安裝 rails 失敗

root@yz00-Ideapad-Z460:~# gem source -r https://rubygems.org/
https://rubygems.org/ removed from sources
root@yz00-Ideapad-Z460:~# gem source -l
*** CURRENT SOURCES ***

root@yz00-Ideapad-Z460:~# gem source -a http://ruby.taobao.org
http://ruby.taobao.org added to sources
root@yz00-Ideapad-Z460:~# gem source -l
*** CURRENT SOURCES ***

http://ruby.taobao.org
root@yz00-Ideapad-Z460:~# gem install rails
Fetching: i18n-0.7.0.gem (100%)
Successfully installed i18n-0.7.0
Fetching: thread_safe-0.3.4.gem (100%)
Successfully installed thread_safe-0.3.4
Fetching: tzinfo-1.2.2.gem (100%)
Successfully installed tzinfo-1.2.2
Fetching: minitest-5.5.1.gem (100%)
Successfully installed minitest-5.5.1
Fetching: activesupport-4.2.0.gem (100%)
Successfully installed activesupport-4.2.0
Fetching: rack-1.6.0.gem (100%)
Successfully installed rack-1.6.0
Fetching: rack-test-0.6.3.gem (100%)
Successfully installed rack-test-0.6.3
Fetching: mini_portile-0.6.2.gem (100%)
Successfully installed mini_portile-0.6.2
Fetching: nokogiri-1.6.6.2.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.

/usr/local/bin/ruby -r ./siteconf20150213-4741-m4wolb.rb extconf.rb
checking if the C compiler accepts ... yes
Building nokogiri using packaged libraries.
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.

Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/local/bin/ruby
--help
--clean
--use-system-libraries
/usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in require': cannot load such file -- openssl (LoadError)
from /usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:inrequire'
from /usr/local/lib/ruby/2.1.0/net/https.rb:22:in <top (required)>'
from /usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:inrequire'
from /usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in require'
from /usr/local/lib/ruby/gems/2.1.0/gems/mini_portile-0.6.2/lib/mini_portile.rb:3:in<top (required)>'
from /usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:128:in require'
from /usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:128:inrescue in require'
from /usr/local/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:39:in require'
from extconf.rb:395:in<main>'

extconf failed, exit code 1

Gem files will remain installed in /usr/local/lib/ruby/gems/2.1.0/gems/nokogiri-1.6.6.2 for inspection.

Results logged to /usr/local/lib/ruby/gems/2.1.0/extensions/x86-linux/2.1.0-static/nokogiri-1.6.6.2/gem_make.out

ruby 沒有安裝好, 缺少了 openssl 庫.

建議, 先用 rvm 或者 rbenv 安裝 ruby.

再安裝 rails

ps: 不要用 root 用戶啊.