[hadoop@zlyh08 chx]$ rpm -qa|grep -i mysql
mysql-community-libs-compat-5.6.14-3.el6.x86_64
mysql-community-devel-5.6.14-3.el6.x86_64
mysql-community-common-5.6.14-3.el6.x86_64
mysql-community-libs-5.6.14-3.el6.x86_64
mysql-community-server-5.6.14-3.el6.x86_64
mysql-community-client-5.6.14-3.el6.x86_64
perl-DBD-MySQL-4.013-3.el6.x86_64
[hadoop@zlyh08 chx]$ 

rpm -e mysql-community-server-5.6.14-3.el6.x86_64
rpm -e mysql-community-client-5.6.14-3.el6.x86_64

[root@zlyh08 chx]# rpm -Uvh MySQL-server-5.6.25-1.el6.x86_64.rpm 
Preparing... ########################################### [100%]
file /usr/share/mysql/bulgarian/errmsg.sys from install of MySQL-server-5.6.25-1.el6.x86_64 conflicts with file from package mysql-community-common-5.6.14-3.el6.x86_64
…………
file /usr/share/mysql/french/errmsg.sys from install of MySQL-server-5.6.25-1.el6.x86_64 conflicts with file from package mysql-community-common-5.6.14-3.el6.x86_64

[root@zlyh08 chx]# rpm -ivh MySQL-server-5.6.25-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-server ########################################### [100%]
2015-07-01 16:02:40 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2015-07-01 16:02:40 0 [Note] /usr/sbin/mysqld (mysqld 5.6.25) starting as process 28611 ...
2015-07-01 16:02:40 28611 [Note] InnoDB: Using atomics to ref count buffer pool pages
2015-07-01 16:02:40 28611 [Note] InnoDB: The InnoDB memory heap is disabled
…………
2015-07-01 16:02:44 28633 [Note] InnoDB: FTS optimize thread exiting.
2015-07-01 16:02:44 28633 [Note] InnoDB: Starting shutdown...
2015-07-01 16:02:45 28633 [Note] InnoDB: Shutdown completed; log sequence number 1625987
A RANDOM PASSWORD HAS BEEN SET FOR THE MySQL root USER !
You will find that password in '/root/.mysql_secret'.#竟然没发现这一行，难怪装完一直连不上
----------
[root@appserver ~]# cat /root/.mysql_secret
# The random password set for the root user at Thu Nov 20 15:52:02 2014 (local time): sFpJCf6WLhyYKc35
----------
You must change that password on your first connect,
no other statement but 'SET PASSWORD' will be accepted.
See the manual for the semantics of the 'password expired' flag.
Also, the account for the anonymous user has been removed.
In addition, you can run:
/usr/bin/mysql_secure_installation
which will also give you the option of removing the test database.
This is strongly recommended for production servers.
See the manual for more instructions.
Please report any problems at http://bugs.mysql.com/
The latest information about MySQL is available on the web at
http://www.mysql.com
Support MySQL by buying support/licenses at http://shop.mysql.com
New default config file was created as /usr/my.cnf and
will be used by default by the server when you start it.
You may edit this file to change server settings
[root@zlyh08 chx]# rpm -ivh MySQL-client-5.6.25-1.el6.x86_64.rpm 
Preparing... ########################################### [100%]
1:MySQL-client ########################################### [100%]
[root@zlyh08 chx]#

[root@zlyh08 chx]# service mysql start
Starting MySQL... SUCCESS!

[root@zlyh08 mysql-5.6.25]# mysql
ERROR 2002 (HY000): Can t connect to local MySQL server through socket '/data1/mysql/mysql.sock' (2)

[mysql]
socket=/data1/mysql/mysql.sock
default-character-set=utf8
[mysqld] #mysqld下面没有配置socket
#skip-grant-tables
interactive_timeout=300
wait_timeout=300

[mysql]
socket=/data1/mysql/mysql.sock
default-character-set=utf8
[mysqld]
#skip-grant-tables
socket=/data1/mysql/mysql.sock #增加此行，之前只[mysql]加了这一项
interactive_timeout=300
wait_timeout=300

[hadoop@zlyh08 report_script]$ mysql -hzlyh08 -uroot -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 233
Server version: 5.6.25 MySQL Community Server (GPL)
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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| apollo_v1.0 |
| hive |
| log |
| metastore |
| mysql |
| oozie |
| performance_schema |
| test |
+--------------------+
9 rows in set (0.00 sec)
mysql>