我刚刚在数据中心拥有一台运行 Ubuntu 14.10 的新服务器。我试图安装 FTP，sudo apt-get install vsftpd这给了我一个无法获取的错误，它告诉我运行sudo apt-get update。所以我尝试这样做，然后我收到以下错误消息。
csvuser@k2521s002:~$ sudo apt-get update
Ign http://security.ubuntu.com utopic-security InRelease
Ign http://archive.ubuntu.com utopic InRelease
Ign http://security.ubuntu.com utopic-security Release.gpg
Ign http://archive.ubuntu.com utopic-updates InRelease
Ign http://security.ubuntu.com utopic-security Release
Ign http://archive.ubuntu.com utopic Release.gpg
Ign http://archive.ubuntu.com utopic-updates Release.gpg
Ign http://archive.ubuntu.com utopic Release
Ign http://security.ubuntu.com utopic-security/main amd64 Packages/DiffIndex
Ign http://archive.ubuntu.com utopic-updates Release
Ign http://security.ubuntu.com utopic-security/universe amd64 Packages/DiffIndex
Ign http://archive.ubuntu.com utopic/main amd64 Packages/DiffIndex
Ign http://archive.ubuntu.com utopic/universe amd64 Packages/DiffIndex
Ign http://archive.ubuntu.com utopic-updates/main amd64 Packages/DiffIndex
Ign http://archive.ubuntu.com utopic-updates/universe amd64 Packages/DiffIndex
Err http://security.ubuntu.com utopic-security/main Sources
404 Not Found [IP: 91.189.91.13 80]
Err http://security.ubuntu.com utopic-security/universe Sources
404 Not Found [IP: 91.189.91.13 80]
Ign http://security.ubuntu.com utopic-security/main Translation-en_US
Ign http://security.ubuntu.com utopic-security/main Translation-en
Ign http://security.ubuntu.com utopic-security/universe Translation-en_US
Ign http://security.ubuntu.com utopic-security/universe Translation-en
Err http://security.ubuntu.com utopic-security/main amd64 Packages
404 Not Found [IP: 91.189.91.13 80]
Err http://security.ubuntu.com utopic-security/universe amd64 Packages
404 Not Found [IP: 91.189.91.13 80]
Err http://archive.ubuntu.com utopic/main Sources
404 Not Found [IP: 91.189.91.24 80]
Err http://archive.ubuntu.com utopic/universe Sources
404 Not Found [IP: 91.189.91.24 80]
Ign http://archive.ubuntu.com utopic/main Translation-en_US
Ign http://archive.ubuntu.com utopic/main Translation-en
Ign http://archive.ubuntu.com utopic/universe Translation-en_US
Ign http://archive.ubuntu.com utopic/universe Translation-en
Err http://archive.ubuntu.com utopic-updates/main Sources
404 Not Found [IP: 91.189.91.24 80]
Err http://archive.ubuntu.com utopic-updates/universe Sources
404 Not Found [IP: 91.189.91.24 80]
Ign http://archive.ubuntu.com utopic-updates/main Translation-en_US
Ign http://archive.ubuntu.com utopic-updates/main Translation-en
Ign http://archive.ubuntu.com utopic-updates/universe Translation-en_US
Ign http://archive.ubuntu.com utopic-updates/universe Translation-en
Err http://archive.ubuntu.com utopic/main amd64 Packages
404 Not Found [IP: 91.189.91.24 80]
Err http://archive.ubuntu.com utopic/universe amd64 Packages
404 Not Found [IP: 91.189.91.24 80]
Err http://archive.ubuntu.com utopic-updates/main amd64 Packages
404 Not Found [IP: 91.189.91.24 80]
Err http://archive.ubuntu.com utopic-updates/universe amd64 Packages
404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/main/source/Sources 404 Not Found [IP: 91.189.91.13 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/universe/source/Sources 404 Not Found [IP: 91.189.91.13 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic/main/source/Sources 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic/universe/source/Sources 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/main/binary-amd64/Packages 404 Not Found [IP: 91.189.91.13 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic-updates/main/source/Sources 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic-updates/universe/source/Sources 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/utopic-security/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.91.13 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic/main/binary-amd64/Packages 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic-updates/main/binary-amd64/Packages 404 Not Found [IP: 91.189.91.24 80]
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/utopic-updates/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.91.24 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.我做了一些研究，但无法真正找到解决方案。谢谢！
编辑1：我尝试安装的所有东西都会给我这个
404 Not Found [IP: 91.189.88.149 80]
错误。它在 ubuntu 网站上找不到某些文件。