MySQL5.7单实例安装及开机启动配置（亲测）

安装环境：

Centos版本：CentOS7.6.1810
Mysql版本：5.7.9

软件目录：/soft

cp /soft/mysql-5.7.9-linux-glibc2.5-x86_64.tar.gz /usr/local/

解压mysql到/usr/local目录

tar -zxvf mysql-5.7.9-linux-glibc2.5-x86_64.tar.gz

安装需要的依赖

yum install -y libaio

具体安装：

shell> groupadd mysql
shell> useradd -r -g mysql mysql
shell> cd /usr/local
shell> tar zxvf /path/to/mysql-VERSION-OS.tar.gz
shell> ln -s full-path-to-mysql-VERSION-OS mysql
shell> cd mysql
shell> mkdir mysql-files
shell> chmod 770 mysql-files
shell> chown -R mysql .
shell> chgrp -R mysql .
shell> bin/mysqld --initialize --user=mysql     # MySQL 5.7.6 and up
shell> bin/mysql_ssl_rsa_setup              # MySQL 5.7.6 and up
shell> chown -R root .
shell> chown -R mysql data mysql-files
shell> bin/mysqld_safe --user=mysql &
# Next command is optional
shell> cp support-files/mysql.server /etc/init.d/mysql.server

配置环境变量：

export PATH=/usr/local/mysql/bin:$PATH

配置开启启动

chkconfig mysql.server on
chkconfig --list

登陆，修改密码

set passWord = ‘root1234%’;

允许远程登陆

GRANT ALL PRIVILEGES ON . TO ‘root’@’%’ IDENTIFIED BY ‘root1234%’

GRANT ALL PRIVILEGES ON . TO ‘root’@’%’ IDENTIFIED BY ‘root1234%’ WITH GRANT OPTION;

flush privileges;

启动的时候可能会报错

这是因为mysql启动的时候需要配置文件，而在安装centos的时候，哪怕是mini版本都会有个默认的配置在/etc目录中。

/usr/local/mysql/bin/mysqld --verbose --help |grep -A 1 ‘Default options’
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf ~/.my.cnf

Mysql启动的时候会以上面所述的顺序加载配置文件

如果报错，先重命名my.cnf文件