title: start redis with supervisor
body: <p>When start redis with supervisor, the redis process is running, but in supervisor it shows backoff.</p>
  
  <pre><code>vagrant@jinming:~$ sudo supervisorctl -c /etc/conf/supervisor/supervisord.conf
  redis                            BACKOFF   Exited too quickly (process log may have details)
  </code></pre>
  
  <p>in supervisor log, it shows below:</p>
  
  <pre><code>2015-06-09 07:09:28,407 CRIT Supervisor running as root (no user in config file)
  2015-06-09 07:09:28,407 WARN Included extra file "/etc/conf/supervisor/conf.d/redis_local.conf" during parsing
  2015-06-09 07:09:28,407 INFO RPC interface 'supervisor' initialized
  2015-06-09 07:09:28,407 CRIT Server 'unix_http_server' running without any HTTP authentication checking
  2015-06-09 07:09:28,407 INFO supervisord started with pid 23191
  2015-06-09 07:09:29,410 INFO spawned: 'redis' with pid 23332
  2015-06-09 07:09:29,416 INFO exited: redis (exit status 0; not expected)
  2015-06-09 07:09:30,418 INFO spawned: 'redis' with pid 23334
  2015-06-09 07:09:30,425 INFO exited: redis (exit status 0; not expected)
  2015-06-09 07:09:32,429 INFO spawned: 'redis' with pid 23336  
  2015-06-09 07:09:32,434 INFO exited: redis (exit status 0; not expected)
  2015-06-09 07:09:36,067 INFO spawned: 'redis' with pid 23342
  2015-06-09 07:09:36,072 INFO exited: redis (exit status 0; not expected)
  2015-06-09 07:09:37,073 INFO gave up: redis entered FATAL state, too many start retries too quickly
  2015-06-09 07:11:04,079 CRIT Supervisor running as root (no user in config file)
  2015-06-09 07:11:04,079 WARN Included extra file "/etc/conf/supervisor/conf.d/redis_local.conf" during parsing
  2015-06-09 07:11:04,080 INFO RPC interface 'supervisor' initialized
  2015-06-09 07:11:04,080 CRIT Server 'unix_http_server' running without any HTTP authentication checking
  2015-06-09 07:11:04,080 INFO supervisord started with pid 23191
  2015-06-09 07:11:05,083 INFO spawned: 'redis' with pid 23486
  2015-06-09 07:11:05,089 INFO exited: redis (exit status 0; not expected)
  </code></pre>
  
  <p>anyone can help me, thanks.</p>