2016-01-11T11:01:43.652+0300 I -        [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2016-01-11T11:01:43.653+0300 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=8G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),
2016-01-11T11:01:43.653+0300 E STORAGE  [initandlisten] WiredTiger (13) [1452499303:653267][8634:0x7f39f108ddc0], wiredtiger_open: /var/lib/mongo/WiredTiger.lock: Permission denied
2016-01-11T11:01:43.653+0300 I -        [initandlisten] Assertion: 28595:13: Permission denied
2016-01-11T11:01:43.653+0300 I STORAGE  [initandlisten] exception in initAndListen: 28595 13: Permission denied, terminating
2016-01-11T11:01:43.653+0300 I CONTROL  [initandlisten] dbexit:  rc: 100