美文网首页
CentOS7 安装MySQL5.7

CentOS7 安装MySQL5.7

作者: 毛子阿卡西 | 来源:发表于2017-03-31 11:32 被阅读0次

    安装环境:CentOS7 64位 MINI版,安装MySQL5.7

    MySQL官网中下载YUM源rpm安装包:http://dev.mysql.com/downloads/repo/yum/

    # 下载mysql源安装包
    shell> wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
    # 安装mysql源
    shell> yum localinstall mysql57-community-release-el7-8.noarch.rpm
    

    检查mysql源是否安装成功

    shell> yum repolist enabled | grep "mysql.*-community.*"
    

    看到上图所示表示安装成功
    2、安装MySQL

    shell> yum install mysql-community-server
    

    3、启动MySQL服务

    shell> systemctl start mysqld
    

    查看MySQL的启动状态

    shell> systemctl status mysqld
    ● mysqld.service - MySQL Server
       Loaded: loaded (/usr/lib/systemd/system/mysqld.service; disabled; vendor preset: disabled)
       Active: active (running) since 五 2016-06-24 04:37:37 CST; 35min ago
     Main PID: 2888 (mysqld)
       CGroup: /system.slice/mysqld.service
               └─2888 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
    6月 24 04:37:36 localhost.localdomain systemd[1]: Starting MySQL Server...
    6月 24 04:37:37 localhost.localdomain systemd[1]: Started MySQL Server.
    

    4、开机启动

    shell> systemctl enable mysqldshell> systemctl daemon-reload
    

    5、修改root默认密码
    mysql安装完成之后,在/var/log/mysqld.log文件中给root生成了一个默认密码。通过下面的方式找到root默认密码,然后登录mysql进行修改:

    shell> grep 'temporary password' /var/log/mysqld.log
    
    ![](https://img.haomeiwen.com/i5406094/7ae2261a4f7acbf9.jpg?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
    shell> mysql -uroot -pmysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';
    

    或者

    mysql> set password for 'root'@'localhost'=password('MyNewPass4!');
    
    注意:mysql5.7默认安装了密码安全检查插件(validate_password),默认密码检查策略要求密码必须包含:大小写字母、数字和特殊符号,并且长度不能少于8位。否则会提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements错误,如下图所示:

    通过msyql环境变量可以查看密码策略的相关信息:

    mysql> show variables like '%password%';
    

    MySQL官网密码策略详细说明:http://dev.mysql.com/doc/refman/5.7/en/validate-password-options-variables.html#sysvar_validate_password_policy

    修改密码策略

    在/etc/my.cnf文件添加validate_password_policy配置,指定密码策略
    选择0(LOW),1(MEDIUM),2(STRONG)其中一种,选择2需要提供密码字典文件validate_password_policy=0
    

    如果不需要密码策略,添加my.cnf文件中添加如下配置禁用即可:

    validate_password = off
    

    重新启动mysql服务使配置生效:

    systemctl restart mysqld
    

    6、添加远程登录用户
    默认只允许root帐户在本地登录,如果要在其它机器上连接mysql,必须修改root允许远程连接,或者添加一个允许远程连接的帐户,为了安全起见,我添加一个新的帐户:

    mysql> GRANT ALL PRIVILEGES ON *.* TO 'yangxin'@'%' IDENTIFIED BY 'Yangxin0917!' WITH GRANT OPTION;
    

    7、配置默认编码为utf8
    修改/etc/my.cnf配置文件,在[mysqld]下添加编码配置,如下所示:

    [mysqld]character_set_server=utf8init_connect='SET NAMES utf8'
    

    重新启动mysql服务,查看数据库默认编码如下所示:

    默认配置文件路径:

    配置文件:/etc/my.cnf  日志文件:/var/log//var/log/mysqld.log  
    服务启动脚本:/usr/lib/systemd/system/mysqld.service  socket
    文件:/var/run/mysqld/mysqld.pid
    

    相关文章

      网友评论

          本文标题:CentOS7 安装MySQL5.7

          本文链接:https://www.haomeiwen.com/subject/fkomottx.html