怎么安装360mysql_centos 7怎么安装mysql

满意答案

fdnwg

2017.05.02

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1、配置YUM源

在MySQL官网中下载YUM源rpm安装包&＃xff1a;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&＃61;/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默认密码

mysql安装完成之后&＃xff0c;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&＃xff0c;然后登录mysql进行修改&＃xff1a;

shell> grep &＃39;temporary password&＃39; /var/log/mysqld.log

shell> mysql -uroot -p

mysql> ALTER USER &＃39;root&＃39;&＃64;&＃39;localhost&＃39; IDENTIFIED BY &＃39;MyNewPass4!&＃39;;

或者

mysql> set password for &＃39;root&＃39;&＃64;&＃39;localhost&＃39;&＃61;password(&＃39;MyNewPass4!&＃39;);

注意&＃xff1a;mysql5.7默认安装了密码安全检查插件(validate_password)&＃xff0c;默认密码检查策略要求密码必须包含&＃xff1a;大小写字母、数字和特殊符号&＃xff0c;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&＃xff0c;如下图所示&＃xff1a;

通过msyql环境变量可以查看密码策略的相关信息&＃xff1a;

mysql> show variables like &＃39;%password%&＃39;;

validate_password_policy&＃xff1a;密码策略&＃xff0c;默认为MEDIUM策略 validate_password_dictionary_file&＃xff1a;密码策略文件&＃xff0c;策略为STRONG才需要 validate_password_length&＃xff1a;密码最少长度 validate_password_mixed_case_count&＃xff1a;大小写字符长度&＃xff0c;至少1个 validate_password_number_count &＃xff1a;数字至少1个 validate_password_special_char_count&＃xff1a;特殊字符至少1个 上述参数是默认策略MEDIUM的密码检查规则。

共有以下几种密码策略&＃xff1a;

策略

检查规则

0 or LOW Length

1 or MEDIUM Length; numeric, lowercase/uppercase, and special characters

2 or STRONG Length; numeric, lowercase/uppercase, and special characters; dictionary file

MySQL官网密码策略详细说明&＃xff1a;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&＃xff0c;指定密码策略

# 选择0(LOW)&＃xff0c;1(MEDIUM)&＃xff0c;2(STRONG)其中一种&＃xff0c;选择2需要提供密码字典文件

validate_password_policy&＃61;0

如果不需要密码策略&＃xff0c;添加my.cnf文件中添加如下配置禁用即可&＃xff1a;

validate_password &＃61; off

重新启动mysql服务使配置生效&＃xff1a;

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&＃xff0c;如果要在其它机器上连接mysql&＃xff0c;必须修改root允许远程连接&＃xff0c;或者添加一个允许远程连接的帐户&＃xff0c;为了安全起见&＃xff0c;我添加一个新的帐户&＃xff1a;

mysql> GRANT ALL PRIVILEGES ON *.* TO &＃39;yangxin&＃39;&＃64;&＃39;%&＃39; IDENTIFIED BY &＃39;Yangxin0917!&＃39; WITH GRANT OPTION;

7、配置默认编码为utf8

修改/etc/my.cnf配置文件&＃xff0c;在[mysqld]下添加编码配置&＃xff0c;如下所示&＃xff1a;

[mysqld]

character_set_server&＃61;utf8

init_connect&＃61;&＃39;SET NAMES utf8&＃39;

重新启动mysql服务&＃xff0c;查看数据库默认编码如下所示&＃xff1a;

默认配置文件路径&＃xff1a; 配置文件&＃xff1a;/etc/my.cnf 日志文件&＃xff1a;/var/log//var/log/mysqld.log 服务启动脚本&＃xff1a;/usr/lib/systemd/system/mysqld.service socket文件&＃xff1a;/var/run/mysqld/mysqld.pid

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