步骤一、检查下linux是不是已经安装了MySQL

# rpm -qa|grep mysql

mysql-libs-5.1.71-1.el6.x86_64

# rpm -e --nodeps mysql-libs-5.1.71-1.el6.x86_64 //卸载

# find / -name mysql//有mysql文件夹的话，把mysql的文件夹删掉

步骤二、下载需要的安装包，下载地址：

https://dev.mysql.com/downloads/mysql/5.6.html#downloads

步骤三、将下载的文件进行解压：

# tar -xvf MySQL-5.6.41-1.el6.x86_64.rpm-bundle.tar

MySQL-client-5.6.41-1.el6.x86_64.rpm

MySQL-shared-compat-5.6.41-1.el6.x86_64.rpm

MySQL-test-5.6.41-1.el6.x86_64.rpm

MySQL-server-5.6.41-1.el6.x86_64.rpm

MySQL-devel-5.6.41-1.el6.x86_64.rpm

MySQL-shared-5.6.41-1.el6.x86_64.rpm

MySQL-embedded-5.6.41-1.el6.x86_64.rpm

步骤四、按顺序依次安装：

rpm -ivh MySQL-devel-5.6.41-1.el6.x86_64.rpm

rpm -ivh MySQL-server-5.6.41-1.el6.x86_64.rpm

rpm -ivh MySQL-client-5.6.41-1.el6.x86_64.rpm

没有ERROR日志，说明安装成功；

步骤五、启动mysql

# service mysql start

Starting MySQL.Logging to ‘/var/lib/mysql/C5-3_SOA23.cnpc.com.cn.err‘.

[ OK ]

步骤六、查看默认密码

# cat /root/.mysql_secret

步骤七、登录

# mysql -u root -p

遇到的问题：

1、登录时，报错

# mysql -uroot -p

mysql: unknown variable ‘sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES‘

解决方式：

# vi /etc/my.cnf

把 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES 这句话注释掉；

2、要使用sql语句，必须重设password

mysql> use mysql

ERROR 1820 (HY000): You must SET PASSWORD before executing this statement

解决方式：

mysql> SET PASSWORD = PASSWORD(‘123456‘);//123456是新密码

3、设置远程登录：

mysql> GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘123456‘ WITH GRANT OPTION;

mysql> flush privileges;