diff --git a/scripts/k8s-ubuntu-init.sh b/scripts/k8s-ubuntu-init.sh
index 9d21d31..291d004 100644
--- a/scripts/k8s-ubuntu-init.sh
+++ b/scripts/k8s-ubuntu-init.sh
@@ -66,6 +66,7 @@ system_init() {
     log "INFO" "开始系统初始化"
 
     # 1. 配置阿里云APT源（加速国内下载）
+    systemctl disable --now unattended-upgrades #特别重要，关闭自动更新，否则导致安装失败。
     local codename=$(lsb_release -cs)  # 自动获取版本代号（如22.04=jammy）
     log "INFO" "配置阿里云APT源（适配Ubuntu $codename）"
     mv /etc/apt/sources.list "/etc/apt/sources.list.bak.$(date +%Y%m%d)"  # 备份原配置