Ruby on Rails

1. I build http://SOME.example.com  and http://OTHER.example.com on the server SOME.example.com.
    useing  nginx unicorn RoR Device
2. For the clone, http://SOME_CLONE.example.com  and http://OTHER_CLONE.example.com are builed on the server SOME_CLONE.example.com
3. Only SOME.example.com is defined on DNS, others are on the /etc/hosts

3 of 4 domains work well, but SOME_CLONE works strange

1. when  access 'needs authenticate page' , redirected to SOME/users/sign-in, not to SOME_CLONE/users/sign-in
2. Explicitly access to  SOME_CLONE/users/sign-in, can access to SOME_CLONE and later accesses reach to SOME_CLONE

3. when access SOME_CLONE/foo, access_log s are
   SOME_CLONE/Rails.root/log/product  " Started GET "/foo" " and "Completed 401 Unauthorized  "
   SOME_CLONE/access/log                   /foo(status is 302)
   SOME_/access/log                              /users/sign-in

how can i resolve

Thanks