linux安装mysql 5.6实时教程和配置

今天数据库服务器可使用了，现在下1步就是安装mysql，决定mysql 版本为5.6.14

1. 检查系统中是不是已安装过mysql。
   rpm -qa | grep mysql
   以下图：
   
   
2. 如果存在，则需要删除。
   yum -y remove mysql*
   
3. 继续检查1下是不是还存在mysql
   rpm -qa | grep -i mysql
   
   
4. 然后下1步就是下载rpm包了。需要下载：
   MySQL-client⑸.6.15⑴.el6.x86_64.rpm
   MySQL-devel⑸.6.15⑴.el6.x86_64.rpm
   MySQL-server⑸.6.15⑴.el6.x86_64.rpm
   
   逐1履行命令：
   wget http://cdn.mysql.com/archives/mysql⑸.6/MySQL-client⑸.6.15⑴.el6.x86_64.rpm
   wget http://cdn.mysql.com/archives/mysql⑸.6/MySQL-devel⑸.6.15⑴.el6.x86_64.rpm
   wget http://cdn.mysql.com/archives/mysql⑸.6/MySQL-server⑸.6.15⑴.el6.x86_64.rpm
   
   
   
5. 接下来就是安装了分别顺次履行：
   [root@iZ25in7iu0fZ rpm]# rpm -ivh MySQL-server⑸.6.15⑴.el6.x86_64.rpm
   Preparing...                ########################################### [100%]
      1:MySQL-server           ########################################### [100%]
   2015-03-06 08:16:03 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
   2015-03-06 08:16:03 28629 [Note] InnoDB: The InnoDB memory heap is disabled
   2015-03-06 08:16:03 28629 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
   2015-03-06 08:16:03 28629 [Note] InnoDB: Compressed tables use zlib 1.2.3
   2015-03-06 08:16:03 28629 [Note] InnoDB: Using Linux native AIO
   2015-03-06 08:16:03 28629 [Note] InnoDB: Using CPU crc32 instructions
   2015-03-06 08:16:03 28629 [Note] InnoDB: Initializing buffer pool, size = 128.0M
   2015-03-06 08:16:03 28629 [Note] InnoDB: Completed initialization of buffer pool
   2015-03-06 08:16:03 28629 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!
   2015-03-06 08:16:03 28629 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB
   2015-03-06 08:16:03 28629 [Note] InnoDB: Database physically writes the file full: wait...
   2015-03-06 08:16:03 28629 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB
   2015-03-06 08:16:04 28629 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB
   2015-03-06 08:16:06 28629 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
   2015-03-06 08:16:06 28629 [Warning] InnoDB: New log files created, LSN=45781
   2015-03-06 08:16:06 28629 [Note] InnoDB: Doublewrite buffer not found: creating new
   2015-03-06 08:16:06 28629 [Note] InnoDB: Doublewrite buffer created
   2015-03-06 08:16:06 28629 [Note] InnoDB: 128 rollback segment(s) are active.
   2015-03-06 08:16:06 28629 [Warning] InnoDB: Creating foreign key constraint system tables.
   2015-03-06 08:16:06 28629 [Note] InnoDB: Foreign key constraint system tables created
   2015-03-06 08:16:06 28629 [Note] InnoDB: Creating tablespace and datafile system tables.
   2015-03-06 08:16:06 28629 [Note] InnoDB: Tablespace and datafile system tables created.
   2015-03-06 08:16:06 28629 [Note] InnoDB: Waiting for purge to start
   2015-03-06 08:16:06 28629 [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'.
   2015-03-06 08:16:07 28629 [Note] Binlog end
   2015-03-06 08:16:07 28629 [Note] InnoDB: FTS optimize thread exiting.
   2015-03-06 08:16:07 28629 [Note] InnoDB: Starting shutdown...
   2015-03-06 08:16:08 28629 [Note] InnoDB: Shutdown completed; log sequence number 1625977
   
   
   
   
   2015-03-06 08:16:08 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
   2015-03-06 08:16:08 28652 [Note] InnoDB: The InnoDB memory heap is disabled
   2015-03-06 08:16:08 28652 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
   2015-03-06 08:16:08 28652 [Note] InnoDB: Compressed tables use zlib 1.2.3
   2015-03-06 08:16:08 28652 [Note] InnoDB: Using Linux native AIO
   2015-03-06 08:16:08 28652 [Note] InnoDB: Using CPU crc32 instructions
   2015-03-06 08:16:08 28652 [Note] InnoDB: Initializing buffer pool, size = 128.0M
   2015-03-06 08:16:08 28652 [Note] InnoDB: Completed initialization of buffer pool
   2015-03-06 08:16:08 28652 [Note] InnoDB: Highest supported file format is Barracuda.
   2015-03-06 08:16:08 28652 [Note] InnoDB: 128 rollback segment(s) are active.
   2015-03-06 08:16:08 28652 [Note] InnoDB: Waiting for purge to start
   2015-03-06 08:16:08 28652 [Note] InnoDB: 5.6.15 started; log sequence number 1625977
   2015-03-06 08:16:08 28652 [Note] Binlog end
   2015-03-06 08:16:08 28652 [Note] InnoDB: FTS optimize thread exiting.
   2015-03-06 08:16:08 28652 [Note] InnoDB: Starting shutdown...
   2015-03-06 08:16:10 28652 [Note] InnoDB: Shutdown completed; log sequence number 1625987
   
   
   
   [root@iZ25in7iu0fZ rpm]# rpm -ivh MySQL-devel⑸.6.15⑴.el6.x86_64.rpm
   Preparing...                ########################################### [100%]
      1:MySQL-devel            ########################################### [100%]
   [root@iZ25in7iu0fZ rpm]# rpm -ivh MySQL-client⑸.6.15⑴.el6.x86_64.rpm
   Preparing...                ########################################### [100%]
      1:MySQL-client           ########################################### [100%]
   
   修改配置文件位置。
   [root@iZ25in7iu0fZ rpm]# cp /usr/share/mysql/my-default.cnf /etc/my.cnf
6. 初始化MySQL及设置密码
   cp /usr/share/mysql/my-default.cnf /etc/my.cnf
   /usr/bin/mysql_install_db
   cat /root/.mysql_secret 
   记录最后的密码
   mysql -p ---输入记录的密码，便可登录mysql。
   set password for 'root'@'localhost' =password('新密码');
   flush privileges;
   exit
7. 设置自启动
   chkconfig mysql on
   
   
8.  MySQL的默许安装位置
   
   

   1	/var/lib/mysql/               #数据库目录

   2	/usr/share/mysql              #配置文件目录

   3	/usr/bin                     #相干命令目录

   4	/etc/init.d/mysql              #启动脚本

9. 修改字符集和数据寄存目录
   原来配置文件：
   
   
   更改以后为：
   
   # For advice on how to change settings please see
   # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
   # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the
   # *** default location during install, and will be replaced if you
   # *** upgrade to a newer version of MySQL.
   
   
   [client]
   port            = 3306
   default-character-set=utf8
   
   
   
   
   [mysqld]
   
   
   # Remove leading # and set to the amount of RAM for the most important data
   # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
   # innodb_buffer_pool_size = 128M
   
   
   # Remove leading # to turn on a very important data integrity option: logging
   # changes to the binary log between backups.
   # log_bin
   
   
   # These are commonly set, remove the # and set as required.
   # basedir = .....
   datadir = /mnt/data/mysql
   port = 3306
   # server_id = .....
   # socket = .....
   
   
   lower_case_table_names=1
   
   
   max_connections=1000
   
   
   collation_server = utf8_general_ci
   character_set_server = utf8
   
   
   # default-character-set=utf8
   # init_connect='SET NAMES utf8'
   
   
   
   
   # Remove leading # to set options mainly useful for reporting servers.
   # The server defaults are faster for transactions and fast SELECTs.
   # Adjust sizes as needed, experiment to find the optimal values.
   # join_buffer_size = 128M
   # sort_buffer_size = 2M
   # read_rnd_buffer_size = 2M
   
   
   sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
   
   
   [mysql]
   default-character-set = utf8
   
   注意标红的。
   
   
   然后就是修改数据库的数据目录：
   vi /etc/init.d/mysql
   
   
   
10. 
    重启数据库：
    
    
    service mysql restart
11. 
    大功告成。