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apt-get update 无法连接到服务器

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apt-get update 无法连接到服务器

我尝试更新我的 Ubuntu 15.04，但无法连接到服务器

me@me:~$ sudo apt-get update 
Err http://archive.ubuntu.com vivid InRelease
Err http://archive.ubuntu.com vivid-updates InRelease
Err http://archive.ubuntu.com vivid-backports InRelease
Err http://archive.ubuntu.com vivid-security InRelease
Err http://archive.ubuntu.com vivid Release.gpg
  Unable to connect to 54.86.15.42:8080:
Err http://archive.ubuntu.com vivid-updates Release.gpg
  Unable to connect to 54.86.15.42:8080:
Err http://archive.ubuntu.com vivid-backports Release.gpg
  Unable to connect to 54.86.15.42:8080:
Err http://archive.ubuntu.com vivid-security Release.gpg
  Unable to connect to 54.86.15.42:8080:
Reading package lists... Done
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-updates/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-backports/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-security/InRelease  
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid/Release.gpg  Unable to connect to 54.86.15.42:8080:
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-updates/Release.gpg  Unable to connect to 54.86.15.42:8080:
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-backports/Release.gpg  Unable to connect to 54.86.15.42:8080:
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/vivid-security/Release.gpg  Unable to connect to 54.86.15.42:8080:
W: Some index files failed to download. They have been ignored, or old ones used instead

我尝试寻找解决方案，但无法修复。以下是我迄今为止尝试过的方法：

  1. 修改/etc/resolv.conf为：

    nameserver 8.8.8.8
nameserver 8.8.8.4

  2. 我尝试 ping Ubuntu 服务器

    me@me:~$ ping archive.ubuntu.com
PING archive.ubuntu.com (91.189.91.15) 56(84) bytes of data.
64 bytes from likho.canonical.com (91.189.91.15): icmp_seq=1 ttl=41 time=259 ms
64 bytes from likho.canonical.com (91.189.91.15): icmp_seq=2 ttl=41 time=257 ms
64 bytes from likho.canonical.com (91.189.91.15): icmp_seq=3 ttl=41 time=255 ms
64 bytes from likho.canonical.com (91.189.91.15): icmp_seq=4 ttl=41 time=288 ms
^C
--- archive.ubuntu.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 255.160/265.270/288.347/13.437 ms

  3. 在“软件和更新”中，将服务器更改为“主服务器”

  4. 我/etc/apt/apt.conf发现了这一行：

    Acquire::http::proxy 54.86.15.42:8080

    我尝试#在前面添加，但没有成功。然后尝试连接到 54.86.15.42:8080，什么也没发生。然后 ping 这个地址：

    me@me:~$ sudo ping 54.86.15.42
PING 54.86.15.42 (54.86.15.42) 56(84) bytes of data.
^C
--- 54.86.15.42 ping statistics ---
16 packets transmitted, 0 received, 100% packet loss, time 14999ms

这似乎与代理或防火墙有关，但我没有使用它们。有人知道如何解决这个问题吗？

答案1

我的问题解决了。我不知道是什么让它再次工作。我尝试了这些命令unset http_proxy并unset https_proxy按照@nilesh_101 的建议。我做的另一件事是更改代理，然后再次将其更改为默认。感谢大家回答我的问题！

答案2

我遇到了同样的问题。然后我清除了 apt.conf 文件的所有内容，它就正常工作了。

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