MongoDB : couldn’t open /data/db/yourdb.ns errno:13 Permission denied

Starting MongoDB server, it shows error 「Permission denied」 on one of the database and shutdown the server automatically.mongodb

$ mongod
Fri Mar  8 22:54:46 [initandlisten] MongoDB starting : pid=13492 port=27017 dbpath=/data/db/ 64-bit host=Yongs-MacBook-Air.local //... Fri Mar 8 22:54:46 [initandlisten] journal dir=/data/db/journal Fri Mar 8 22:54:46 [initandlisten] recover : no journal files present, no recovery needed Fri Mar 8 22:54:46 [initandlisten] couldn't open /data/db/yourdb.ns errno:13 Permission denied Fri Mar 8 22:54:46 [initandlisten] error couldn't open file /data/db/yourdb.ns terminating Fri Mar 8 22:54:46 dbexit: Fri Mar 8 22:54:46 [initandlisten] shutdown: going to close listening sockets... Fri Mar 8 22:54:46 [initandlisten] shutdown: going to flush diaglog... Fri Mar 8 22:54:46 [initandlisten] shutdown: going to close sockets... Fri Mar 8 22:54:46 [initandlisten] shutdown: waiting for fs preallocator... Fri Mar 8 22:54:46 [initandlisten] shutdown: lock for final commit... Fri Mar 8 22:54:46 [initandlisten] shutdown: final commit... Fri Mar 8 22:54:46 [initandlisten] shutdown: closing all files... Fri Mar 8 22:54:46 [initandlisten] closeAllFiles() finished Fri Mar 8 22:54:46 [initandlisten] journalCleanup... Fri Mar 8 22:54:46 [initandlisten] removeJournalFiles Fri Mar 8 22:54:46 [initandlisten] shutdown: removing fs lock... Fri Mar 8 22:54:46 dbexit: really exiting now

Solution

The error message is showing that you do not have permission to access yourdb.ns database. Check the MongoDB data directory /data/db/ , the database yourdb.ns belongs to the root user.bash

$ ls -ls /data/db 0 drwxr-xr-x 2 mkyong wheel 68 Mar 8 22:54 journal 131072 -rw------- 1 root wheel 67108864 Mar 7 17:01 yourdb.0 262144 -rw------- 1 root wheel 134217728 Mar 7 16:15 yourdb.1 32768 -rw------- 1 root wheel 16777216 Mar 7 17:01 yourdb.ns $whoami mkyong

To fix it, assign permission to the database.socket

$ sudo chown -R mkyong /data/db $ ls -ls /data/db 0 drwxr-xr-x 2 mkyong wheel 68 Mar 8 22:54 journal 131072 -rw------- 1 mkyong wheel 67108864 Mar 7 17:01 yourdb.0 262144 -rw------- 1 mkyong wheel 134217728 Mar 7 16:15 yourdb.1 32768 -rw------- 1 mkyong wheel 16777216 Mar 7 17:01 yourdb.ns

轉自：post

http://www.mkyong.com/mongodb/mongodb-couldnt-open-datadbyourdb-ns-errno13-permission-denied/spa