Alicloud centos8.0 installing mysql8

install mysql

#  adopt yum install 
yum installl mysql-server
# root Default password 123456

mysql Basic commands

command	effect
mysqld --version	View version number
systemctl start mysqld	start-up mysql
systemctl status mysqld	see mysql Running state

Create user

# create user 'username' @ 'ip' identified by 'password'
# ip by % On behalf of any ip All addresses are accessible . If you need to specify ip Address access , Fill in ip address 
#  The following sentence means : Create account xieruixiang, Set the password to [email protected], whatever ip All addresses are accessible 
create user 'xieruixiang'@'%' identified by '[email protected]';

User authorization

# GRANT 'pemission' ON 'database'.'table' TO 'username'
# permission  jurisdiction  all Represents full authority , optional INSERT,UPDATE,SELECT,DELETE......
# database  On behalf of the authorized database  * Represents all databases 
# table  Data sheet for authorization  * Represents all data sheets 
# username  Represents the account number to be authorized 

# Give the account number xieruixiang Grant full permissions 
GRANT ALL ON *.* TO 'xieruixiang';

# Give the account number xieruixiang Grant search and new permissions 
GRANT SELECT,INSERT ON *.* TO 'xieruixiang';

View Authorization

# SHOW GRANTS FOR 'username'

#  View account number xieruixiang Authorized permissions 
SHOW GRANTS FOR 'xieruixiang';

Cancel Authorization

 # REVOKE 'permission' ON 'database'.'table' FROM 'username'
 # permission  jurisdiction  all Represents full authority , optional INSERT,UPDATE,SELECT,DELETE......
 # database  On behalf of the unauthorized database  * Represents all databases 
# table  Data sheet representing the cancellation of authorization  * Represents all data sheets 
# username  Represents the account number to be cancelled 

#  Cancel account xieruixiang All permissions for 
REVOKE ALL ON *.* FROM 'xieruixiang';

#  Cancel account xieruixiang Query and new permissions for 
REVOKE INSERT,SELECT ON *.* FROM 'xieruixiang';

Refresh the permissions

#  Remember to refresh permissions after authorizing and canceling authorization 
FLUSH PRIVILEGES;

matters needing attention

#  If you want to be able to connect to... On Alibaba cloud servers remotely mysql
#  Please configure Alibaba cloud security groups 3306 port 
#  Please create an account , Assign authorization