Centos Yum Configuration

These days I install a centos but I can't input in Chinese. This make me upset. Then I know It's the problem of yum. Then I changed the yum source.

Step 2

wget http://mirrors.ustc.edu.cn/centos/CentOS-Base.5.mirrors.repo -O /etc/yum.repos.d/CentOS-Base.repo


Back up the yum configuration file and modify the yum configuration file.

CP/etc/yum. Repos. d/CentOS-Base.repo CentOS-Base.repo_bak
VI/etc/yum. Repo. d/CentOS-Base.repo
You can use the USTC Yum source or the SJTU Yum source. You can select either of them.
Cover the CentOS-Base.repo with the following content.

# USTC Yum source, the latest in http://centos.ustc.edu.cn/centos/5,
# Can also be set to http://centos.ustc.edu.cn/centos/5.5/

[Base]
CentOS-5-Base
Baseurl = http://centos.ustc.edu.cn/centos/5/ OS /?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Released updates
[Update]
CentOS-5-Updates
Baseurl = http://centos.ustc.edu.cn/centos/5/updates/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Packages used/produced in the build but not released
[Addons]
CentOS-5-Addons
Baseurl = http://centos.ustc.edu.cn/centos/5/addons/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Additional packages that may be useful
[Extras]
Name = CentOS-5-extras
Baseurl = http://centos.ustc.edu.cn/centos/5/extras/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Additional packages that extend functionality of existing packages
[Centosplus]
CentOS-5-plus
Baseurl = http://centos.ustc.edu.cn/centos/5/centosplus/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Contrib-packages by centos users
[Contrib]
Name = CentOS-5-contrib
Baseurl = http://centos.ustc.edu.cn/centos/5/contrib/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# End Part 1

#================== Split line ============== Note: select only one of the upper and lower parts

# SJTU Yum source, the latest in http://ftp.sjtu.edu.cn/centos/5,
# Can also be set to http://ftp.sjtu.edu.cn/centos/5.5/

[Base]
CentOS-5-Base
Baseurl = http://ftp.sjtu.edu.cn/centos/5/ OS /?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

# Released updates
[Update]
CentOS-5-Updates
Baseurl = http://ftp.sjtu.edu.cn/centos/5/updates/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

# Packages used/produced in the build but not released
[Addons]
CentOS-5-Addons
Baseurl = http://ftp.sjtu.edu.cn/centos/5/addons/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

# Additional packages that may be useful
[Extras]
Name = CentOS-5-extras
Baseurl = http://ftp.sjtu.edu.cn/centos/5/extras/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

# Additional packages that extend functionality of existing packages
[Centosplus]
CentOS-5-plus
Baseurl = http://ftp.sjtu.edu.cn/centos/5/centosplus/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

# Contrib-packages by centos users
[Contrib]
Name = CentOS-5-contrib
Baseurl = http://ftp.sjtu.edu.cn/centos/5/contrib/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

# Part 2 ends

Step 2

USTC Yum Source
32-bit: rpm -- import http://centos.ustc.edu.cn/centos/5/ OS /i386/RPM-GPG-KEY-CentOS-5
64-bit: rpm -- import http://centos.ustc.edu.cn/centos/5/ OS /x86_64/RPM-GPG-KEY-CentOS-5

Shanghai Jiao Tong University (SJTU) Yum Source
32-bit: rpm -- import http://ftp.sjtu.edu.cn/centos/5/ OS /i386/RPM-GPG-KEY-CentOS-5
64-bit: rpm -- import http://ftp.sjtu.edu.cn/centos/5/ OS /x86_64/RPM-GPG-KEY-CentOS-5

Step 2

Yum update

After that if you have a proble like that. Do like this:

The following error always occurs during each Yum install operation:

View sourceprint?

http://mirrors.ustc.edu.cn/centos/6.0/extras/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - ""

Trying other mirror.

Error: Cannot retrieve repository metadata (repomd.xml) for repository: extras. Please verify its path and try again

At this time, I was so smart that I immediately thought that the server could not parse the domain name, And the repomd. xml could not be downloaded?

Then I pinged mirrors.ustc.edu.cn, and an error occurred: Ping: Unknown host mirrors.ustc.edu.cn. Apparently, the DNS configuration is incorrect.

Add a line to/etc/hosts.

View sourceprint?

mirrors.ustc.edu.cn  202.38.95.110

In this way, you can parse mirrors.ustc.edu.cn. Yum successful!

Note: But this is not the final solution to this problem. You need to configure the correct DNS. Open the/etc/resolv. conf file and add a nameserver IP. Replace the IP address with the DNS address provided by the IDC operator.