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MongoDB service is not starting up - Fix it now
This article covers how to resolve the the problem of starting MongoDB server when running the command mongod which may arise due to file permission or ownership issues.
The reason was the dbpath variable in /etc/mongodb.conf.
To fix, you only had to change the owner of the /data/db directory recursively.
Also For ubunto , what made it happen and was real simple is to install mongodb package:
$sudo apt-get install mongodb
Also, You can use the below-mentioned command for mongodb service is not starting up:-
$sudo rm /var/lib/mongodb/mongod.lock
$mongod --repair
$sudo service mongodb start
Mongodb service is not starting up:
This can also happen if your file permissions get changed somehow.
Removing the lock file didn't help, and we were getting errors in the log file like:
2016-01-20T09:14:58.210-0800 [initandlisten] warning couldn't write to / rename file /var/lib/mongodb/journal/prealloc.0: couldn't open file /var/lib/mongodb/journal/prealloc.0 for writing errno:13 Permission denied
2016-01-20T09:14:58.288-0800 [initandlisten] couldn't open /var/lib/mongodb/local.ns errno:13 Permission denied
2016-01-20T09:14:58.288-0800 [initandlisten] error couldn't open file /var/lib/mongodb/local.ns terminating
So, went to check permissions:
ls -l /var/lib/mongodb
total 245780
drwxr-xr-x 2 mongodb mongodb 4096 Jan 20 09:14 journal
drwxr-xr-x 2 root root 4096 Jan 20 09:11 local
-rw------- 1 root root 67108864 Jan 20 09:11 local.0
-rw------- 1 root root 16777216 Jan 20 09:11 local.ns
-rwxr-xr-x 1 mongodb nogroup 0 Jan 20 09:14 mongod.lock
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