title: Failed to set up sockets during startup. dbexit: rc: 48 error in mongodb
body: <p>I updated mongo to version 3.2 now I am getting this error. Earlier I was not getting error. Only after updating mongo I am getting this error. I even tried to stop and start the mongod service again but still it is showing the same error.</p>
  
  <pre><code>rahul ~ $ mongod
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] MongoDB starting : pid=6630 port=27017 dbpath=/data/db 64-bit host=rahulcomp24-HP-ENVY-15-Notebook-PC
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] db version v3.2.0
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] git version: 45d947729a0315accb6d4f15a6b06be6d9c19fe7
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1f 6 Jan 2014
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] allocator: tcmalloc
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] modules: none
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] build environment:
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten]     distmod: ubuntu1404
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten]     distarch: x86_64
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten]     target_arch: x86_64
  2016-01-10T23:39:51.696+0530 I CONTROL  [initandlisten] options: {}
  2016-01-10T23:39:51.717+0530 E NETWORK  [initandlisten] listen(): bind() failed errno:98 Address already in use for socket: 0.0.0.0:27017
  2016-01-10T23:39:51.717+0530 E NETWORK  [initandlisten]   addr already in use
  2016-01-10T23:39:51.717+0530 E STORAGE  [initandlisten] Failed to set up sockets during startup.
  2016-01-10T23:39:51.717+0530 I CONTROL  [initandlisten] dbexit:  rc: 48
  </code></pre>
  
  <p>`</p>
  
  <pre><code>rahul ~ $ mongo
  MongoDB shell version: 3.2.0
  connecting to: test
  Server has startup warnings: 
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] 
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] 
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
  2016-01-10T23:38:16.095+0530 I CONTROL  [initandlisten] 
  </code></pre>