环境:

OS:Red Hat Linux As 5

DB:5.5.29

安装linux的时候,若选择了mysql,安装系统的时候会自动安装mysql,若想安装新版本的mysql,如要将之前的安装的删除掉.

下面介绍如何删除之前的mysql重新安装新版本的mysql.

1.找到之前安装mysql

#rpm -qa|grep -i mysql

php-mysql-5.1.6-5.el5

MySQL-python-1.2.1-1

mysql-bench-5.0.22-2.1

mysql-5.0.22-2.1

mysql-server-5.0.22-2.1

mysql-connector-odbc-3.51.12-2.2

mod_auth_mysql-3.0.0-3.1

mysql-devel-5.0.22-2.1

qt-MySQL-3.3.6-20.el5

perl-DBD-MySQL-3.0007-1.fc6

2.将以上的安装包逐个删除掉,将依赖的包也相应的删除掉

rpm -e php-mysql-5.1.6-5.el5

rpm -e MySQL-python-1.2.1-1

rpm -e mysql-bench-5.0.22-2.1

rpm -e mysql-5.0.22-2.1

rpm -e mysql-server-5.0.22-2.1

rpm -e mysql-connector-odbc-3.51.12-2.2

rpm -e mod_auth_mysql-3.0.0-3.1

rpm -e mysql-devel-5.0.22-2.1

rpm -e qt-MySQL-3.3.6-20.el5

rpm -e perl-DBD-MySQL-3.0007-1.fc6

直到如下命令没有任何结果输出为止

#rpm -qa|grep -i mysql

3.安装新版本的mysql

[root@hxl ftp]# rpm -ivh MySQL-server-5.5.29-2.rhel5.i386.rpm

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

ls: /var/lib/mysql/*.err: No such file or directory

ls: /var/lib/mysql/*.err: No such file or directory

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

[root@hxl ftp]# rpm -ivh MySQL-client-5.5.29-2.rhel5.i386.rpm

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

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

4.安装完成以后启动mysql

[root@hxl subsys]# service mysql start

Starting MySQL...The server quit without updating PID file [FAILED]b/mysql/hxl.pid).

发现数据库无法启动,查看错误日志/var/lib/mysql/hxl.err,发现错误如下:

130130 22:30:32 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist

解决办法执行如下命令

#mysql_install_db --user=mysql

5.启动数据库

[root@hxl mysql]# service mysql start

Starting MySQL....                                         [  OK  ]

6.登录数据库

[root@hxl mysql]# mysql -h hxl -uroot

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.5.29 MySQL Community Server (GPL)

Copyright (c) 2000, 2012, 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>

mysql>

mysql>

mysql> select version();

+-----------+

| version() |

+-----------+

| 5.5.29    |

+-----------+

1 row in set (0.00 sec)

7.生成my.cnf文件

默认情况下mysql是不会生成my.cnf文件的,但可以进入到/usr/share/mysql/目录找一个cnf文件生成my.cnf文件,如下:

cp /usr/share/mysql/my-huge.cnf /etc/my.cnf

然后编辑my.cnf,按照需要修改或添加相应参数.

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