我试图在没有互联网连接的Windows 7上安装vagrant-hostmanager插件。
我从rubygems.org下载了gem文件，并将此文件复制到D：\ distr \ Vagrant。
然后我移动到此文件夹并使用Ruby（具有管理员权限）在命令提示符下运行：
vagrant plugin install vagrant-hostmanager --entry-point vagrant-hostmanager-1.8.6.gem
并收到以下错误：
Installing the 'vagrant-hostmanager' plugin. This can take a few minutes...
Vagrant failed to load a configured plugin source. This can be caused
by a variety of issues including: transient connectivity issues, proxy
filtering rejecting access to a configured plugin source, or a configured
plugin source not responding correctly. Please review the error message
below to help resolve the issue:
Errno::ECONNREFUSED: No connection could be made because the target machine ac
tively refused it. - connect(2) for "api.rubygems.org" port 443 (https://api.rub
ygems.org/specs.4.8.gz)
Source: https://rubygems.org/
我也将specs.4.8.gz放到他的文件夹中，但它没有帮助。我还将specs.4.8放到SPEC CACHE DIRECTORY和gem文件到gem环境中定义的GEM PATHS。它也没有帮助。
版本：
Windows Enterprise Service Pack 1（32位）
vagrant_1.9.5.msi
的VirtualBox-5.1.22-115126-win.exe后
rubygems 2.5.2
rubyinstaller 2.3.3（2016-11-21 patchlevel 222）[i386-mingw32]
我还试过了另一个版本的vagrant和gem：vagrant_1.8.4.msi和vagrant-hostmanager-1.8.5.gem。结果是一样的。
是否可以离线安装vagrant插件？
谢谢！