title: can't start mongodb as sudo
body: <p>mongodb is returning errors related to access files when trying to start:</p>
  
  <pre><code>root@mongo01:~# sudo service mongodb start
  mongodb start/running, process 4118
  root@mongo01:~# Mon Jul 25 17:03:54 [initandlisten] MongoDB starting : pid=4118 port=27017 dbpath=/var/lib/mongodb 64-bit 
  Mon Jul 25 17:03:54 [initandlisten] db version v1.8.2, pdfile version 4.5
  Mon Jul 25 17:03:54 [initandlisten] git version: 433bbaa14aaba6860da15bd4de8edf600f56501b
  Mon Jul 25 17:03:54 [initandlisten] build sys info: Linux bs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41
  Mon Jul 25 17:03:54 [initandlisten] couldn't open /var/lib/mongodb/adrise.ns errno:13 Permission denied
  Mon Jul 25 17:03:54 [initandlisten] error couldn't open file /var/lib/mongodb/adrise.ns terminating
  Mon Jul 25 17:03:54 dbexit: 
  Mon Jul 25 17:03:54 [initandlisten] shutdown: going to close listening sockets...
  Mon Jul 25 17:03:54 [initandlisten] shutdown: going to flush diaglog...
  Mon Jul 25 17:03:54 [initandlisten] shutdown: going to close sockets...
  Mon Jul 25 17:03:54 [initandlisten] shutdown: waiting for fs preallocator...
  Mon Jul 25 17:03:54 [initandlisten] shutdown: closing all files...
  Mon Jul 25 17:03:54 closeAllFiles() finished
  Mon Jul 25 17:03:54 [initandlisten] shutdown: removing fs lock...
  Mon Jul 25 17:03:54 dbexit: really exiting now
  </code></pre>
  
  <p>or</p>
  
  <pre><code>Mon Jul 25 17:03:22 [initandlisten] MongoDB starting : pid=4095 port=27017 dbpath=/var/lib/mongodb 64-bit 
  Mon Jul 25 17:03:22 [initandlisten] db version v1.8.2, pdfile version 4.5
  Mon Jul 25 17:03:22 [initandlisten] git version: 433bbaa14aaba6860da15bd4de8edf600f56501b
  Mon Jul 25 17:03:22 [initandlisten] build sys info: Linux bs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41
  Mon Jul 25 17:03:22 [initandlisten] journal dir=/var/lib/mongodb/journal
  Mon Jul 25 17:03:22 [initandlisten] recover : no journal files present, no recovery needed
  Mon Jul 25 17:03:22 [initandlisten] info preallocateIsFaster couldn't run; returning false
  Mon Jul 25 17:03:22 [initandlisten] exception in initAndListen std::exception: couldn't open file /var/lib/mongodb/journal/j._0 for writing errno:13 Permission denied, terminating
  Mon Jul 25 17:03:22 dbexit: 
  Mon Jul 25 17:03:22 [initandlisten] shutdown: going to close listening sockets...
  Mon Jul 25 17:03:22 [initandlisten] shutdown: going to flush diaglog...
  Mon Jul 25 17:03:22 [initandlisten] shutdown: going to close sockets...
  Mon Jul 25 17:03:22 [initandlisten] shutdown: waiting for fs preallocator...
  Mon Jul 25 17:03:22 [initandlisten] shutdown: lock for final commit...
  Mon Jul 25 17:03:22 [initandlisten] shutdown: final commit...
  Mon Jul 25 17:03:22 [initandlisten] shutdown: closing all files...
  Mon Jul 25 17:03:22 closeAllFiles() finished
  Mon Jul 25 17:03:22 [initandlisten] shutdown: journalCleanup...
  Mon Jul 25 17:03:22 [initandlisten] removeJournalFiles
  Mon Jul 25 17:03:22 [initandlisten] shutdown: removing fs lock...
  Mon Jul 25 17:03:22 dbexit: really exiting now
  </code></pre>
  
  <p>when I try :</p>
  
  <p>root@mongo01:~# mongodb -f /etc/mongodb.conf</p>
  
  <p>it starts properly, any idea what it causing the issues?</p>
  
  <p>Thanks</p>