Question

centos6.3使用yum install gcc 出现问题

[root@localhost apr]# yum install gcc
Loaded plugins: fastestmirror, refresh-packagekit
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* extras: centos.ustc.edu.cn
* updates: centos.ustc.edu.cn
http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/repodata/repomd.xml: (28, 'connect() timed out!')
Trying other mirror.
http://centos.ustc.edu.cn/centos/6.4/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 7 - "Failed to connect to 2001:da8:d800:95::110: 缃戠粶涓嶅彲杈
Trying other mirror.
http://ftp.cs.pu.edu.tw/Linux/CentOS/6.4/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://ftp.cs.pu.edu.tw/Linux/CentOS/6.4/os/x86_64/repodata/repomd.xml: (28, 'connect() timed out!')
Trying other mirror.
请问这是怎么回事？

Answer 1

可能是因为网络原因，你的yum源的服务器反应不正常。
可以从下面几方面着手。
1，确认你的机器是否可以正常上网。
2，如果能，请在firefox里试着打开上面提到的网址，看一看是否能正常访问。
比如确认一下是否能正常访问 http://centos.ustc.edu.cn/centos/6.4/os/x86_64/repodata/repomd.xml