问题
This is the error I get when I try to do a "gem install rails -v 4.1.0" using Ruby 2.1.1 and RVM.
ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError) bad response Service Unavailable 503 (http://api.rubygems.org/api/v1/dependencies?gems=activerecord)
Not sure what is causing this, anybody have any ideas?
回答1:
It would be a ssl problem.
Change your gem sources and try again.
gem sources --remove https://rubygems.org/
gem sources -a http://rubygems.org/
回答2:
Make sure your rvm ssl certificates are up to date.
Check their status
$ rvm osx-ssl-certs status all
Update them!
$ rvm osx-ssl-certs update all
Also try
gem install rails --include-dependencies
回答3:
Sometimes it is just a server problem.
I waited a few minutes and tried again and it worked.
来源：https://stackoverflow.com/questions/23351405/getting-a-while-executing-gem-gemremotefetcherfetcherror-503-error-whe