problem with svn+ssh authentication when excute deploy rails project on EC2 amazon server

i am trying to deploy my app rails hello_world from my svn to ec2 amazon server. i got trouble when excute deploy command:


- 1: i am using ec2 amazon for hosting and server like: ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com

- 2: i have 1 other server installed subversion (SVN) which store rails app (hello world) use for deploy to ec2 server (svn+ssh://root@yyy.yyy.yyy.yyy/svn/hello_world)

- 3: first.. on my depvelopment computer, i will excute command :"cap deploy:setup" and it will setup core for app hello_world on ec2 server.

       second: i will excute command "cap deploy" to deploy app hello_world from svn server to ec2 server
       problem occur here:
-----------------------------------------------------------
  * executing `deploy'
  * executing `deploy:update'
 ** transaction: start
  * executing `deploy:update_code'
    updating the cached checkout on all servers
root@yyy.yyy.yyy.yyy's password:
  * executing "if [ -d /usr/hello/shared/cached-copy ]; then svn update -q  -r398 /usr/hello/shared/cached-copy; else svn checkout -q  -r398 svn+ssh://root@yyy.yyy.yyy.yyy/svn/hello_world /usr/hello/shared/cached-copy; fi"
    servers: ["ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com"]
    [ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com] executing command
 ** [err] reverse mapping checking getaddrinfo for yyy.yyy.yyy.yyy.com [yyy.yyy.yyy.yyy] failed - POSSIBLE BREAK-IN ATTEMPT!
 ** [err] Permission denied, please try again.
 ** [err] Permission denied, please try again.
 ** [err] Permission denied (publickey,gssapi-with-mic,password).
 ** [err] svn: Connection closed unexpectedly
    command finished
*** [deploy:update_code] rolling back
  * executing "rm -rf /usr/hello/releases/20090223091608; true"
    servers: ["ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com"]
    [ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com] executing command
    command finished
command "if [ -d /usr/hello/shared/cached-copy ]; then svn update -q  -r398 /usr/hello/shared/cached-copy; else svn checkout -q  -r398 svn+ssh://root@yyy.yyy.yyy.yyy/svn/hello_world /usr/hello/shared/cached-copy; fi" failed on ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com


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i tried to ssh to ec2 server and do command "svn co svn+ssh://root@yyy.yyy.yyy.yyy/svn/hello_world"
and it asking for enter password twice times. after that, it 's ok, i think problem in here

addition infor, i can stand on ec2 server to ssh to my svn server contains  rails app

and below is deploy.rb file use for deploy.

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set :application, "hello"
set :svn_repository_home, "hello_world"
 
## Servers 
 
set :use_sudo, false  
ssh_options[:keys] = ["~/.ssh/id_rsa-gsp-keypair"]
set :domain, "ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com"
set :rails_env, "production"
set :group_writable, false
 
role :web,      "ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com"
role :app,      "ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com"
role :memcache, "ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com"
role :db,       "ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com", :primary => true
 
## Subversion
 
set :scm, :subversion
set :scm_user, "root"   # Sets 'my_svn_user' instead, if you are using different name than your app.
set :scm_password, Proc.new { Capistrano::CLI.password_prompt("SCM password for #{scm_user}:") }
set :repository,  "svn+ssh://root@yyy.yyy.yyy.yyy/svn/hello_world"
set :scm_auth_cache, true  # Prompts for password once
set :deploy_to, "/var/www/apps/"
# keeps a local checkout of the repository on the server to get faster deployments
set :deploy_via, :remote_cache
 
## Tasks
 
namespace :deploy do
  desc "Restart Application (using tmp/restart.txt)"
  task :restart_passenger do
    run "touch #{current_path}/tmp/restart.txt"
  end
 
  desc "Restarts your application."
  task :restart do
    restart_passenger
  end
 
  desc "Link shared files"
  #task :before_symlink do
  before :symlink do
    run "rm -drf #{release_path}/public/uploads"
    run "ln -s #{shared_path}/uploads #{release_path}/public/uploads"
    run "rm -f #{release_path}/config/database.yml"
    run "ln -s #{shared_path}/database.yml #{release_path}/config/database.yml"
  end
end