一、首先下载mysql5.6所需安装包， 采用rpm方式进行安装，所以下载以下载以下安装包
MySQL-client-5.6.15-1.el6.x86_64.rpm
MySQL-devel-5.6.15-1.el6.x86_64.rpm
MySQL-server-5.6.15-1.el6.x86_64.rpm
如系统可以联网，可采用以下方式下载，如不能上网可根据以下地址提前下载。
wget http://cdn.mysql.com/archives/mysql-5.6/MySQL-client-5.6.15-1.el6.x86_64.rpm
wget http://cdn.mysql.com/archives/mysql-5.6/MySQL-devel-5.6.15-1.el6.x86_64.rpm
wget http://cdn.mysql.com/archives/mysql-5.6/MySQL-server-5.6.15-1.el6.x86_64.rpm
二、安装mysql
2.1 检查系统是否已安装mysql
执行以下命令查看系统中是否安装mysql
rpm -qa|grep mysql
我的系统执行后结果如下：
[root@localhost tmp]# rpm -qa|grep mysql mysql-libs-5.1.61-4.el6.x86_64
以上结果显示安装了mysql-libs 且版本为5.1.61，此时必须删除该包，否则安装时会报有冲突，如下所示
MySQL-server-5.6.15-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.61-4.el6.x86_64
删除mysql相应的包：
yum -y remove mysql*
2.2安装mysql
依次执行以下命令进行安装
rpm -ivh MySQL-server-5.6.15-1.el6.x86_64.rpm
rpm -ivh MySQL-devel-5.6.15-1.el6.x86_64.rpm
rpm -ivh MySQL-client-5.6.15-1.el6.x86_64.rpm
执行结果如下所示：
[root@localhost tmp]# rpm -ivh MySQL-server-5.6.15-1.el6.x86_64.rpm Preparing... ########################################### [100%] 1:MySQL-server ^A########################################### [100%] 2016-02-04 18:50:39 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2016-02-04 18:50:40 6295 [Note] InnoDB: The InnoDB memory heap is disabled 2016-02-04 18:50:40 6295 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2016-02-04 18:50:40 6295 [Note] InnoDB: Compressed tables use zlib 1.2.3 2016-02-04 18:50:40 6295 [Note] InnoDB: Using Linux native AIO 2016-02-04 18:50:40 6295 [Note] InnoDB: Using CPU crc32 instructions 2016-02-04 18:50:40 6295 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2016-02-04 18:50:41 6295 [Note] InnoDB: Completed initialization of buffer pool 2016-02-04 18:50:41 6295 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created! 2016-02-04 18:50:41 6295 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB 2016-02-04 18:50:41 6295 [Note] InnoDB: Database physically writes the file full: wait... 2016-02-04 18:50:41 6295 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB 2016-02-04 18:50:47 6295 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB 2016-02-04 18:50:53 6295 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0 2016-02-04 18:50:53 6295 [Warning] InnoDB: New log files created, LSN=45781 2016-02-04 18:50:53 6295 [Note] InnoDB: Doublewrite buffer not found: creating new 2016-02-04 18:50:53 6295 [Note] InnoDB: Doublewrite buffer created 2016-02-04 18:50:53 6295 [Note] InnoDB: 128 rollback segment(s) are active. 2016-02-04 18:50:53 6295 [Warning] InnoDB: Creating foreign key constraint system tables. 2016-02-04 18:50:53 6295 [Note] InnoDB: Foreign key constraint system tables created 2016-02-04 18:50:53 6295 [Note] InnoDB: Creating tablespace and datafile system tables. 2016-02-04 18:50:53 6295 [Note] InnoDB: Tablespace and datafile system tables created. 2016-02-04 18:50:53 6295 [Note] InnoDB: Waiting for purge to start 2016-02-04 18:50:53 6295 [Note] InnoDB: 5.6.15 started; log sequence number 0 A random root password has been set. You will find it in '/root/.mysql_secret'. 2016-02-04 18:50:54 6295 [Note] Binlog end 2016-02-04 18:50:54 6295 [Note] InnoDB: FTS optimize thread exiting. 2016-02-04 18:50:54 6295 [Note] InnoDB: Starting shutdown... 2016-02-04 18:50:55 6295 [Note] InnoDB: Shutdown completed; log sequence number 1625977 2016-02-04 18:50:55 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2016-02-04 18:50:55 6333 [Note] InnoDB: The InnoDB memory heap is disabled 2016-02-04 18:50:55 6333 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2016-02-04 18:50:55 6333 [Note] InnoDB: Compressed tables use zlib 1.2.3 2016-02-04 18:50:55 6333 [Note] InnoDB: Using Linux native AIO 2016-02-04 18:50:55 6333 [Note] InnoDB: Using CPU crc32 instructions 2016-02-04 18:50:55 6333 [Note] InnoDB: Initializing buffer pool, size = 128.0M 2016-02-04 18:50:55 6333 [Note] InnoDB: Completed initialization of buffer pool 2016-02-04 18:50:55 6333 [Note] InnoDB: Highest supported file format is Barracuda. 2016-02-04 18:50:55 6333 [Note] InnoDB: 128 rollback segment(s) are active. 2016-02-04 18:50:55 6333 [Note] InnoDB: Waiting for purge to start 2016-02-04 18:50:55 6333 [Note] InnoDB: 5.6.15 started; log sequence number 1625977 2016-02-04 18:50:55 6333 [Note] Binlog end 2016-02-04 18:50:55 6333 [Note] InnoDB: FTS optimize thread exiting. 2016-02-04 18:50:55 6333 [Note] InnoDB: Starting shutdown... 2016-02-04 18:50:57 6333 [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'. 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 with the /usr/bin/mysqlbug script! 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@localhost tmp]# rpm -ivh MySQL-devel-5.6.15-1.el6.x86_64.rpm Preparing... ########################################### [100%] 1:MySQL-devel ########################################### [100%] [root@localhost tmp]# rpm -ivh MySQL-client-5.6.15-1.el6.x86_64.rpm Preparing... ########################################### [100%] 1:MySQL-client ########################################### [100%] [root@localhost tmp]#
执行结果如上所示表示mysql已经安装成功。
三、配置mysql
复制mysqlsql配置文件到/etc/my.cnf
cp /usr/share/mysql/my-default.cnf /etc/my.cnf
初始化mysql数据库
/usr/bin/mysql_install_db
启动mysql
[root@localhost tmp]# service mysql start Starting MySQL................... SUCCESS!
查看mysql随机密码
[root@localhost tmp]# cat /root/.mysql_secret # The random password set for the root user at Thu Feb 4 18:50:54 2016 (local time): 8CSQIhhd
登录mysql
执行命令
mysql -uroot -p
输入查看到的密码：
[root@localhost tmp]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.6.15 Copyright (c) 2000, 2013, 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>
修改mysql密码：
mysql> set password for 'root'@'localhost' =password('123456');
Query OK, 0 rows affected (0.02 sec)
刷新权限
mysql> flush privileges; Query OK, 0 rows affected (0.00 sec)
至此，在centos上完成安装mysql5.6