer 并且 externalTrafficPolicy 设置为 Local 时才生效。
+
+* `service.spec.healthCheckNodePort` - 指定服务的 healthcheck nodePort（数字端口号）。如果未指定 `healthCheckNodePort`，服务控制器从集群的 NodePort 范围内分配一个端口。您可以通过设置 API 服务器的命令行选项 `--service-node-port-range` 来配置上述范围。它将会使用用户指定的 `healthCheckNodePort` 值（如果被客户端指定）。仅当 `type`  设置为 LoadBalancer 并且  `externalTrafficPolicy` 设置为 Local 时才生效。
 
 <!--
 Setting `externalTrafficPolicy` to Local in the Service configuration file