diff --git a/internal/web/actions/default/clusters/cluster/settings/dns/randomName.go b/internal/web/actions/default/clusters/cluster/settings/dns/randomName.go
new file mode 100644
index 00000000..d35b1035
--- /dev/null
+++ b/internal/web/actions/default/clusters/cluster/settings/dns/randomName.go
@@ -0,0 +1,18 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package dns
+
+import (
+	"github.com/TeaOSLab/EdgeAdmin/internal/web/actions/actionutils"
+	"github.com/iwind/TeaGo/rands"
+)
+
+type RandomNameAction struct {
+	actionutils.ParentAction
+}
+
+func (this *RandomNameAction) RunPost(params struct{}) {
+	this.Data["name"] = "cluster" + rands.HexString(8)
+
+	this.Success()
+}
diff --git a/internal/web/actions/default/clusters/cluster/settings/init.go b/internal/web/actions/default/clusters/cluster/settings/init.go
index 85c98cb2..c58f58bc 100644
--- a/internal/web/actions/default/clusters/cluster/settings/init.go
+++ b/internal/web/actions/default/clusters/cluster/settings/init.go
@@ -39,6 +39,7 @@ func init() {
 			// DNS
 			Prefix("/clusters/cluster/settings/dns").
 			GetPost("", new(dns.IndexAction)).
+			Post("/randomName", new(dns.RandomNameAction)).
 
 			// 消息
 			Prefix("/clusters/cluster/settings/message").
@@ -78,7 +79,6 @@ func init() {
 			// WebP
 			Prefix("/clusters/cluster/settings/webp").
 			GetPost("", new(webp.IndexAction)).
-
 			EndAll()
 	})
 }
diff --git a/web/views/@default/clusters/cluster/settings/dns/index.html b/web/views/@default/clusters/cluster/settings/dns/index.html
index 6afba29e..14e95c50 100644
--- a/web/views/@default/clusters/cluster/settings/dns/index.html
+++ b/web/views/@default/clusters/cluster/settings/dns/index.html
@@ -20,11 +20,11 @@
 				<td class="title">DNS子域名 *</td>
 				<td>
 					<div class="ui input right labeled">
-						<input type="text" name="dnsName" maxlength="64" style="width:10em" v-model="dnsName"/>
+						<input type="text" name="dnsName" maxlength="64" style="width:12em" v-model="dnsName"/>
                         <span class="ui label" v-if="domain != null && domain.name != null && domain.name.length > 0">.{{domain.name}}</span>
                         <span class="ui label" v-else>.主域名</span>
 					</div>
-					<p class="comment">当前集群的子域名，和主域名一起组成集群节点的子域名。</p>
+					<p class="comment">当前集群的子域名，和主域名一起组成集群节点的子域名。<a href="" @click.prevent="generateRandName()">[随机生成]</a>。</p>
 				</td>
 			</tr>
             <tr>
diff --git a/web/views/@default/clusters/cluster/settings/dns/index.js b/web/views/@default/clusters/cluster/settings/dns/index.js
index ea3086ee..3efea6fa 100644
--- a/web/views/@default/clusters/cluster/settings/dns/index.js
+++ b/web/views/@default/clusters/cluster/settings/dns/index.js
@@ -10,4 +10,11 @@ Tea.context(function () {
 	this.addCnameRecord = function (name) {
 		this.$refs.cnameRecords.addValue(name)
 	}
+
+	this.generateRandName = function () {
+		this.$post(".randomName")
+			.success(function (resp) {
+				this.dnsName = resp.data.name
+			})
+	}
 })
\ No newline at end of file