查看OS版本

[root@justin mysqldata]# more /etc/issue

Enterprise Linux Enterprise Linux AS release 4 (October Update 8)

卸载了已有的mysql

首先运行yum remove mysql

然后通过rpm –qa | grep mysql查看是否还有残余的Mysql插件，若有则通过以下命令删除

[root@justin oracle]# rpm -e mysqlclient10-3.23.58-4.RHEL4.1

error: "mysqlclient10-3.23.58-4.RHEL4.1" specifies multiple packages

[root@justin oracle]# rpm -e --allmatches mysqlclient10-3.23.58-4.RHEL4.1

error: Failed dependencies:

        libmysqlclient.so.10()(64bit) is needed by (installed) MyODBC-2.50.39-25.RHEL4.1.x86_64

        libmysqlclient.so.10()(64bit) is needed by (installed) qt-MySQL-3.3.3-16.el4.x86_64

[root@justin oracle]# rpm -e  MyODBC-2.50.39-25.RHEL4.1.x86_64

[root@justin oracle]# rpm -e qt-MySQL-3.3.3-16.el4.x86_64

[root@justin oracle]# rpm -e --allmatches mysqlclient10-3.23.58-4.RHEL4.1

[root@justin oracle]# rpm -qa | grep mysql

安装MySQL-server-5.5.14-1.rhel5.x86_64.rpm一直报告缺失相应patch

[root@justin oracle]# rpm -ivh MySQL-server-5.5.14-1.rhel5.x86_64.rpm

warning: MySQL-server-5.5.14-1.rhel5.x86_64.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5

error: Failed dependencies:

        libc.so.6(GLIBC_2.4)(64bit) is needed by MySQL-server-5.5.14-1.rhel5.x86_64

        rtld(GNU_HASH) is needed by MySQL-server-5.5.14-1.rhel5.x86_64

尝试yum install libc.so.6却又不成功，于是改为安装MySQL-server-5.5.14-1.linux2.6.x86_64.rpm和MySQL-client-5.5.14-1.linux2.6.x86_64.rpm，然而安装的时候却又遇到以下错误。

[root@justin oracle]# rpm -ivh MySQL-server-5.1.51-1.glibc23.x86_64.rpm

warning: MySQL-server-5.1.51-1.glibc23.x86_64.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5

Preparing...                ########################################### [100%]

   1:MySQL-server           ########################################### [100%]

ERROR: 1136  Column count doesn't match value count at row 1

110719 18:08:15 [ERROR] Aborting

110719 18:08:15 [Note] /usr/sbin/mysqld: Shutdown complete

Installation of system tables failed!  Examine the logs in

/var/lib/mysql for more information.

You can try to start the mysqld daemon with:

    shell> /usr/sbin/mysqld --skip-grant &

and use the command line tool /usr/bin/mysql

to connect to the mysql database and look at the grant tables:

    shell> /usr/bin/mysql -u root mysql

    mysql> show tables

Try 'mysqld --help' if you have problems with paths.  Using --log

gives you a log in /var/lib/mysql that may be helpful.

Please consult the MySQL manual section

'Problems running mysql_install_db', and the manual section that

describes problems on your OS.  Another information source are the

MySQL email archives available at http://lists.mysql.com/.

Please check all of the above before mailing us!  And remember, if

you do mail us, you MUST use the /usr/bin/mysqlbug script!

费了一大堆力气，最后找到答案，原来的mysql信息没有卸载干净，只需要移除/var/lib/mysql即可解决。

通过rpm –ivh 先后安装MySQL-server-5.5.14-1.linux2.6.x86_64.rpm和MySQL-client-5.5.14-1.linux2.6.x86_64.rpm.

Mysql默认安装路径为根目录，而61上的根目录空间有限，需将其转移的/data目录

[root@justin oracle]# df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/sda3              20G   15G  4.5G  77% /

/dev/sda1             289M   25M  250M  10% /boot

/dev/sda5             681G  213G  434G  33% /data

none                   63G     0   63G   0% /dev/shm

首先在/data目录下创建名为mysqldata的目录，然后chown –R  mysql /data/mysqldata  和chgrp –R mysql /data/mysqldata 将其属主设置成mysql

然后停止mysql服务，执行service mysql stop；

将/var/lib/mysql目录下所有的文件迁移到新创建的/data/myqldata下，mv  /var/lib/mysql  /data/mysqldata；

修改配置文件/etc/my.conf：

#socket         = /var/lib/mysql/mysql.sock—修改前

socket = /data/mysqldata/mysql/mysql.sock—修改后的值

修改/etc/rc.d/init.d/mysql：

  if test -z "$datadir"

   #datadir=/var/lib/mysql—修改前的值

   datadir=/data/mysqldata/mysql—修改后的值

保存并退出

此时重启service mysql start，虽然能启动成功，却多出一条警告信息

[root@justin mysqldata]# service mysql start

/etc/init.d/mysql: line 71: /data/mysqldata/mysql: is a directory

Starting MySQL..[  OK  ]

经查实，文件/etc/rc.d/init.d/myql中的记录 datadir=/data/mysqldata/mysql 等号后面多出一个空格，去除即可