mysql config

[root@www ~]# yum -y install mysql-server
[root@www ~]# systemctl start mysqld.service 
[root@www ~]# systemctl enable mysqld.service 
ln -s '/lib/systemd/system/mysqld.service' '/etc/systemd/system/multi-user.target.wants/mysqld.service'
[root@www ~]# mysql -u root # connect to MySQL
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.16 MySQL Community Server (GPL)

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

# show user info
mysql> select user,host,password from mysql.user; 

# set root password
mysql> set password for root@localhost=password('password'); 
Query OK, 0 rows affected (0.00 sec)
# set root password
mysql> set password for root@'127.0.0.1'=password('password'); 
Query OK, 0 rows affected (0.00 sec)
# set root password
mysql> set password for root@'www.server.world'=password('password'); 
Query OK, 0 rows affected (0.00 sec)
mysql> select user,host,password from mysql.user; 

# delete IPV6 user
mysql> delete from mysql.user where user='root' and host='::1'; 
Query OK, 1 rows affected (0.00 sec)
# delete anonymous user
mysql> delete from mysql.user where user=''; 
Query OK, 2 rows affected (0.00 sec)
mysql> select user,host,password from mysql.user;

mysql> exit # quit
Bye
[root@www ~]# mysql -u root -p # connect with root
Enter password:# MySQL root password
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.5.16 MySQL Community Server (GPL)

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> exit
Bye