Redhat5.6下mysql的安装和使用

一、redhat下mysql的安装

读者寄语：
1、安装可能会出现以下错误：
 

2、这些mysql的安装包都在redhat光盘里可以找到。

依次按照下面的顺序安装，就会成功。

   sudo rpm -ivh  perl-DBI-1.52-2.el5.i386.rpm
   sudo rpm -ivh  mysql-5.0.77-4.el5_5.4.i386.rpm
   sudo rpm -ivh  perl-DBD-MySQL-3.0007-2.el5.i386.rpm
   sudo rpm -ivh  mysql-server-5.0.77-4.el5_5.4.i386.rpm

3、出现如下错误，可能是没有root权限导致的：

error: can't create transaction lock on /var/lib/rpm/__db.000

二、redhat下mysql的使用

1、mysql的启动、登录并并设置密码：

$sudo /etc/init.d/mysqld start

$mysqladmin -u rootpassword "123456"

2、 登录mysql并创建数据库

[root@shiyue5~]# mysql -u root -p

$mysql>create database shiyue;

3、 配置客户端连接

mysql>use mysql;

mysql>grant all on *.* to root@"%" identified by "123456";

通过对1042问题代码的查询，得出编辑/etc/my.cnf文件，在[mysqld]内添加一行skip-name-resolve

在/etc/目录下如没有my.cnf配置文件，则请到/usr/share/mysql/下找到*.cnf文件，拷贝其中的一个到/etc/并改名为my.cnf

[root@shiyue5~]# cp /usr/share/mysql/my-medium.cnf /etc/my.cnf

[root@shiyue5~]# vi /etc/my.cnf

 

#Example MySQL config file for medium systems.

#

# Thisis for a system with little memory (32M - 64M) where MySQL plays

# animportant part, or systems up to 128M where MySQL is used together with

#other programs (such as a web server)

#

#MySQL programs look for option files in a set of

#locations which depend on the deployment platform.

# Youcan copy this option file to one of those

#locations. For information about these locations, see:

#http://dev.mysql.com/doc/mysql/en/option-files.html

#

# Inthis file, you can use all long options that a program supports.

# Ifyou want to know which options a program supports, run the program

# withthe "--help" option.

 

# Thefollowing options will be passed to all MySQL clients

[client]

#password       = your_password

port            = 3306

socket          = /var/lib/mysql/mysql.sock

 

# Herefollows entries for some specific programs

 

# TheMySQL server

[mysqld]

port            = 3306

socket          = /var/lib/mysql/mysql.sock

skip-external-locking

key_buffer_size= 16M

max_allowed_packet= 1M

table_open_cache= 64

sort_buffer_size= 512K

net_buffer_length= 8K

read_buffer_size= 256K

read_rnd_buffer_size= 512K

myisam_sort_buffer_size= 8M

skip-name-resolve

 

#Don't listen on a TCP/IP port at all. This can be a security enhancement,

# ifall processes that need to connect to mysqld run on the same host.

# Allinteraction with mysqld must be made via Unix sockets or named pipes.

"/etc/my.cnf"145L, 4700C written

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