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設定centos7.3的YUM源為國內阿里雲源

# 備份原檔案
mv /etc/yum.repos.d/CentOS-Base.repo{,.bak}
# 下載新的CentOS-Base.repo。
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
# 重建快取
yum clean all
yum makecache

結果:

[[email protected] yum.repos.d]# yum makecache
已載入外掛:fastestmirror, langpacks
Determining fastest mirrors
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * rpmforge: mirrors.tuna.tsinghua.edu.cn
 * updates: mirrors.aliyun.com
http://mirrors.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://mirrors.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: (28, 'Connection timed out after 30000 milliseconds')
正在嘗試其它映象。 http://mirrors.cloud.aliyuncs.com/centos/7/os/x86_64/repodata/repomd.xml: [Errno 14] curl#6 - "Could not resolve host: mirrors.cloud.aliyuncs.com; 未知的錯誤" 正在嘗試其它映象。 base | 3.6 kB 00:00 extras | 3.4 kB 00:00
google-chrome | 951 B 00:00 rpmforge | 1.9 kB 00:00 updates | 3.4 kB 00:00 (1/12): base/7/x86_64/group_gz | 166 kB 00:01 (2/12): base/7/x86_64/filelists_db | 6.9 MB 00:52
(3/12): base/7/x86_64/primary_db | 5.9 MB 00:52 (4/12): extras/7/x86_64/prestodelta | 84 kB 00:03 (5/12): extras/7/x86_64/primary_db | 187 kB 00:01 (6/12): base/7/x86_64/other_db | 2.5 MB 00:06 (7/12): extras/7/x86_64/other_db | 120 kB 00:01 (8/12): extras/7/x86_64/filelists_db | 595 kB 00:06 (9/12): updates/7/x86_64/prestodelta | 538 kB 00:05 (10/12): updates/7/x86_64/filelists_db | 2.9 MB 00:10 (11/12): updates/7/x86_64/other_db | 478 kB 00:01 (12/12): updates/7/x86_64/primary_db | 5.2 MB 00:11 (1/6): google-chrome/filelists | 1.9 kB 00:00 (2/6): google-chrome/primary | 1.9 kB 00:00 (3/6): google-chrome/other | 481 B 00:00 (4/6): rpmforge/primary_db | 7.0 MB 00:56 (5/6): rpmforge/filelists_db | 6.1 MB 00:59 (6/6): rpmforge/other_db | 1.5 MB 00:13 google-chrome 3/3 google-chrome 3/3 google-chrome 3/3 元資料快取已建立 [[email protected] yum.repos.d]# yum makecache 已載入外掛:fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * rpmforge: mirrors.tuna.tsinghua.edu.cn * updates: mirrors.aliyun.com base | 3.6 kB 00:00 extras | 3.4 kB 00:00 google-chrome | 951 B 00:00 rpmforge | 1.9 kB 00:00 updates | 3.4 kB 00:00 元資料快取已建立 [[email protected] yum.repos.d]#