1.提出问题 yum 源不可用，报 media 错误
[root@localhost repodata]# yum install php
Loading "rhnplugin" plugin
Loading "installonlyn" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for php to pack into transaction set.
media://1170972069.396645%232/php-5.1.6-5.el5.i386.rpm: [Errno 4] IOError:
Trying other mirror.
Error: failed to retrieve php-5.1.6-5.el5.i386.rpm from dvd
error was [Errno 4] IOError:
2.系统环境:
红帽centos 5.0 -32bit
iso镜像: rhel.5.0.server.centoschina.com.dvd.iso
软件环境：
yum-3.0.1-5.el5.noarch.rpm
yum-metadata-parser-1.0-8.fc6.i386.rpm
yum-rhn-plugin-0.4.3-1.el5.noarch.rpm
yum-updatesd-3.0.1-5.el5.noarch.rpm
3.yum源配置:
mkdir /mnt/cdrom
mount /XXX/rhel.5.0.server.centoschina.com.dvd.iso /mnt/cdrom -o
echo '
[dvd]
name=install dvd
baseurl=file:///mnt/cdrom/Server
enabled=1
gpgcheck=0' >/etc/yum.repos.d/dvd.repo
4.yum 测试
[root@localhost repodata]# yum install php
Loading "rhnplugin" plugin
Loading "installonlyn" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for php to pack into transaction set.
media://1170972069.396645%232/php-5.1.6-5.el5.i386.rpm: [Errno 4] IOError:
Trying other mirror.
Error: failed to retrieve php-5.1.6-5.el5.i386.rpm from dvd
error was [Errno 4] IOError:
5.错误原因:
/usr/lib/python2.4/site-packages/yum/yumRepo.py 关于remote的变量正常。
-----------------
作者: Acorex
2.X版本的yum是没有问题的。
3.X版本的yum就有问题了，我从FC6-i386-DVD.iso光盘装的，就有问题。
编辑/usr/lib/python2.4/site-packages/yum/yumRepo.py文件。
找到remote = url + '/' + relative
改成下面这样就可以了。
#remote = url + '/' + relative ＃这行是原来的，作者: Acorex
2.X版本的yum是没有问题的。
3.X版本的yum就有问题了，我从FC6-i386-DVD.iso光盘装的，就有问题。
编辑/usr/lib/python2.4/site-packages/yum/yumRepo.py文件。
找到remote = url + '/' + relative
改成下面这样就可以了。
#remote = url + '/' + relative ＃这行是原来的，注释掉
remote = '/mnt/DVD/' + relative ＃这行拷贝以后修改/mnt/DVD/是你挂载镜像的位置置
----------------------------
6.修正错误:
remote = url + '/' + relative 改为:remote = '/mnt/cdrom/Server' + relative
说明：/mnt/cdrom 是加载后iso的目录，/mnt/cdrom/Server里面存放rpm 安装包。
7.重新测试
[root@localhost Server]# yum install php
Loading "rhnplugin" plugin
Loading "installonlyn" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for php to pack into transaction set.
---> Package php.i386 0:5.1.6-5.el5 set to be updated
--> Running transaction check
--> Processing Dependency: php-common = 5.1.6-5.el5 for package: php
--> Processing Dependency: libgmp.so.3 for package: php
--> Processing Dependency: httpd-mmn = 20051115 for package: php
--> Processing Dependency: php-cli = 5.1.6-5.el5 for package: php
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for httpd to pack into transaction set.
---> Package httpd.i386 0:2.2.3-6.el5 set to be updated
---> Downloading header for php-cli to pack into transaction set.
---> Package php-cli.i386 0:5.1.6-5.el5 set to be updated
---> Downloading header for gmp to pack into transaction set.
---> Package gmp.i386 0:4.1.4-10.el5 set to be updated
---> Downloading header for php-common to pack into transaction set.
---> Package php-common.i386 0:5.1.6-5.el5 set to be updated
--> Running transaction check
--> Processing Dependency: libaprutil-1.so.0 for package: httpd
--> Processing Dependency: libapr-1.so.0 for package: httpd
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for apr-util to pack into transaction set.
---> Package apr-util.i386 0:1.2.7-6 set to be updated
---> Downloading header for apr to pack into transaction set.
---> Package apr.i386 0:1.2.7-11 set to be updated
--> Running transaction check
--> Processing Dependency: libpq.so.4 for package: apr-util
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for postgresql-libs to pack into transaction set.
---> Package postgresql-libs.i386 0:8.1.4-1.1 set to be updated
--> Running transaction check
Dependencies Resolved
=============================================================================
Package Arch Version Repository Size
=============================================================================
Installing:
php i386 5.1.6-5.el5 dvd 1.2 M
Installing for dependencies:
apr i386 1.2.7-11 dvd 123 k
apr-util i386 1.2.7-6 dvd 76 k
gmp i386 4.1.4-10.el5 dvd 665 k
httpd i386 2.2.3-6.el5 dvd 1.1 M
php-cli i386 5.1.6-5.el5 dvd 2.2 M
php-common i386 5.1.6-5.el5 dvd 139 k
postgresql-libs i386 8.1.4-1.1 dvd 195 k
Transaction Summary
=============================================================================
Install 8 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 5.7 M
Is this ok [y/N]: y
Downloading Packages:
Running Transaction Test
warning: apr-util-1.2.7-6: Header V3 DSA signature: NOKEY, key ID 37017186
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: apr ######################### [1/8]
Installing: gmp ######################### [2/8]
Installing: php-common ######################### [3/8]
Installing: php-cli ######################### [4/8]
Installing: postgresql-libs ######################### [5/8]
Installing: apr-util ######################### [6/8]
Installing: httpd ######################### [7/8]
Installing: php ######################### [8/8]
Installed: php.i386 0:5.1.6-5.el5
Dependency Installed: apr.i386 0:1.2.7-11 apr-util.i386 0:1.2.7-6 gmp.i386 0:4.1.4-10.el5 httpd.i386 0:2.2.3-6.el5 php-cli.i386 0:5.1.6-5.el5 php-common.i386 0:5.1.6-5.el5 postgresql-libs.i386 0:8.1.4-1.1
Complete!
8.最后说明：
并不是所有的系统都出现这种问题，本人在红帽企业版5.3 5.4 5.5 -64位系统中，都没有这出现这种问题。
9。脚本：
sed -i "s@remote = url + '/' + relative@remote = '/mnt/cdrom/Server/' + relative@g" 2
[root@localhost repodata]# yum install php
Loading "rhnplugin" plugin
Loading "installonlyn" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for php to pack into transaction set.
media://1170972069.396645%232/php-5.1.6-5.el5.i386.rpm: [Errno 4] IOError:
Trying other mirror.
Error: failed to retrieve php-5.1.6-5.el5.i386.rpm from dvd
error was [Errno 4] IOError:
2.系统环境:
红帽centos 5.0 -32bit
iso镜像: rhel.5.0.server.centoschina.com.dvd.iso
软件环境：
yum-3.0.1-5.el5.noarch.rpm
yum-metadata-parser-1.0-8.fc6.i386.rpm
yum-rhn-plugin-0.4.3-1.el5.noarch.rpm
yum-updatesd-3.0.1-5.el5.noarch.rpm
3.yum源配置:
mkdir /mnt/cdrom
mount /XXX/rhel.5.0.server.centoschina.com.dvd.iso /mnt/cdrom -o
echo '
[dvd]
name=install dvd
baseurl=file:///mnt/cdrom/Server
enabled=1
gpgcheck=0' >/etc/yum.repos.d/dvd.repo
4.yum 测试
[root@localhost repodata]# yum install php
Loading "rhnplugin" plugin
Loading "installonlyn" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for php to pack into transaction set.
media://1170972069.396645%232/php-5.1.6-5.el5.i386.rpm: [Errno 4] IOError:
Trying other mirror.
Error: failed to retrieve php-5.1.6-5.el5.i386.rpm from dvd
error was [Errno 4] IOError:
5.错误原因:
/usr/lib/python2.4/site-packages/yum/yumRepo.py 关于remote的变量正常。
-----------------
作者: Acorex
2.X版本的yum是没有问题的。
3.X版本的yum就有问题了，我从FC6-i386-DVD.iso光盘装的，就有问题。
编辑/usr/lib/python2.4/site-packages/yum/yumRepo.py文件。
找到remote = url + '/' + relative
改成下面这样就可以了。
#remote = url + '/' + relative ＃这行是原来的，作者: Acorex
2.X版本的yum是没有问题的。
3.X版本的yum就有问题了，我从FC6-i386-DVD.iso光盘装的，就有问题。
编辑/usr/lib/python2.4/site-packages/yum/yumRepo.py文件。
找到remote = url + '/' + relative
改成下面这样就可以了。
#remote = url + '/' + relative ＃这行是原来的，注释掉
remote = '/mnt/DVD/' + relative ＃这行拷贝以后修改/mnt/DVD/是你挂载镜像的位置置
----------------------------
6.修正错误:
remote = url + '/' + relative 改为:remote = '/mnt/cdrom/Server' + relative
说明：/mnt/cdrom 是加载后iso的目录，/mnt/cdrom/Server里面存放rpm 安装包。
7.重新测试
[root@localhost Server]# yum install php
Loading "rhnplugin" plugin
Loading "installonlyn" plugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for php to pack into transaction set.
---> Package php.i386 0:5.1.6-5.el5 set to be updated
--> Running transaction check
--> Processing Dependency: php-common = 5.1.6-5.el5 for package: php
--> Processing Dependency: libgmp.so.3 for package: php
--> Processing Dependency: httpd-mmn = 20051115 for package: php
--> Processing Dependency: php-cli = 5.1.6-5.el5 for package: php
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for httpd to pack into transaction set.
---> Package httpd.i386 0:2.2.3-6.el5 set to be updated
---> Downloading header for php-cli to pack into transaction set.
---> Package php-cli.i386 0:5.1.6-5.el5 set to be updated
---> Downloading header for gmp to pack into transaction set.
---> Package gmp.i386 0:4.1.4-10.el5 set to be updated
---> Downloading header for php-common to pack into transaction set.
---> Package php-common.i386 0:5.1.6-5.el5 set to be updated
--> Running transaction check
--> Processing Dependency: libaprutil-1.so.0 for package: httpd
--> Processing Dependency: libapr-1.so.0 for package: httpd
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for apr-util to pack into transaction set.
---> Package apr-util.i386 0:1.2.7-6 set to be updated
---> Downloading header for apr to pack into transaction set.
---> Package apr.i386 0:1.2.7-11 set to be updated
--> Running transaction check
--> Processing Dependency: libpq.so.4 for package: apr-util
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for postgresql-libs to pack into transaction set.
---> Package postgresql-libs.i386 0:8.1.4-1.1 set to be updated
--> Running transaction check
Dependencies Resolved
=============================================================================
Package Arch Version Repository Size
=============================================================================
Installing:
php i386 5.1.6-5.el5 dvd 1.2 M
Installing for dependencies:
apr i386 1.2.7-11 dvd 123 k
apr-util i386 1.2.7-6 dvd 76 k
gmp i386 4.1.4-10.el5 dvd 665 k
httpd i386 2.2.3-6.el5 dvd 1.1 M
php-cli i386 5.1.6-5.el5 dvd 2.2 M
php-common i386 5.1.6-5.el5 dvd 139 k
postgresql-libs i386 8.1.4-1.1 dvd 195 k
Transaction Summary
=============================================================================
Install 8 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 5.7 M
Is this ok [y/N]: y
Downloading Packages:
Running Transaction Test
warning: apr-util-1.2.7-6: Header V3 DSA signature: NOKEY, key ID 37017186
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: apr ######################### [1/8]
Installing: gmp ######################### [2/8]
Installing: php-common ######################### [3/8]
Installing: php-cli ######################### [4/8]
Installing: postgresql-libs ######################### [5/8]
Installing: apr-util ######################### [6/8]
Installing: httpd ######################### [7/8]
Installing: php ######################### [8/8]
Installed: php.i386 0:5.1.6-5.el5
Dependency Installed: apr.i386 0:1.2.7-11 apr-util.i386 0:1.2.7-6 gmp.i386 0:4.1.4-10.el5 httpd.i386 0:2.2.3-6.el5 php-cli.i386 0:5.1.6-5.el5 php-common.i386 0:5.1.6-5.el5 postgresql-libs.i386 0:8.1.4-1.1
Complete!
8.最后说明：
并不是所有的系统都出现这种问题，本人在红帽企业版5.3 5.4 5.5 -64位系统中，都没有这出现这种问题。
9。脚本：
sed -i "s@remote = url + '/' + relative@remote = '/mnt/cdrom/Server/' + relative@g" 2
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/7191998/viewspace-751291/ ，如需转载，请注明出处，否则将追究法律责任。
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