7mysql的配置和安装

Posted 2020-10-28 sunnyangzs

1. linux环境下mysql的安装
1. sudo yum install mysql-server
2. 修改配置文件
1. vim /etc/my.cnf
1. 添加default-character-set = utf8
3. 设置mysql随系统自动启动
1.  
2. 检查设置是否正确
1. sudo chkconfig --list mysqld
1. mysqld          0:off   1:off   2:on    3:on    4:on    5:on    6:off
   
2. 2-5都是启动则ok
4. 启动mysql
1. sudo service mysqld start
1. 如果出现错误 MySQL Daemon failed to start. 请参考
1. http://blog.csdn.net/u012286517/article/details/50436740


2. 删除匿名用户
1. select user,host from mysql.user;
1. +------+--------------------+
2. | user | host |
3. +------+--------------------+
4. | root | 127.0.0.1 |
5. | | localhost |
6. | root | localhost |
7. | | vm\_24\_26\_centos |
8. | root | vm\_24\_26\_centos |
9. +------+--------------------+
2. delete from mysql.user where user=‘‘;
3. 刷新一下权限
1. flush privileges;
4. 在防火墙下面开放3306端口,开放给外网
1. sudo vim /etc/sysconfig/iptables
1. #mysql port
2.   -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
2. 重启防火墙
1.  service iptables restart
   
5. 重新登录mysql
1. mysql -u root 
6. 创建一个非root权限的账户，避免使用root
1. insert into mysql.user(Host,User,Password)values("localhost","mmall",password("mmall"));
2. 检查插入是否正确
1. select user,host from mysql.user;
1. +-------+--------------------+
2. | user | host |
3. +-------+--------------------+
4. | root | 127.0.0.1 |
5. | mmall | localhost |
6. | root | localhost |
7. | root | vm\_24\_26\_centos |
8. +-------+--------------------+
7. 创建一个数据库
1. create database `mmall` default character set utf8 collate utf8_general_ci;
8. 查看权限
1. select * from mysql.user \G
9. 赋予权限
1. 切换数据库 use mmall;
2. grant all privileges on mmall.* to mmall@‘%‘ identified by ‘mmall‘ with grant option;
1. 注意，此语句可能有错误，导致执行下面的权限查询的时候出现授权不起作用的现象，可以改为下面的授权语句。
1. grant all privileges on *.* to [email protected]‘%‘ identified by ‘mmall‘ with grant option;
2. 请参看
1. https://bbs.csdn.net/topics/330154879
   
3. 可以更细化权限为
1. grant select,delete,create on mmall.* to [email protected]‘%‘ identified by ‘mmall‘ with grant option;
10. 重新查看全新
1. 1. select * from mysql.user \G
   
   
   
   
11. 修改root账号的密码
1. set password for [email protected]=password(‘root‘);
2. set password for [email protected]=password(‘root‘);
   
3. select user,host,password from mysql.user;
12. 退出重新登录
1. 使用密码登录，否则没有权限
5. win下安装mysql    
1. 略

来自为知笔记(Wiz)