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sudo apt-get update 无法解析服务器，但我可以 ping 它们

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sudo apt-get update 无法解析服务器，但我可以 ping 它们

在过去的几天里，当我运行 时sudo apt-get update，它失败了，因为有些主机无法解析。但是，我可以 ping 它们，所以它们肯定正在得到解析。我的互联网运行良好。我!在角落里也看到了一个红色的三角形。

以下是 的输出示例apt-get：

steve@steve-ub:~$ sudo apt-get update
Ign http://ppa.launchpad.net trusty InRelease                                                                                 
Hit http://ppa.launchpad.net trusty Release.gpg                                                                               
Hit http://ppa.launchpad.net trusty Release                                                                                   
Hit http://ppa.launchpad.net trusty/main amd64 Packages                                                                       
Hit http://ppa.launchpad.net trusty/main i386 Packages                                                                        
Ign http://ppa.launchpad.net trusty/main Translation-en_US                                                                    
Ign http://ppa.launchpad.net trusty/main Translation-en                                                                       
Err http://repo.steampowered.com precise InRelease                                                                            

Err http://repo.steampowered.com precise Release.gpg                                                                          
  Could not resolve 'repo.steampowered.com'
Err http://archive.canonical.com trusty InRelease                                                                             

Err http://extras.ubuntu.com trusty InRelease                                                                                 

Err http://us.archive.ubuntu.com trusty InRelease

我在这里删减了一些输出，稍后继续：

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg  Could not resolve 'us.archive.ubuntu.com'

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-backports/Release.gpg  Could not resolve 'us.archive.ubuntu.com'

W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg  Could not resolve 'dl.google.com'

W: Some index files failed to download. They have been ignored, or old ones used instead.

然而，我可以 ping 无法解析的主机：

steve@steve-ub:~$ ping us.archive.ubuntu.com
PING us.archive.ubuntu.com (91.189.91.14) 56(84) bytes of data.
64 bytes from orobas.canonical.com (91.189.91.14): icmp_seq=1 ttl=49 time=59.8 ms

...

steve@steve-ub:~$ ping repo.steampowered.com
PING user-att-75-46-72-0.a1507.d.akamai.net (23.72.83.64) 56(84) bytes of data.
64 bytes from a23-72-83-64.deploy.static.akamaitechnologies.com (23.72.83.64): icmp_seq=1 ttl=56 time=20.8 ms

我怎样才能使更新再次正常运行？

答案1

如果这是远程服务器，请尝试添加 Google DNS 服务器，看看是否有帮助。在终端上：

sudo nano /etc/resolv.conf or nano /etc/resolv.conf

然后加

nameserver 8.8.8.8
nameserver 8.8.4.4

选择“是”并退出Ctrl x。

再次运行更新。

sudo apt-get update && sudo apt-get upgrade

或者

apt-get update && apt-get upgrade

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