我刚刚从 13.10 升级到 14.04。升级后，NIS 停止工作。我进入，检查了设置（hosts, yp.conf, nsswitch）- 一切似乎都配置正确。但是...我找不到了/etc/init.d/nis。当我尝试安装 nis 时，我看到了以下内容：
root@crab:~# apt-get install nis
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package nis is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
hostname:i386 hostname
E: Package 'nis' has no installation candidate
以下是 的输出apt-cache policy：
Package files:
100 /var/lib/dpkg/status
release a=now
500 http://extras.ubuntu.com/ubuntu/ trusty/main i386 Packages
release v=14.04,o=LP-PPA-app-review- board,a=trusty,n=trusty,l=Application Review Board PPA,c=main
origin extras.ubuntu.com
500 http://extras.ubuntu.com/ubuntu/ trusty/main amd64 Packages
release v=14.04,o=LP-PPA-app-review- board,a=trusty,n=trusty,l=Application Review Board PPA,c=main
origin extras.ubuntu.com
500 http://archive.ubuntu.com/ubuntu/ trusty/main Translation-en
500 http://archive.ubuntu.com/ubuntu/ trusty/main i386 Packages
release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=main
origin archive.ubuntu.com
500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
release v=14.04,o=Ubuntu,a=trusty,n=trusty,l=Ubuntu,c=main
origin archive.ubuntu.com
Pinned packages:
有什么建议吗？谢谢。