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Install MongoDB 2.0.1 on Fedora 16/15, CentOS/Red Hat (RHEL) 6/5.7

Updated by JR on Nov 6, 2011 in CentOS, Featured, Fedora, Linux, Programs, Red Hat (RHEL), Server Guides, Servers | 20 comments

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What is MongoDB?

MongoDB (from “humongous”) is a scalable, high-performance, open source, schema-free, document-oriented database. Written in C++. MongoDB bridges the gap between key-value stores (which are fast and highly scalable) and traditional RDBMS systems (which provide structured schemas and powerful queries).

MongoDB is very interesting document-oriented database, because it has really awesome features:

Document-oriented storage (the simplicity and power of JSON-like data schemas)
Dynamic queries
Full index support, extending to inner-objects and embedded arrays
Query profiling
Fast, in-place updates
Efficient storage of binary data large objects (e.g. photos and videos)
Replication and fail-over support
Auto-sharding for cloud-level scalability
MapReduce for complex aggregation
Commercial Support, Training, and Consulting

This guide shows howto install MongoDB 2.0.1 on Fedora 16/15/14/13/12/11, CentOS 6/5.7 and Red Hat (RHEL) 6./6/5.7. Using MongoDB own YUM repositories. Fedora / CentOS / Red Hat (RHEL) RPM packages are currently available for x86 (32-bit) and x86_64 (64-bit) architectures.

1. Install MongoDB on Fedora 16/15/14/13/12/11, CentOS 6/5.7 and Red Hat (RHEL) 6/5.7

1.1 Change to root User

su -
## OR ##
sudo -i

1.2 Add and enable 10gen MongoDB repository

Select suitable repo for your system and add one of following to /etc/yum.repos.d/10gen-mongodb.repo

Mongodb-repo for Fedora 16/15/14/13/12/11, CentOS 6/5.7 and Red Hat (RHEL) 6.1/6/5.7 on i686 (32-bit)

[10gen]
name=10gen Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/i686
gpgcheck=0

Mongodb-repo for Fedora 16/15/14/13/12/11, CentOS 6/5.7 and Red Hat (RHEL) 6.1/6/5.7 on x86_64 (64-bit)

[10gen]
name=10gen Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64
gpgcheck=0

1.3 Install mongo server and mongo client packages

Install stable version of MongoDB

yum install mongo-10gen mongo-10gen-server

2. Configure MongoDB Database Server

2.1 Edit /etc/mongod.conf file:

nano -w /etc/mongod.conf

2.2 Check and set basic settings, before starting MongoDB (default settings are good)

logpath=/var/log/mongo/mongod.log
port=27017
dbpath=/var/lib/mongo

2.3 Start MongoDB Server

service mongod start
## OR ##
/etc/init.d/mongod start

2.4 Start MongoDB on boot

chkconfig --levels 235 mongod on

3. Test MongoDB Server

3.1 Open MongoDB Command Line Client

mongo

3.2 Save, Update and Find Some Test Data on MongoDB

> use test
switched to db test
> db.foo.find()
> db.foo.save({a: 1})
> db.foo.find()
{ "_id" : ObjectId("4b8ed53c4f450867bb35a1a9"), "a" : 1 }
> db.foo.update( {a: 1}, {a: 5})
> db.foo.find()
{ "_id" : ObjectId("4b8ed53c4f450867bb35a1a9"), "a" : 5 }

4. Open MongoDB Port (27017) on Iptables Firewall (as root user again)

Edit /etc/sysconfig/iptables file:

nano -w /etc/sysconfig/iptables

4.1 Add following line before COMMIT:

-A INPUT -m state --state NEW -m tcp -p tcp --dport 27017 -j ACCEPT

4.2 Restart Iptables Firewall:

service iptables restart
## OR ##
/etc/init.d/iptables restart

Note: Open MongoDB port only if you have enabled authentication or operating trusted environment.

4.3 Test remote connection

mongo server:port/database
## Example ##
mongo 10.0.10.45:27017/test

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20 Comments

Mark / May 12, 2010

I followed these instructions exactly, no errors or warnings from any of the commands, but the file /etc/sysconfig/mongod was never created. Do I need to create it manually? If so, what should the contents be? Thanks.

Reply
- JR / May 12, 2010
  
  Hi Mark,
  
  The /etc/sysconfig/mongod file should not be created.
  
  You possibly mean or try to find /etc/sysconfig/iptables, /etc/mongod.conf or /etc/init.d/mongod file?
  
  Reply
Ben Reyes / May 24, 2010

@JR/Mark The issue he referes to is this:

[root@main ~]# service mongod start
/etc/init.d/mongod: line 24: /etc/sysconfig/mongod: No such file or directory
Starting mongod: warning: some regex utf8 things will not work. pcre build doesn’t have –enable-unicode-properties
forked process: 13626
all output going to: /var/log/mongo/mongod.log
[root@main ~]# [ OK ]

Though it seems to start okay.

Reply
jd / August 10, 2010

/etc/init.d/mongod: line 25: /etc/sysconfig/mongod: No such file or directory
Starting mongod: runuser: user mongod does not exist

same

Reply
nana / August 13, 2010

/etc/init.d/mongod: line 25: /etc/sysconfig/mongod: No such file or directory
Starting mongod: runuser: user mongod does not exist

get this error on service mongod start

PLEASE HELP?

Reply
JR / August 16, 2010
Hi,

Everybody with following problem:

/etc/init.d/mongod: line 25: /etc/sysconfig/mongod: No such file or directory Starting mongod: runuser: user mongod does not exist

Old repositories caused this problem (they worked nice with 1.2.x versions, but not with 1.4.x versions and now this guide installs 1.6.x version), I updated this guide to use MongoDB own repositories and now I tested this new installation method on different systems and it worked smoothly.

So if you have old packages installed then simply remove them, with following command:

yum remove mongo mongo-server

And then follow this guide.
Reply
osgregs / November 12, 2010

tks

Reply
Colin / February 23, 2011

Thanks so much for this guide. I was really stuggling to install mongodb on centos5.5 until I followed these instruction. Amazing! Works great! Persistent connection that autostarts on server reboot – fantastic!

Only one thing – on the last step (4.2) I get this:

Flushing firewall rules: [ OK ]
Setting chains to policy ACCEPT: mangle filter nat [ OK ]
Unloading iptables modules: [ OK ]
Applying iptables firewall rules: iptables-restore: line 1 failed [FAILED]

Is this a problem? I added the line exactly as shown “-A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 27017 -j ACCEPT”

Thanks

Reply
Marc Castles / March 29, 2011

Thanks for this guide. It was very helpful. Just one thing.. I run whm/cpanel on my server and mongodb was throwing errors about memory all over the place. I managed to sort this by disabling “Shell Fork Bomb Protection”.

I was wondering if there is a way to enable fork bomb protection and keep mongo happy?

Reply
- JR / March 30, 2011
  
  Hi Marc,
  
  I’m not sure is it possible to use “Shell Fork Bomb Protection” simultaneously with MongoDB, but maybe you could use /etc/security/limits.conf file to limit certain users or groups processes, like following:
  
  <domain> <type> <item> <value> someuser hard nproc 20 @somegroup hard nproc 15
  
  Reply
Tilo / April 2, 2011

you might want to modify your /etc/init.d/mongod script as follows, to avoid mongod not being able to start if you have a different dbpath location in your config file:

add these two lines towards the top of the /etc/init.d/mongod file:

MONGO_DBPATH=`grep ‘^dbpath’ /etc/mongod.conf | cut -d’=’ -f2` # get dbpath from config
MONGO_LOCKFILE=”$MONGO_DBPATH/mongod.lock”

replace the line containing “killproc” with:

killproc -p $MONGO_LOCKFILE -t30 -TERM /usr/bin/mongod

Reply
- Karl Alfred / December 5, 2011
  
  hi tilo,
  
  Good Afternoon, when I used your instruction then after I restart mongod or check status I got this message. See below
  [root@ip-10-174-15-18 ~]# service mongod status
  cut: the delimiter must be a single character
  Try `cut –help’ for more information.
  [root@ip-10-174-15-18 ~]# /etc/init.d/mongod start
  cut: the delimiter must be a single character
  Try `cut –help’ for more information.
  Starting mongod: [ OK ]
  forked process: 22975
  
  please help thanks a lot..
  
  Reply
  - JR / December 5, 2011
    
    Hi Karl,
    
    I’m not Tilo and if you check Tilo’s comment time, I think that he’s not answering your question very soon.
    
    But yes, I’m not huge fan of custom hacks to init scripts, but I think that you just have “wrong” single quotes on you config, it should be:
    
    MONGO_DBPATH=`grep '^dbpath' /etc/mongod.conf | cut -d'=' -f2`
    
    Reply
Mae / May 19, 2011

Hi, i’m getting this error:

MongoDB shell version: 1.8.1
connecting to: 87.106.244.253:27017/test
Thu May 19 15:36:29 Error: couldn’t connect to server 87.106.244.253:27017 shell/mongo.js:81
exception: connect failed

Reply
Roberto Matos / July 12, 2011

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 27017 -j ACCEPT

This configuration is not working in my fedora 15. Someone clue what the problem is?

Reply
- JR / July 12, 2011
  
  Hi Roberto,
  
  Could you post your /etc/sysconfig/iptables file content?
  
  Reply
- shawn / August 10, 2011
  
  Please make sure the “accept” line is before “commit” line **AND** all “reject” lines.
  
  Reply
fajri / October 18, 2011

@colin you need to ensure that you add the chain on top of it on /etc/sysconfig/iptables config file.

like this :
# Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT ... -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 27017 -j ACCEPT COMMIT

Reply
Chillypenguin / November 14, 2011

Thank you for this guide. Works for me on CENTOS 6. I did not use your iptables command, as this is only accessed from the local host, so I can not confirm that working, but it looks sane.

Thanks!

Reply
osgregs / December 16, 2011

thks again

Reply

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