https://blog.csdn.net/weixin_34315189/article/details/86464734
关注点：
获取初始密码，重新设置密码
# cat /var/log/mysqld.log|grep 'temporary password'
mysql -uroot -p'uCdpitfUi4%H' ，如果有异常，用“”
- 检测系统是否已安装 mysql
[[email protected] ~]# yum list installed | grep mysql - 删除系统已安装的 mysql 及其依赖
[[email protected] ~]# yum -y remove mysql-libs.i686 - 给CentOS添加rpm源
wget http://repo.mysql.com//mysql-community-release-el6-5.noarch.rpm
4.安装yum源
[[email protected] ~]# yum install mysql-community-release-el6-5.noarch.rpm
[[email protected] ~]# yum repolist all | grep mysql
[[email protected] ~]# yum repolist all | grep mysql
[[email protected] ~]# yum-config-manager --disable mysql55-community
[[email protected] ~]# yum-config-manager --disable mysql56-community
[[email protected] ~]# yum-config-manager --enable mysql57-community-dmr - 安装 MySQL 服务端
[[email protected] ~]#yum install mysql-community-server
Dependency Installed:
mysql-community-client.x86_64 0:5.7.22-1.el6
mysql-community-common.x86_64 0:5.7.22-1.el6
mysql-community-libs.x86_64 0:5.7.22-1.el6
Complete!
看到以上结束语句，表示安装成功
- 启动 mysql 服务
[[email protected] ~]# service mysqld start
查看启动是否成功：
[[email protected] ~]# service mysqld status
mysqld (pid 10698) 正在运行... - 修改 root 初始密码
我这里用的是安全模式下进入设置密码
[[email protected] ~]#service mysqld stop
[[email protected] ~]#mysqld_safe –skip-grant-tables &
重新开一个终端输入一下命令，然后直接敲enterj键：
[[email protected] ~]#mysql -uroot -p
进入之后，敲use mysql,用mysql数据库;
修改root用户密码
mysql> update user set authentication_string=password(123456) where user='root';
注：mysql5.7的密码字段是authentication_string，不是password
刷新权限并退出
mysql> >flush privileges;
mysql> >quit
重启mysql，用密码123456即可登录mysql
[[email protected] ~]# service mysqld restart
[[email protected] ~]# mysql -u root -p
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
出现以上内容，登录成功
- 设置mysql开机启动
[[email protected] ~]# chkconfig mysqld on
[[email protected] ~]# chkconfig mysqld status