使用MySQL community 源安装MySQL
添加MySQL Yum源
安装MySQL
sudo rpm -Uvh mysql57-community-release-el6-n.noarch.rpm
yum localinstall mysql57-community-release-el6-n.noarch.rpm -y # 安装
注：使用yum安装的mysql，会随着系统(yum update)更新而更新
版本选择
查看可供安装的MySQL版本
yum repolist all | grep mysql
配置MySQL源
# 这些貌似不需要配置
# for mysql57-community
cat > /etc/yum.repos.d/mysql-community.repo < EOF
[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/6/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
EOF
# for mysql56-community
cat > /etc/yum.repos.d/mysql-community.repo < EOF
[mysql57-community]
name=MySQL 5.6 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/6/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
EOF
查看可供安装的MySQL版本
yum repolist enabled | grep mysql
install mysql
sudo yum install mysql-community-server -y
start mysql
sudo service mysqld start
sudo service mysqld status # 查看状态
仅对于MySQL 5.7：在服务器的初始启动时，出现以下情况，假定服务器的数据目录为空：
查看root密码：’root’@’localhost’ 超级账户已被创建
sudo grep 'temporary password' /var/log/mysqld.log
修改MySQL密码
ALTER USER ‘root’@’localhost’ IDENTIFIED BY ‘!QAZ2wsx123.’;
这里建议使用强密码，MySQL初始密码设置等级较高，一般密码设置通不过验证
密码示例： ABCabc123!@# !QAZ2wsx123.
MySQL安全初始化(仅适用于MySQL 5.6)
mysql_secure_installation
安装其他MySQL的产品和零件
yum --disablerepo=\* --enablerepo='mysql*-community*' list available
sudo yum install package-name
使用MySQL Yum升级MySQL
选择升级版本
升级
sudo yum update mysql-server
Error
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
set global validate_password_policy=0; # 重新使用alter重设密码即可 (0,1,2)
>
Policy Tests Performed
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
安全设置
set global validate_password_mixed_case_count=2;
查看validate_password插件是否安装(MySQL5.7自带)
mysql> SHOW VARIABLES LIKE 'validate_password%'; +--------------------------------------+-------+
| Variable_name | Value | +--------------------------------------+-------+
| validate_password_check_user_name | OFF |
| validate_password_dictionary_file | | | validate_password_length | 8 | # 密码长度 | validate_password_mixed_case_count | 1 | # 大小写个数，默认为，意思是大小写字符至少分别有一个 | validate_password_number_count | 1 | # 最少数字数量
| validate_password_policy | LOW | # 加密程度(最低)
| validate_password_special_char_count | 1 | # 最少特殊字符数量 +--------------------------------------+-------+
修改mysql 配置文件跳过密码验证
[mysqld]
skip-grant-tables
skip-networking
重启mysqld
/etc/init.d/mysqld restart
change root passwd
update mysql.user set authentication_string=PASSWORD('wQNROtCutvU8yOICpz81') where user='root' and host='localhost';
ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
