Linux Mysql 安装

解压放入你想安装的目录，然后移动并改名

tar -zxvf mysql-5.7.37-linux-glibc2.12-x86_64.tar.gz

  mv -v mysql-5.7.37-linux-glibc2.12-x86_64 /usr/local/mysql

 再创建用户和用户组

groupadd mysql
useradd -r -g mysql mysql

将安装目录所有者及所属组改为mysql 

chown -R mysql.mysql /usr/local/mysql

在mysql目录下创建data文件夹

#mkdir data 

初始化数据库

yum -y install numactl

yum search libaio

yum install libaio

 

/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize

 

完成初始化后编辑配置文件 /etc/my.cnf

[mysqld]
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
socket=/tmp/mysql.sock
user=mysql
port=3306
character-set-server=utf8
# 取消密码验证
skip-grant-tables
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# skip-grant-tables
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

将mysql加入到服务

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

开机启动

chkconfig mysql on

启动mysql

service mysql start

设置mysql密码（因为在配置文件取消了密码验证，可以直接回车键）

#mysql -u root -p
或者#/usr/local/mysql/bin/mysql -uroot -p
使用第二个命令是没有配置环境变量

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

　use mysql;
　update user set authentication_string=password('123456') where user='root';
　或者#set password=password("root");
　flush privileges;

  ALTER USER USER() IDENTIFIED BY '123456';

　exit;

设置可以远程连接

mysql -u root -p
use mysql;
update user set host='%' where user = 'root';
flush privileges;

exit;