故障原因：
- Debian安装软件过程中会使用美国源 security.debian.org。浪潮云连接这个节点网速巨慢。（10K/S以内）
解决方案：
- 修改源文件 /etc/apt/source.list
- Debian7
-
deb http://mirrors.163.com/debian/ wheezy main non-free contrib deb http://mirrors.163.com/debian/ wheezy-updates main non-free contrib deb http://mirrors.163.com/debian/ wheezy-backports main non-free contrib deb-src http://mirrors.163.com/debian/ wheezy main non-free contrib deb-src http://mirrors.163.com/debian/ wheezy-updates main non-free contrib deb-src http://mirrors.163.com/debian/ wheezy-backports main non-free contrib deb http://mirrors.163.com/debian-security/ wheezy/updates main non-free contrib deb-src http://mirrors.163.com/debian-security/ wheezy/updates main non-free contrib
- Debian8
-
deb http://mirrors.163.com/debian/ jessie main non-free contrib deb http://mirrors.163.com/debian/ jessie-updates main non-free contrib deb http://mirrors.163.com/debian/ jessie-backports main non-free contrib deb-src http://mirrors.163.com/debian/ jessie main non-free contrib deb-src http://mirrors.163.com/debian/ jessie-updates main non-free contrib deb-src http://mirrors.163.com/debian/ jessie-backports main non-free contrib deb http://mirrors.163.com/debian-security/ jessie/updates main non-free contrib deb-src http://mirrors.163.com/debian-security/ jessie/updates main non-free contrib
- 修改后再执行 apt-get update 更新下。速度即可正常。
注：本文同样适用于国内UCloud&其他主机商。
