mac mongoldb

2015-11-25T17:27:19.540+0800 I STORAGE [initandlisten] exception in initAndListen: 98 Unable to create/open lock file: /data/db/mongod.lock errno:13 Permission denied Is a mongod instance already running?, terminating 2015-11-25T17:27:19.540+0800 I CONTROL [initandlisten] dbexit: rc: 100

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