WEBrick : 500 Internal Server Error : PRNG not seeded

В логах :
Status: 500 Internal Server Error
PRNG not seeded
/usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/secure_random.rb:68:in `random_bytes'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/secure_random.rb:68:in `random_bytes'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/secure_random.rb:136:in `hex'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_ext/session.rb:10:in `generate_unique_id'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_ext/session.rb:26:in `create_new_id'
/usr/lib/ruby/1.8/cgi/session.rb:267:in `initialize_without_cgi_reader'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_ext/session.rb:19:in `initialize'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_process.rb:94:in `new'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_process.rb:94:in `session'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_process.rb:130:in `stale_session_check!'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/cgi_process.rb:78:in `session'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:1205:in `assign_shortcuts_without_flash'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/flash.rb:166:in `assign_shortcuts'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:519:in `process_without_filters'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/filters.rb:606:in `process_without_session_management_support'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/session_management.rb:134:in `process'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/base.rb:392:in `process'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:183:in `handle_request'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:110:in `dispatch_unlocked'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:123:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:122:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:122:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:132:in `dispatch_cgi'
/usr/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/action_controller/dispatcher.rb:39:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/webrick_server.rb:103:in `handle_dispatch'
/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/webrick_server.rb:74:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:37:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start'
/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/webrick_server.rb:60:in `dispatch'
/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/servers/webrick.rb:66
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:153:in `require'
/usr/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/commands/server.rb:49
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
script/server:3

Решения:

  • Возможно нет прав на чтение для файлов.
    chmod 666 /dev/urandom /dev/random

    После перезапустить WEBrick