故障描述：宝塔安装不上

故障分析：yum的问题导致安装失败，更换阿里云yum即可。

处理过程方法：

1.第一步：备份 sources.list

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

2.第二步：编辑 sources.list

sudo vim /etc/apt/sources.list

3.第三步：删除原文件内容，替换下面的阿里源！（i编辑把原来的文本全部删完，然后把下面的全部复制上去，然后：wq）

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

4、更新

sudo apt update

5、升级

sudo apt upgrade

yum换好以后，测试宝塔正常安装。