mysql 8.4.5 准备
1.创建目录 
mkdir -p /data/wordpress
mkdir -p /data/mysql8/{etc/mysql/conf.d,data,logs,files}
sudo chown -R 999:999 /data/mysql8/data /data/mysql8/logs /data/mysql8/files
sudo chmod -R 755 /data/mysql8/data /data/mysql8/logs /data/mysql8/files

2.创建配置 /data/mysql8/etc/mysql/conf.d/my.cnf 
[mysqld]
user = mysql
secure_file_priv = /var/lib/mysql-files
bind-address = 0.0.0.0
datadir = /var...