1.安装：请参考http://docs.bt.cn/443922
2.dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem. E: _cache->open() failed, please report.
sudo dpkg --configure -a
3.安装时出现psutil installation failed.错误
cent os：
1. yum clean all
2. yum makecache
3. yum -y install gcc
debian将yum换为apt-get即可
4.Your server is running PHP version 5.4.45 but WordPress 5.2 requires at least 5.6.20.
php版本过低，安装高版本
个人原博客地址：http://qtbk.xyz/?p=100