我从 Ubuntu 卸载了 apache2，现在无法重新安装它

Question

我从 Ubuntu 中卸载了我的 apache2，因为它现在看起来不起作用，我尝试使用以下命令再次安装它sudo apt install apache2

我可以看到以下错误

E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apr/libapr1_1.7.0-8ubuntu0.22.04.1_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apr-util/libaprutil1_1.6.1-5ubuntu4.22.04.2_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apr-util/libaprutil1-dbd-sqlite3_1.6.1-5ubuntu4.22.04.2_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apr-util/libaprutil1-ldap_1.6.1-5ubuntu4.22.04.2_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apache2/apache2-bin_2.4.52-1ubuntu4.7_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apache2/apache2-data_2.4.52-1ubuntu4.7_all.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apache2/apache2-utils_2.4.52-1ubuntu4.7_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/a/apache2/apache2_2.4.52-1ubuntu4.7_amd64.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/pool/main/s/ssl-cert/ssl-cert_1.1.2_all.deb  Could not resolve 'mirrors.cloud.aliyuncs.com'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

我尝试过apt-get update，现在出现以下警告

W: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/dists/jammy/InRelease  Could not resolve 'mirrors.cloud.aliyuncs.com'
W: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/dists/jammy-updates/InRelease  Could not resolve 'mirrors.cloud.aliyuncs.com'
W: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/dists/jammy-backports/InRelease  Could not resolve 'mirrors.cloud.aliyuncs.com'
W: Failed to fetch http://mirrors.cloud.aliyuncs.com/ubuntu/dists/jammy-security/InRelease  Could not resolve 'mirrors.cloud.aliyuncs.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.

当我运行下面的命令时它给出错误

sudo systemctl 状态 apache2

错误：找不到单元 apache2.service。

之后

sudo ufw app list

它说：可用的应用程序：

• 开放SSH
• iperf

所以现在我无法在Ubuntu上安装apache2

Answer 1

由于某种我们不知道的原因，您安装的镜像服务器的名称已更改为名为 的不受信任镜像mirrors.cloud.aliyuncs.com。这不是一个普通的 Ubuntu 镜像，当然也不会随 Ubuntu 系统的安装一起提供。该服务器此时甚至没有响应。

/etc/apt/sources.list您可以通过手动编辑 ; 中的每个*.list文件将其更改回受信任的镜像/etc/apt/sources.list.d。或使用图形实用程序software-properties-gtk，如@Raffa 推荐。

受信任的镜像通常是一个名为的 Web 服务器，xxx.ubuntu.com其中xxx是特定于您所在国家/地区的代码。

但是，安装某些内容后，请返回查看*.list文件并查看它们是否没有更改回来。如果您的系统以某种方式被黑客攻击，它可能会再次被黑客攻击。如果是这种情况，只有完全重新安装才是安全的。