# 安装相关软件

yum install -y gcc gcc-c++ openssl openssl-devel ncurses ncurses-devel make cmake

# 获取MySQL源码，MySQL版本下载链接:https://dev.mysql.com/downloads/mysql/

wget https://dev.mysql.com/get/Downloads/MySQL-8.0/mysql-8.0.13.tar.gz

tar zxvf mysql-8.0.13.tar.gz

cd mysql-8.0.13

# 添加操作系统的MySQL用户

groupadd -r mysql

mkdir -p /data/mysql/data

chown -R mysql.mysql /data/mysql/data/

# 添加配置文件目录

mkdir -p /etc/mysql

chown -R mysql.mysql /etc/mysql

# 编译MySQL

mkdir -p /data/mysql

chown -R mysql.mysql /data/mysql

# -DCMAKE_INSTALL_PREFIX：指定安装目录

# -DMYSQL_DATADIR：数据文件存放位置

# -DSYSCONFDIR：配置文件目录

# -DDOWNLOAD_BOOST：实时下载boost

# -DWITH_BOOST:下载boost保存目录

cmake . -DCMAKE_INSTALL_PREFIX=/data/mysql -DMYSQL_DATADIR=/data/mysql/data -DSYSCONFDIR=/etc/mysql -DDOWNLOAD_BOOST=1 -DWITH_BOOST=/data/mysql/boost

make

make install

# 对安装录更改用户权限

chown root.mysql -R /data/mysql/

# 安装完成后，进入安装目录中，对mysql进行初始化操作

cd /data/mysql

bin/mysqld --initialize

# 拷贝服务脚本，赋权限并添加到启动列表中

cp support-files/mysql.server /etc/rc.d/init.d/mysqld

chmod +x /etc/rc.d/init.d/mysqld

chkconfig --add mysqld

# 修改配置文件

vi /etc/mysql/my.cnf

输入:

[mysqld]

basedir = /data/mysql

datadir = /data/mysql/data

port = 3306

server_id = 1

socket = /tmp/mysql.sock

user = mysql

[client]

port = 3306

socket = /tmp/mysql.sock

# 启动服务

bin/mysqld &

至此MySQL已经安装完成了，接下来是一些优化的操作

# 配置环境变量

echo "export PATH=/data/mysql/bin:$PATH" >/etc/profile.d/mysql.sh

source /etc/profile.d/mysql.sh

# 删除系统安装完成后产生的匿名用户并给root设置密码

# 若登录mysql时，忘记了用户密码可以在启动mysqld服务时加--skip-grant-tables即可直接登录： mysqld --skip-grant-tables &

# 登录mysql

mysql -uroot -hlocalhost -p

# 删除所有匿名用户，以下是删除的命令

drop user 'username'@'localhost';

# 给用户设定密码的两种方式

1. UPDATE user SET password = PASSWORD('your_password') WHERE user = 'username';

FLUSH PRIVILEGES;

2. SET PASSWORD FOR root@localhost = PASSWORD('your_password');

# 创建用户并授权用户

create user 'username'@'localhost' identified by 'your_password';

create database database_name default character set = 'utf8' default collate = 'utf8_general_ci';

grant all privileges on database_name.* to 'username'@'localhost';

flush privileges;