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;
