`apt-get update` 找不到 Ubuntu 服务器

Question

sudo apt-get update在我的服务器（有互联网连接）上运行失败。服务器是否暂时损坏，或者我的 APT 配置错误并使用旧服务器？简而言之，我该如何解决这个问题？

这是输出：

~$ uname -a
Linux nematode 2.6.28-19-server #66-Ubuntu SMP Sat Oct 16 18:41:24 UTC 2010 i686 GNU/Linux

~$ sudo apt-get update
Err http://us.archive.ubuntu.com jaunty Release.gpg
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty/main Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty/restricted Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty/universe Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty/multiverse Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty-updates Release.gpg
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty-updates/main Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty-updates/restricted Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty-updates/universe Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://us.archive.ubuntu.com jaunty-updates/multiverse Translation-en_US
  Could not resolve 'us.archive.ubuntu.com'
Err http://security.ubuntu.com jaunty-security Release.gpg
  Could not resolve 'security.ubuntu.com'
Err http://security.ubuntu.com jaunty-security/main Translation-en_US
  Could not resolve 'security.ubuntu.com'
Err http://security.ubuntu.com jaunty-security/restricted Translation-en_US
  Could not resolve 'security.ubuntu.com'
Err http://security.ubuntu.com jaunty-security/universe Translation-en_US
  Could not resolve 'security.ubuntu.com'
Err http://security.ubuntu.com jaunty-security/multiverse Translation-en_US
  Could not resolve 'security.ubuntu.com'
Reading package lists... Done
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/Release.gpg  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/main/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/restricted/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/universe/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty/multiverse/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/Release.gpg  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/main/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/restricted/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/universe/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/jaunty-updates/multiverse/i18n/Translation-en_US.bz2  Could not resolve 'us.archive.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/Release.gpg  Could not resolve 'security.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/main/i18n/Translation-en_US.bz2  Could not resolve 'security.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/restricted/i18n/Translation-en_US.bz2  Could not resolve 'security.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/universe/i18n/Translation-en_US.bz2  Could not resolve 'security.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/jaunty-security/multiverse/i18n/Translation-en_US.bz2  Could not resolve 'security.ubuntu.com'
W: Some index files failed to download, they have been ignored, or old ones used instead.
W: You may want to run apt-get update to correct these problems

Answer 1

听起来像是DNS问题。要修复它，您需要确保

/etc/resolv.conf

有很好的 DNS 服务器条目。

Google有您可以使用的公共 DNS 服务器。

因此，例如，您可以将以下 2 行添加到/etc/resolv.conf文件顶部（这些指向 Google DNS 服务器），如上所述：

nameserver 8.8.8.8 
nameserver 8.8.4.4

当然，您需要以 root 身份更改此文件，并在进行任何更改之前进行备份！

Answer 2

你能从命令行解析任何这些主机吗？

jinx:775 Z$ ping us.archive.ubuntu.com
PING us.archive.ubuntu.com (91.189.92.171) 56(84) bytes of data.
64 bytes from cassava.canonical.com (91.189.92.171): icmp_seq=1 ttl=128 time=104 ms

如果没有，下一步是尝试host -v：

jinx:776 Z$ host -v us.archive.ubuntu.com
Trying "us.archive.ubuntu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14243
;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;us.archive.ubuntu.com.         IN      A

;; ANSWER SECTION:
us.archive.ubuntu.com.  592     IN      A       91.189.88.31
us.archive.ubuntu.com.  592     IN      A       91.189.88.40
us.archive.ubuntu.com.  592     IN      A       91.189.88.45
us.archive.ubuntu.com.  592     IN      A       91.189.88.46
us.archive.ubuntu.com.  592     IN      A       91.189.92.169
us.archive.ubuntu.com.  592     IN      A       91.189.92.170
us.archive.ubuntu.com.  592     IN      A       91.189.92.171
us.archive.ubuntu.com.  592     IN      A       91.189.88.30

Received 167 bytes from 10.211.55.1#53 in 37 ms
Trying "us.archive.ubuntu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50130
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;us.archive.ubuntu.com.         IN      AAAA

;; AUTHORITY SECTION:
ubuntu.com.             1800    IN      SOA     ns1.canonical.com. hostmaster.canonical.com. 2011030301 10800 3600 604800 3600

Received 100 bytes from 10.211.55.1#53 in 65 ms
Trying "us.archive.ubuntu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54875
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;us.archive.ubuntu.com.         IN      MX

;; AUTHORITY SECTION:
ubuntu.com.             1800    IN      SOA     ns1.canonical.com. hostmaster.canonical.com. 2011030301 10800 3600 604800 3600

Received 100 bytes from 10.211.55.1#53 in 62 ms

查找 DNS 服务器返回的错误。

Answer 3

我知道这个线程是超级旧的，但对于任何仍在查看的人，我通过断开并重新连接到无线接入点来解决这个问题。

Answer 4

我经常在 /etc/resolv.conf 中使用 8.8.8.8 来解决这个问题。特别是在处理不稳定的当月廉价云提供商（在本例中为 linode）的东西时。

猫 /etc/resolv.conf

nameserver 8.8.8.8
nameserver 8.8.4.4
#nameserver 72.14.179.5
#nameserver 72.14.188.5

这些是 Google 的公共 DNS 服务器。是的，他们可能会跟踪那些日志。但我倾向于在这些服务器上访问的唯一站点是 git 和 ubuntu 档案。