1、配置YUM源
在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 wget http://dev.MysqL.com/get/MysqL57-community-release-el7-8.noarch.rpm # 安装MysqL源 yum localinstall MysqL57-community-release-el7-8.noarch.rpm
检查MysqL源是否安装成功
yum repolist enabled | grep "MysqL.*-community.*"
看到上图所示表示安装成功
2、安装MysqL
yum install MysqL-community-server
3、启动MysqL服务
systemctl start MysqLd
查看MysqL的启动状态
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
systemctl enable MysqLd 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:
grep 'temporary password' /var/log/MysqLd.log
MysqL -u root -p MysqL> 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%';
validate_password_policy:密码策略,默认为MEDIUM策略 validate_password_dictionary_file:密码策略文件,策略为STRONG才需要 validate_password_length:密码最少长度 validate_password_mixed_case_count:大小写字符长度,至少1个 validate_password_number_count :数字至少1个 validate_password_special_char_count: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。@H_404_61@
共有以下几种密码策略:
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,and special characters; dictionary file |
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=utf8 init_connect='SET NAMES utf8'
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
原文链接:https://www.f2er.com/centos/376696.html