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MySQL5.7安装与配置

MySQL5.7安装与配置

作者: 早起早起早起up | 来源:发表于2019-10-11 14:55 被阅读0次

1.# 下载mysql源安装包

shell> wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

2.# 安装mysql源

shell> yum localinstall mysql57-community-release-el7-8.noarch.rpm

3.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。

看到上图所示表示安装成功。

可以修改vim /etc/yum.repos.d/mysql-community.repo源,改变默认安装的mysql版本。比如要安装5.6版本,将5.7源的enabled=1改成enabled=0。然后再将5.6源的enabled=0改成enabled=1即可。改完之后的效果如下所示:

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 mysqld

shell> systemctl daemon-reload

5、修改root本地登录密码

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

shell> mysql -uroot -p

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';

或者

mysql>setpasswordfor'root'@'localhost'=password('MyNewPass4!');

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:

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=utf8

init_connect='SET NAMES utf8'


重启数据库

systemctl restart mysqld.service

systemctl start mysqld.service

systemctl stop mysqld.service

1. GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456'  

                                  这里的123456为你给新增权限用户设置的密码,%代表所有主机,也可以具体到你的主机ip地址

2.flush privileges;这一步一定要做,不然无法成功! 这句表示从mysql数据库的grant表中重新加载权限数据

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