CentOS update system

After CentOS is installed, you must first modify the update source and upgrade it to the latest system. Domestic faster update source, I recommend: http://mirrors.163.com NetEase update source, just found, the speed is OK. First we have to back up the system's previous profile CentOS-Base.repo: sudocp/etc/yum. repos. d/CentOS-Base.repo/etc/yum. repos. d

After CentOS is installed, you must first modify the update source and upgrade it to the latest system.
Domestic fast update sources, I recommend:
Http://mirrors.163.com NetEase update source, just found, the speed can also.

First we have to back up the system's previous profile CentOS-Base.repo:
Sudo cp/etc/yum. repos. d/CentOS-Base.repo/etc/yum. repos. d/CentOS-Base.repo.bak
Edit The yum configuration file:
Sudo vi/etc/yum. repos. d/CentOS-Base.repo

Comment out the comment list in the file in CenOS-Base-repo, remove the comment before baseurl, and change the source address to NetEase's

The configuration file content is:

[Base]
Name = CentOS-$ releasever-Base
# Items list = http://mirrorlist.centos.org /? Release = $ releasever & arch = $ basearch & repo = OS
Baseurl = http://mirrors.163.com/centos/?releasever/ OS /?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Released updates
[Updates]
Name = CentOS-$ releasever-Updates
# Items list = http://mirrorlist.centos.org /? Release = $ releasever & arch = $ basearch & repo = updates
Baseurl = http://mirrors.163.com/centos/?releasever/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]
Name = CentOS-$ releasever-Addons
# Items list = http://mirrorlist.centos.org /? Release = $ releasever & arch = $ basearch & repo = addons
Baseurl = http://mirrors.163.com/centos/?releasever/addons/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Additional packages that may be useful
[Extras]
Name = CentOS-$ releasever-Extras
# Items list = http://mirrorlist.centos.org /? Release = $ releasever & arch = $ basearch & repo = extras
Baseurl = http://mirrors.163.com/centos/?releasever/extras/?basearch/
Gpgcheck = 1
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

# Additional packages that extend functionality of existing packages
[Centosplus]
Name = CentOS-$ releasever-Plus
# Items list = http://mirrorlist.centos.org /? Release = $ releasever & arch = $ basearch & repo = centosplus
Baseurl = http://mirrors.163.com/centos/?releasever/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-$ releasever-Contrib
# Items list = http://mirrorlist.centos.org /? Release = $ releasever & arch = $ basearch & repo = contrib
Baseurl = http://mirrors.163.com/centos/?releasever/contrib/?basearch/
Gpgcheck = 1
Enabled = 0
Gpgkey = http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5

Where:

Repositoryid: Used to specify a repository

Name: specifies the name of a readable repository.

Baseurl: specifies the URL of the repository. it can be of the following three types, such as http, ftp, and file.

Repository list: specifies the image site of the repository.

Enable: Specifies whether to use this repository. the default value is 1.

Gpgcheck: Used to specify whether to check the GPG signature of the software package.

Gpgkey: Used to specify the URL of the GPG signature file.

I usually use root superuser

 

If you are a common user, add sudo at the beginning of the command.

Run the following command:

Rpm -- import/etc/pki/rpm-gpg/RPM-GPG-KEY *

Yum update