[Linux]Centos7下mysql小白安装教程

一、工具下载

　 mysql下载传送门

SecureCRTSecureFX下载传送门

二、上传安装文件

三、查看上传的mysql安装文件

[[email protected] ~]# ls
anaconda-ks.cfg  MySQL-client-advanced-5.6.22-1.el7.x86_64.rpm  MySQL-server-advanced-5.6.22-1.el7.x86_64.rpm  公共  模板  视频  图片  文档  下载  音乐  桌面

四、安装perl

[[email protected] ~]yum install -y perl-Module-Install.noarch

五、安装libaio

[[email protected] ~]yum install -y libaio libaio-devel

六、修改SELINUX的cfg

[[email protected] ~]vi /etc/selinux/config

修改（按i键后可修改）SELINUX=enforcing为SELINUX=disabled，存盘退出（按Esc键后输入:wq后回车）

七、重启系统

[[email protected] ~]reboot

八、安装server

[[email protected] ~]rpm -ivh MySQL-server-advanced-5.6.22-1.el7.x86_64.rpm

九、安装client

[[email protected] ~]rpm -ivh MySQL-client-advanced-5.6.22-1.el7.x86_64.rpm

十、启动mysql

[[email protected] ~]# service mysql start
Starting MySQL SUCCESS! 

十一、设置root密码

[[email protected] ~]# service mysql stop
[[email protected] ~]# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
[[email protected] ~]# mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD(‘123‘) where USER=‘root‘;
mysql> FLUSH PRIVILEGES;
mysql> quit
[[email protected] ~]# service mysql start
[[email protected] ~]# mysql -u root -p
Enter password: 123

十二、启动mysql时报错

ERROR! MySQL server PID file could not be found!

kill掉所有出来的进程再启动mysql

[[email protected] ~]# ps aux |grep mysq*root      19162  0.0  0.0 113252  1600 pts/1    S    09:24   0:00 /bin/sh /usr/bin/mysqld_safe --user=mysql --skip-grant-tables --skip-networkingmysql     19280  0.1  5.7 1038812 456172 pts/1  Sl   09:24   0:03 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --skip-grant-tables --skip-networking --log-error=/var/lib/mysql/localhost.err --pid-file=/var/lib/mysql/localhost.pidroot      19678  0.0  0.0 112656   980 pts/1    S+   09:55   0:00 grep --color=auto mysq*[[email protected] ~]# kill 19162[[email protected] ~]# kill 19280[[email protected] ~]# kill 19678