centos安装mysql5.7

yum install mysql-community-server
service mysqld restart

[root@c02 ~]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

[root@c02 ~]# grep "password" /var/log/mysqld.log
2015-12-06T16:08:10.547239Z 1 [Note] A temporary password is generated for root@localhost: uGKNd<I04+?k

[root@c02 ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.9

Copyright (c) 2000, 2015, 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
[root@c02 ~]#