Mongodb can't start

Question

today I updated my Mongo.. mongodb-stable (from 10gen repo)

but my service has down. the following command not working

$ sudo service mongodb start
         


        

Answer 1

Running Ubuntu 11.10 confirm you have the latest version of MongoDB:

$ mongod --version

db version v2.2.0

(If you don't have the latest version of MongoDB, follow the Ubuntu Installation instructions at: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/)

First confirm that the mongodb user/group has permission to write to the data directory:

$ sudo chown -R mongodb:mongodb /var/lib/mongodb/.

Start up MongoDB as a Daemon (background process) using the following command:

$ mongod --fork --dbpath /var/lib/mongodb/ --smallfiles --logpath /var/log/mongodb.log --logappend

To Shut Down MongoDB enter the Mongo CLI, access the admin and issue the shutdown command:

$ ./mongo

> use admin

> db.shutdownServer()

See: http://www.mongodb.org/display/DOCS/Starting+and+Stopping+Mongo

Answer 2

you should have mentioned which LINUX distribution and version you are using..

works fine for me on Fedora 13 and 14:

# service mongod status
mongod (pid 6403) is running...
# service mongod stop
Stopping mongod:                                           [  OK  ]
# service mongod start
Starting mongod: forked process: 7131
all output going to: /data/mongo/log/mongod.log
                                                               [  OK  ]

what is the output of " chkconfig | grep mongo " on your system?

if you don't get any output from the command above, then you still need to correctly configure mongod as a service with "chkconfig" (see 'man chkconfig')

e.g.:

chkconfig --add mongod
chkconfig --level 35 mongod on

afterwards you should get this output:

# chkconfig | grep mongo
mongod          0:off   1:off   2:off   3:on    4:off   5:on    6:off

# service mongod status
mongod (pid 6403) is running...

Answer 3

Bug has been reported and fixed.

https://jira.mongodb.org/browse/SERVER-2200

$ sudo apt-get purge mongodb-stable 
$ sudo apt-get install mongodb-stable 
(remove the lock file if present in /var/lib/mongodb)  
$ sudo init 6 

Then edit /etc/init/mongodb.conf removing the line "limit nofile 20000"

$ sudo vi /etc/init/mongodb.conf 
$ sudo service mongodb start
mongodb start/running, process 2351

Worked.

Answer 4

If process is not running but you still get this exeption - just delete "mongodb.lock" file in your mongodb/data folder

Answer 5

I run ubuntu server 10.04 minimal installation in a chroot environment. I always have same massage even after I executed the above. Only the following sudo mongod -f /etc/mongodb.conf works, any hints?

Answer 6

In shell launching $ mongo and # mongo I was able to find out that

• /data/db is not present
  sudo mkdir -p /data/db
• mongod is now an upstart
  sudo start --system mongod

(valid for Ubuntu 14.04 trusty)