#mysql的依赖
yum -y install ncurses ncurses-devel libaio-devel openssl openssl-devel

#创建目录
mkdir -p /app/tools/mysql/
mkdir -p /app/data/3306/

#解压压缩包并指定目录
tar xf mysql-8.0.28-linux-glibc2.12-x86_64.tar.xz -C /app/tools/

#创建软连接
ln -s /app/tools/mysql-8.0.28-linux-glibc2.12-x86_64/ /app/tools/mysql

#配置mysql的PATH
echo ‘export PATH=/app/tools/mysql/bin/:$PATH’ >>/etc/profile

#刷新
source /etc/profile

#书写文件my.cnf
vim /etc/my.cnf

#内容：
by oldboy weixin:oldboy0102
[mysqld]
用户
user=mysql
安装目录
basedir=/app/tools/mysql/
数据库目录
datadir=/app/data/3306/
port=3306
socket=/tmp/mysql.sock
[client]
socket=/tmp/mysql.sock

#删除3306目录下的所有文件
rm -rf /app/data/3306/*

#初始化设置
mysqld –initialize-insecure –user=mysql –basedir=/app/tools/mysql/ –datadir=/app/data/3306/

#检查
echo $?