Mongo DB Installation in Linux :-

I have tried this on fedora-17,18 and CentOS release 5.7
1.Create a repo file in /etc/yum.repo.d/

vi /etc/yum.repos.d/10gen.repo
[10gen]
name=10gen Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
gpgcheck=0
enabled=1

2. Install mongo
yum install mongo-10gen mongo-10gen-server

3. Start Mongo Service.
/etc/init.d/mongod start


4. Use mongo
[root@fedora ~] mongo

Commands for create user in  Mongo:-
use admin;
db.addUser("username", "pass")
db.auth("username","password");