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CentOS7安装MySQL

CentOS7安装MySQL

作者: 小嘚瑟l | 来源:发表于2018-08-29 14:29 被阅读0次

    1、先检查系统是否装有mysql

    [root@localhost ~]# rpm -qa | grep mysql

    [root@localhost ~]#(返回空值,说明没有安装)

    2、下载mysql的repo源

    [root@localhost ~]# wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

    3、安装mysql-community-release-el7-5.noarch.rpm包

    [root@localhost ~]# sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm

    安装这个包后,会获得两个mysql的yum repo源:

    /etc/yum.repos.d/mysql-community.repo,

    /etc/yum.repos.d/mysql-community-source.repo。

    可以输入命令查看:

    [root@localhost ~]# cd /etc/yum.repos.d/

    [root@localhost yum.repos.d]# ls

    mysql-community-source.repo  mysql-community.repo

    4、安装mysql

    [root@localhost yum.repos.d]# sudo yum install mysql-server

    Is this ok [y/d/N]: y(遇到选项输入y)

    安装完成后,没有密码,需要重置密码

    安装后再次查看mysql

    [root@localhost yum.repos.d]# rpm -qa | grep mysql

    mysql-community-client-5.6.41-2.el7.x86_64

    mysql-community-common-5.6.41-2.el7.x86_64

    mysql-community-release-el7-5.noarch

    mysql-community-libs-5.6.41-2.el7.x86_64

    mysql-community-server-5.6.41-2.el7.x86_64

    5、重置密码

    重置密码前,首先要登录

    [root@localhost yum.repos.d]# mysql -u root

    ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

    出现此错误:原因是/var/lib/mysql的访问权限问题。

    下面的命令把/var/lib/mysql的拥有者改为当前用户:

    [root@localhost /]# sudo chown -R openscanner:openscanner /var/lib/mysql

    chown: 无效的用户: "openscanner:openscanner"

    更换命令,并用 ll 查看目录权限列表

    [root@localhost /]# chown root /var/lib/mysql/

    重启服务

    [root@localhost /]# service mysqld restart

    登录重置密码

    [root@localhost /]# mysql -u root

    mysql> use mysql;

    mysql> update user set password=password('root') where user='root';

    mysql> exit;

    重启mysql服务器才生效:

    [root@localhost /]# service mysqld restart

    加入以下命令行,为root添加远程连接的能力。链接密码为 root

    mysql> GRANT ALL PRIVILEGES ON *.* TO root@"%" IDENTIFIED BY "root";

    6、开放3306端口号(centos7)

    [root@localhost /]# firewall-cmd --zone=public --add-port=3306/tcp --permanent

    [root@localhost /]# firewall-cmd --reload

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