1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
# 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 -y 

# 检查mysql源是否安装成功
yum repolist enabled | grep "mysql.*-community.*"

# 导入密钥
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022

# 安装MySQL
yum install mysql-community-server -y 


# 3、启动MySQL服务
systemctl start mysqld

# 查看MySQL的启动状态
systemctl status mysqld


# 4、开机启动
systemctl enable mysqld
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：

grep 'temporary password' /var/log/mysqld.log

# 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：
# 配置默认编码为utf8
# 关闭客户端dns反解

echo -e "validate_password = off\ncharacter_set_server=utf8\ninit_connect='SET NAMES utf8'\nskip-name-resolve\n" >> /etc/my.cnf 
systemctl restart mysqld 
mysql -uroot -p 


## 授权
alter user 'root'@'localhost' identified by '123123';

grant all privileges on *.* to root@'%' identified by '123123' with grant option;
flush privileges;