操作对象：

线上和测试所有MySQL Plus数据库

创建用户：

create user 'testname'@'%' identified by '123456';

查看testname用户的权限

show grants for testname;

testname用户授权：

GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, PROCESS, REFERENCES, INDEX,ALTER,SHOW DATABASES, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, EVENT, TRIGGER ON *.* TO 'testnam'@'%';

#创建用户并授权

GRANT ALL PRIVILEGES ON *.* TO 'testname'@'%'IDENTIFIED BY '123456' WITH GRANT OPTION;

testname用户原有权限：

SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, PROCESS, REFERENCES, INDEX,ALTER,SHOW DATABASES, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, EVENT, TRIGGER

查看用户的授权权限：

select * from mysql.user where User='testname' and Host='%'\G;

修改用户的授权权限：

update mysql.user set Grant_priv='Y' where User='testname' and Host='%';

flush privileges;

回收权限：

CREATE,DROP,ALTER

revoke CREATE,DROP,ALTER on *.* from testname@'%';

线上授权testname1：

GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, PROCESS, REFERENCES, INDEX, ALTER, SHOW DATABASES, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, EVENT, TRIGGER ON *.* TO 'testname1'@'%';

mysqladmin -u testname1 -h2.1.1.1 password C123456 "c123456"

修改密码：

set password = password 'C123456';