Linux 安装配置mysql
1.查看mysql是否安装，如果安装了，卸载mysql
`（1）查看`
[root@CDH01 ~]# rpm -qa|grep mysql
mysql-libs-5.1.73-8.el6_8.x86_64
`（2）卸载`
[root@CDH01 ~]# rpm -e --nodeps mysql-libs-5.1.73-8.el6_8.x86_64
2.压mysql-libs.zip文件到当前目录
// -d 指定解压的目录
// -n 解压缩时不要覆盖原有的文件
[root@CDH01 install]# unzip -n mysql-libs.zip -d /server/install/
3.进入到mysql-libs文件夹下
[root@CDH01 install]# cd mysql-libs/
[root@CDH01 mysql-libs]#
[root@CDH01 mysql-libs]# ll
总用量 76048
-rw-r--r-- 1 root root 18509960 3月 26 2015 MySQL-client-5.6.24-1.el6.x86_64.rpm
-rw-r--r-- 1 root root 3575135 12月 1 2013 mysql-connector-java-5.1.27.tar.gz
-rw-r--r-- 1 root root 55782196 3月 26 2015 MySQL-server-5.6.24-1.el6.x86_64.rpm
4.安装mysql服务端
[root@CDH01 mysql-libs]# rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.
5.查看产生的随机密码
[root@CDH01 mysql-libs]# cat /root/.mysql_secret
# The random password set for the root user at Fri Aug 14 17:10:33 2020 (local time): TVQbdHh_70jQMeYd
6.查看mysql状态（启动）
[root@CDH01 mysql-libs]# service mysql status
MySQL is not running [失败]
[root@CDH01 mysql-libs]# service mysql start
Starting MySQL.. [确定]
7.安装mysql客户端
[root@CDH01 mysql-libs]# rpm -ivh MySQL-client-5.6.24-1.el6.x86_64.rpm
8.链接mysql
[root@CDH01 mysql-libs]# mysql -uroot -pTVQbdHh_70jQMeYd
9.修改密码
mysql> set password=password('123456');
10.配置只要是root用户+密码，在任何主机上都能登录MySQL数据库
mysql>show databases;
mysql>use mysql;
mysql>show tables;
mysql>desc user;
mysql>select User, Host, Password from user;
mysql>update user set host='%' where host='localhost';
mysql>delete from user where Host='cdh01';
mysql>delete from user where Host='127.0.0.1';
mysql>delete from user where Host='::1';
mysql>flush privileges;
mysql>quit;
`设置mysql开机自启`
[root@CDH01 mysql-libs]# /etc/init.d/mysql start
Starting MySQL [确定]
[root@CDH01 mysql-libs]# chkconfig mysql on
[root@CDH01 mysql-libs]# chkconfig --list //查看
mysql 0:关闭 1:关闭 2:启用 3:启用 4:启用 5:启用 6:关闭
注意：别忘了点赞