下載CentOS6.5系統(tǒng)源

http://mirror.nsc.liu.se/centos-store/6.5/isos/x86_64/CentOS-6.5-x86_64-bin-DVD1.iso

下載CentOS6.5系統(tǒng)的yum組件

http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/Packages/yum-plugin-upgrade-helper-1.1.30-14.el6.noarch.rpm
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/Packages/yum-utils-1.1.30-14.el6.noarch.rpm

下載CentOS6.5系統(tǒng)rpm備用

http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/RPM-GPG-KEY-CentOS-6
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/RPM-GPG-KEY-CentOS-Debug-6
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/RPM-GPG-KEY-CentOS-Security-6
http://mirror.nsc.liu.se/centos-store/6.5/os/x86_64/RPM-GPG-KEY-CentOS-Testing-6

將下載的全部傳到需替換的服務器上文章來源地址http://www.zghlxwxcb.cn/news/detail-421525.html

替換原redhat源

1. 查看系統(tǒng)自身安裝的yum軟件包

rpm -qa | grep yum

2. 卸載所有自帶yum軟件包

rpm -e 軟件包名稱 --nodeps

3. 刪除所有repo相關文件

rm -rf /etc/yum.conf
rm -rf /etc/yum.repos.d/
rm -rf /var/cache/yum

4.安裝下載的所有yum相關組件

rpm -ivh yum-*

5.準備配置本地源

配置本地源

1. 創(chuàng)建文件夾

mkdir /mnt/cdrom

2. 掛載iso鏡像文件到/mnt/cdrom節(jié)點下

mount -o loop /usr/local/CentOS-6.5-x86_64-bin-DVD1.iso /mnt/cdrom

3. 編輯.repo文件

# 進入到/etc/yum.repos.d/ 文件夾
cd /etc/yum.repos.d/
# 移除該文件夾下的所有后綴為.repo的文件
mv *.repo /tmp
# 創(chuàng)建自己的.repo文件，內容如下，保存退出！
# vim local.repo 
'''
[local_server]   #庫名稱
name=Thisis a local repo  #名稱描述 
baseurl=file:///mnt/cdrom  #yum源目錄，源地址
enabled=1     #是否啟用該yum源，0為禁用
gpgcheck=1    #檢查GPG-KEY，0為不檢查，1為檢查 
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6  #gpgcheck=0時無需配置
'''

4. 清除緩存

yum clean all 
'''
Loaded plugins: fastestmirror, refresh-packagekit, security
Cleaning repos: local_server
Cleaning up Everything
Cleaning up list of fastest mirrors
'''

5. 建立新緩存

yum makecache
'''
Loaded plugins: fastestmirror, refresh-packagekit, security
Determining fastest mirrors
local_server                                             |4.0 kB     00:00 ...
local_server/group_gz                                    | 209kB     00:00 ...
local_server/filelists_db                                | 4.8 MB     00:00 ...
local_server/primary_db                                  | 3.5 MB     00:00 ...
local_server/other_db                                    | 2.0MB     00:00 ...
Metadata Cache Created
'''

6. yum本地源安裝完成

yum list

更換系統(tǒng)

1. 卸載系統(tǒng)鏡像

rpm -e redhat-release-server-6.5-18.el7.x86_64 --nodeps

2. 更新yum

yum update -y

3. 重啟操作系統(tǒng)

reboot

4. 驗證

cat /etc/redhat-release
# 若找不到此文件，查找是否有/etc/centos-release文件
# 若有，則執(zhí)行
ln -s centos-release redhat-release
# 若無，創(chuàng)建centos-release
vi centos-release
'''
寫入當前系統(tǒng)版本號
'''
# 保存退出，并執(zhí)行
ln -s centos-release redhat-release

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