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如何解决 Ubuntu 20.04 上 WSL 2 的互联网问题

tag-icon • tag-icon 20.04 windows-subsystem-for-linux
如何解决 Ubuntu 20.04 上 WSL 2 的互联网问题

apt-get update尝试运行并将所需的包安装到我的 WSL 2 Ubuntu 20.04 实例时出现以下错误：

<redacted>:~$ sudo apt-get update && sudo apt-get upgrade
Err:1 http://archive.ubuntu.com/ubuntu focal InRelease
  Temporary failure resolving 'archive.ubuntu.com'
Err:2 http://security.ubuntu.com/ubuntu focal-security InRelease
  Temporary failure resolving 'security.ubuntu.com'
Err:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease
  Temporary failure resolving 'archive.ubuntu.com'
Err:4 http://archive.ubuntu.com/ubuntu focal-backports InRelease
  Temporary failure resolving 'archive.ubuntu.com'
Reading package lists... Done
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal/InRelease  Temporary failure resolving 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-updates/InRelease  Temporary failure resolving 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-backports/InRelease  Temporary failure resolving 'archive.ubuntu.com'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/focal-security/InRelease  Temporary failure resolving 'security.ubuntu.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
<redacted>:~$ sudo apt install unzip
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  zip
The following NEW packages will be installed:
  unzip
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 169 kB of archives.
After this operation, 593 kB of additional disk space will be used.
Err:1 http://archive.ubuntu.com/ubuntu focal/main amd64 unzip amd64 6.0-25ubuntu1
  Temporary failure resolving 'archive.ubuntu.com'
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/u/unzip/unzip_6.0-25ubuntu1_amd64.deb  Temporary failure resolving 'archive.ubuntu.com'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

我能做些什么来让它发挥作用？

答案1

问题是由于系统无法联系可以解析域名的 DNS 服务器。以下是一些修复方法...

暂时，您可以/etc/resolv.conf使用要使用的 DNS 服务器编辑该文件。例如，添加行nameserver 8.8.8.8，保存文件并重试。

对于持久的 DNS 配置，您可能需要编辑该/etc/systemd/resolved.conf文件。通过删除符号取消注释DNS和行。FallbackDNS#

现在添加您首选的 DNS 服务器。此FallbackDNS行无论如何都是可选的。

DNS=8.8.8.8
FallbackDNS=8.8.4.4

保存文件并退出。此外，您可能希望清除所有缓存的查询。使用命令systemd-resolve --flush-caches或resolvectl flush-caches

现在 DNS 应该可以正常工作了。

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