MySQL高级（账户管理）

默认保存在mysql-user中

• 创建用户

create user ‘zhangsan’@‘localhost’ identified by ‘123456’;
zhangsan登录

• 授权
• 权限：create drop select insert update…

grant select on python_test_1.* to ‘zhangsan’@‘localhost’;
flush privileges;

• 所有权限：

  all privileges;

• 刷新权限

  flush privileges;

• 查询权限 show grants for ‘用户名’@‘主机名’

  show grants for ‘zhangsan’@‘localhost’;

• 修改用户权限

grant select,update on python_test_1.* to ‘zhangsan’@‘localhost’ with grant option;;
flush privileges;

• 修改用户密码

• 知道密码，改新密码

alter user ‘用户名’@‘主机’ identified by ‘新密码’;
alter user ‘zhangsan’@‘localhost’ identified by ‘123’;

• 忘记密码，重置密码

停止服务，设置跳过正常验证，设置密码为空
设置正常验证模式，重启服务，用空密码登录，改成新密码
sudo service mysql stop;
sudo vi /ect/mysql/mysql.conf.d/mysqld.cnf
skip-grant-tables
use mysql
update user set authentication_string=’’ where user=’root’;
sudo vi /ect/mysql/mysql.conf.d/mysqld.cnf #注释
sudo service mysql start;#重启
alter user ‘zhangsan’@‘localhost’ identified by ‘123’; #更新密码
flush privileges;

*远程登录

grand all on . to root’@’%’;
flush privileges;

• 删除用户

drop user ‘lisi’@‘localhost’;

delete from user where user=’’ and host=’’

1、在主服务器上进行备份

mysqldump -uroot -proot --all-databases --lock-all-tables > ~/master_db.sql

2、在windows上进行数据还原

mysql -uroot -proot < master_db.sql

主服务器
1、编辑mysql.conf.d文件，设置log-bin与server-id

sudo vi /etc/mysql/mysql.conf.d/mysql.conf
#追加
log-bin=mysql-bin
binlog_format=mixed
server-id=01

2、重启服务器

sudo service mysql restart

3、登录服务器，创建用户从服务器同步数据使用账号

grant rerication salve on . TO ‘slave’@’%’ identified by ‘salve’;
flush privileges;

4、授权主二进制日志信息

show master status;

从服务器（windows）

1、找到windows的mysql配置文件
2、编辑mysql.conf，

log-bin=mysql-bin
binlog_format=mixed
server-id=02

3、重启服务
4、进入win的mysql，设置连接主服务器

change master to master_host = ‘192.168.121.12’, master_user=’slave’, master_password=’slave’, master_log_file=’mysql-bin.0001’, master_log_ pos=100
5、开启从服务器
start slave;
show slave status G;

看到yes,表示配置成功

Slave_IO_Running:yes
Slave_Sql_Running:yes

测试同步
改变主，从同步