ruby on rails 3 - Errno::EACCES: Permission denied @ rb_sysopen When installing gems wtih native extensions -

when

bundle install 

on ubuntu server. permission error gems uses native extensions. one.

installing json 1.8.3 native extensions  errno::eacces: permission denied @ rb_sysopen - /var/www/vhosts/my_application/httpdocs/my_application/gems/gems/json-1.8.3/tests/test_json.rb 

i have installed ruby 2.2.1 rvm , have local gemset user.

i guessing might problem regarding users permissions, don't know how fix it.

there need install. ruby-dev?

here info server.

rvm list  rvm rubies  =* ruby-2.2.1 [ x86_64 ]    ruby-2.2.1-dev [ x86_64 ]    ruby-2.2.4 [ x86_64 ]  # => - current # =* - current && default #  * - default  ruby -v ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]  bundler --version bundler version 1.11.2 

thanks!