Error with mongodb on mac permission denied

Question

Hi I have problem when I run

mongod

This is what I got

2016-02-09T21:54:40.631-0700 I -        [initandlisten] Detected data files in /data/db created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.

2016-02-09T21:54:40.633-0700 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
2016-02-09T21:54:40.633-0700 I CONTROL  [initandlisten] dbexit:  rc: 100

I try everything uninstall mongo. Install with brew. Uninstall with brew etc. Change the permission of my data folder and get always the same problem.

score 7 · Accepted Answer · answered Feb 10 '16 at 17:28

7

So this is what I did. I delete the /data/db folder after a recreate it with

sudo mkdir -p /data/db

Change the permission of data and db folder

mongod

everything working. My error was I didn't change the permission before I run mongod for the first time now everything is working fine.

answered Feb 10 '16 at 17:28

EQuimper

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I know this is old, but on newer macs it's changed: https://stackoverflow.com/questions/58283257/mongodb-cant-find-data-directory-after-upgrading-to-mac-os-10-15-catalina – lko Mar 15 '22 at 23:08

score 5 · Answer 2 · answered May 12 '17 at 12:20

5

I was having the same issues until I ran

sudo chown -R 'youruserid' /data/db

it seems some file(s) in the directory still had the wrong permissions.

answered May 12 '17 at 12:20

Benjamin Arthuys

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score 4 · Answer 3 · answered Feb 10 '16 at 05:47

4

I think I had a similar problem with my mongo install in my Mac. Have you tried changing the owner of /db/data?

You can check who owns this directory (where the databases are stored) by writing the following command in the terminal.

ls -al /data/db

If the owner (the name in the third column) is not your user, change it with a chown command or try running mongod with sudo.

answered Feb 10 '16 at 05:47

suecarmol

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`2016-02-09T22:50:54.575-0700 I CONTROL [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000` – EQuimper Feb 10 '16 at 05:53
If you are using mongo on your Mac for development purposes, then it's ok. You can check more at https://docs.mongodb.org/manual/reference/ulimit/ – suecarmol Feb 10 '16 at 15:32
I still suggest you change the owner of the /data/db directory. I do not recommend having to use sudo when you run the mongod command. – suecarmol Feb 10 '16 at 15:43

score 0 · Answer 4 · answered Feb 10 '16 at 05:05

0

I would first check to see if you have another instance of mongo running as it suggests. If you do not - remove the lock file in question and try to launch mongo again. It is possible the lock file is a remnant of a previous install.

answered Feb 10 '16 at 05:05

Jake Dempsey

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I try to find if another instance is running but didn't find nothing – EQuimper Feb 10 '16 at 05:10
Ok - so remove the lock file and try to start mongo. – Jake Dempsey Feb 10 '16 at 05:21
Done and the samething is wrote in the console – EQuimper Feb 10 '16 at 05:25
I check all my running program with 'top' and didnt find nothing about mongo – EQuimper Feb 10 '16 at 05:28
What kind of machine are on .. just curious.. Have you checked the permission of the dir in question /data/db – Jake Dempsey Feb 10 '16 at 05:28
So did the lock file exist in that location? If not, it could just be you need to make sure the mongo user has access to that dir..maybe with something like: chown mongodb:mongodb -R /data/db – Jake Dempsey Feb 10 '16 at 05:30
macbook pro when I 'ps aux | grep mongod' i see 6706 0.0 0.0 2444056 792 s003 S+ 10:49pm 0:00.00 grep mongod – EQuimper Feb 10 '16 at 05:49
I think you have a permission issue - You need to do a chown on the /data/db dir to give mongo permission to that dir. – Jake Dempsey Feb 10 '16 at 05:56

score -1 · Answer 5 · edited Mar 05 '18 at 12:29

-1

systemctl enable mongod.service
Start mongod service at system startup
service mongod start

edited Mar 05 '18 at 12:29

AlessioX

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answered Mar 05 '18 at 10:24

Vikul Kumar

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This is not a correct answer. `systemctl` and `service` have nothing to do with permission issues. – AlessioX Mar 05 '18 at 12:31

Error with mongodb on mac permission denied

5 Answers5