1. 下载mysql
2.解压初始化
修改配置文件：
[root@localhost bin]# cat /etc/my.cnf
[mysqld]
#skip-grant-tables
datadir=/usr/local/mysql/data
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
---------------------------------------------------------
赋权
chown -R mysql:mysql data
初始化
mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
添加启动服务
[root@localhost mysql]# cp support-files/mysql.server /etc/init.d/mysql
[root@localhost mysql]# service mysql start
修改密码（最新版本）
SET PASSWORD FOR 'root'@'localhost' = 'password';
mysql> update mysql.user set authentication_string=password('*******') where user='*******'; #修改密码成功
Query OK, 1row affected,1warning (0.00 sec)
Rows matched: 1Changed:1Warnings:1mysql> flush privileges; #立即生效
Query OK, 0rows affected (0.00 sec)
mysql> quit
Bye
重启后修改my.cnf中的无密码登录配置
再重启。
mysql -uroot -p
show databases;--若失败，提示reset password
则：
1、修改密码
mysql> set password=password("youpassword");
2、刷新权限
mysql> flush privileges;
