diff --git a/example/config.yml b/example/config.yml
index 024bd85..d330ca9 100644
--- a/example/config.yml
+++ b/example/config.yml
@@ -34,9 +34,13 @@ K8S_VER: "__k8s_ver__"
 K8S_NODENAME: "{%- if k8s_nodename != '' -%} \
                     {{ k8s_nodename|replace('_', '-')|lower }} \
                {%- else -%} \
-                    {{ inventory_hostname }} \
+                    {{ inventory_hostname|replace('.', '-') }} \
                {%- endif -%}"
 
+# use 'K8S_NODENAME' to set hostname
+ENABLE_SETTING_HOSTNAME: true
+
+
 ############################
 # role:etcd
 ############################
diff --git a/ezdown b/ezdown
index 0399499..f504f25 100755
--- a/ezdown
+++ b/ezdown
@@ -93,6 +93,7 @@ available OSes:
     ubuntu_18         to download package of Ubuntu 18.04
     ubuntu_20         to download package of Ubuntu 20.04
     ubuntu_22         to download package of Ubuntu 22.04
+    ubuntu_24         to download package of Ubuntu 24.04
 examples:
     ./ezdown -P ubuntu_22
 EOF
diff --git a/roles/prepare/tasks/main.yml b/roles/prepare/tasks/main.yml
index c6cd7e0..ee8053d 100644
--- a/roles/prepare/tasks/main.yml
+++ b/roles/prepare/tasks/main.yml
@@ -42,6 +42,13 @@
     regexp: 'easzlab.io.local'
     line: "{{ ansible_env.SSH_CLIENT.split(' ')[0] }}    easzlab.io.local"
 
+# 设置节点hostname，calico 网络组件要求每个节点不一样的hostname
+- name: 设置节点 hostname
+  hostname:
+    name: "{{ K8S_NODENAME }}"
+    use: systemd
+  when: "ENABLE_SETTING_HOSTNAME|bool"
+
 # 设置节点名称{{ K8S_NODENAME }} /etc/hosts 解析
 # 1.先确保第一个主节点做好解析
 - name: 设置 k8s_nodename 在 master[0] 节点 /etc/hosts 地址解析