title: Mongod runs, but Mongo returns an error
body: <p>This question has been asked before but was never answered.  Furthermore, my error logs are slightly different:</p>
  
  <p>When I run 'mongo' I get this error:</p>
  
  <pre><code>MongoDB shell version: 2.2.0
  connecting to: test
  Fri Nov 16 10:52:05 Error: couldn't connect to server 127.0.0.1:27017 src/mongo/shell/mongo.js:91
  exception: connect failed
  </code></pre>
  
  <p>Here are my error logs:</p>
  
  <pre><code>Fri Nov 16 10:47:44 [initandlisten] MongoDB starting : pid=46508 port=27017     dbpath=/usr/local/var/mongodb 64-bit host=Brians-MacBook-Pro-2.local
  Fri Nov 16 10:47:44 [initandlisten] 
  Fri Nov 16 10:47:44 [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000
  Fri Nov 16 10:47:44 [initandlisten] db version v2.2.0, pdfile version 4.5
  Fri Nov 16 10:47:44 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207
  Fri Nov 16 10:47:44 [initandlisten] build info: Darwin bs-osx-106-x86-64-1.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386 BOOST_LIB_VERSION=1_49
  Fri Nov 16 10:47:44 [initandlisten] options: { bind_ip: "127.0.0.1", config: "/usr/local/etc/mongod.conf", dbpath: "/usr/local/var/mongodb", logappend: "true", logpath: "/usr/local/var/log/mongodb/mongo.log" }
  Fri Nov 16 10:47:44 [initandlisten] journal dir=/usr/local/var/mongodb/journal
  Fri Nov 16 10:47:44 [initandlisten] recover begin
  Fri Nov 16 10:47:44 [initandlisten] couldn't open /usr/local/var/mongodb/journal/lsn errno:13 Permission denied
  Fri Nov 16 10:47:44 [initandlisten]   Assertion failure f.is_open() src/mongo/db/dur_journal.cpp 552
  0x10037637b 0x1000b0196 0x100105ec2 0x10049de46 0x10049e445 0x10049e628 0x1002401ac     0x1000057ec 0x10000608d 0x10000d534 0x10000f309 0x100000ea4 0x3 
   0   mongod                              0x000000010037637b _ZN5mongo15printStackTraceERSo + 43
   1   mongod                              0x00000001000b0196 _ZN5mongo12verifyFailedEPKcS1_j + 310
   2   mongod                              0x0000000100105ec2 _ZN5mongo3dur14journalReadLSNEv + 898
   3   mongod                              0x000000010049de46 _ZN5mongo3dur11RecoveryJob2goERSt6vectorIN5boost11filesystem210basic_pathISsNS4_11path_traitsEEESaIS7_EE + 86
   4   mongod                              0x000000010049e445 _ZN5mongo3dur8_recoverEv + 405
   5   mongod                              0x000000010049e628 _ZN5mongo3dur7recoverEv + 40
   6   mongod                              0x00000001002401ac _ZN5mongo3dur7startupEv + 124
   7   mongod                              0x00000001000057ec _ZN5mongo14_initAndListenEi + 1052
   8   mongod                              0x000000010000608d _ZN5mongo13initAndListenEi + 29
   9   mongod                              0x000000010000d534 _ZL11mongoDbMainiPPc + 29348
   10  mongod                              0x000000010000f309 main + 9
   11  mongod                              0x0000000100000ea4 start + 52
   12  ???                                 0x0000000000000003 0x0 + 3
  Fri Nov 16 10:47:44 [initandlisten] dbexception during recovery: 13611 can't read lsn file in journal directory : assertion src/mongo/db/dur_journal.cpp:552
  Fri Nov 16 10:47:44 [initandlisten] exception in initAndListen: 13611 can't read lsn file in journal directory : assertion src/mongo/db/dur_journal.cpp:552, terminating
  Fri Nov 16 10:47:44 dbexit: 
  Fri Nov 16 10:47:44 [initandlisten] shutdown: going to close listening sockets...
  Fri Nov 16 10:47:44 [initandlisten] shutdown: going to flush diaglog...
  Fri Nov 16 10:47:44 [initandlisten] shutdown: going to close sockets...
  Fri Nov 16 10:47:44 [initandlisten] shutdown: waiting for fs preallocator...
  Fri Nov 16 10:47:44 [initandlisten] shutdown: lock for final commit...
  Fri Nov 16 10:47:44 [initandlisten] shutdown: final commit...
  Fri Nov 16 10:47:44 [initandlisten] shutdown: closing all files...
  Fri Nov 16 10:47:44 [initandlisten] closeAllFiles() finished
  Fri Nov 16 10:47:44 [initandlisten] shutdown: removing fs lock...
  Fri Nov 16 10:47:44 dbexit: really exiting now
  </code></pre>
  
  <p>There is no output when I run:</p>
  
  <pre><code>netstat -f inet -a -n | grep 27101
  </code></pre>
  
  <p>Thanks for your help!</p>