尝试安装任何 vagrant 插件时遇到问题。
vagrant plugin install vagrant-aws
vagrant plugin install vagrant-awsinfo
我最终得到的错误是：
Installing the 'vagrant-aws' plugin. This can take a few minutes...
Bundler, the underlying system Vagrant uses to install plugins,
reported an error. The error is shown below. These errors are usually
caused by misconfigured plugin installations or transient network
issues. The error from Bundler is:
Authentication is required for http://gems.hashicorp.com/.
Please supply credentials for this source. You can do this by running:
bundle config http://gems.hashicorp.com/ username:password
我在代理服务器后面。不确定这个问题是否与它有关。