[HOW TO] Easy Install Nagios/Cacti/NPC Ubuntu 12.04

[HeWhoWas]

Hey All,

After many a day struggling with Nagios/NPC and Cacti, I've finally got it running. This guide will not give you the latest versions of everything, it will give you whatever is in the official repo's, along with an update cacti version that has the Plugin Arch built in. This is the "Get it working" guide.

Nagios, Cacti & Nagios Plugin for Cacti (NPC) Installation Guide - Ubuntu 12.04

Add updated cacti PPA to your system (This has plugin arch already built in, avoids a lot of hassle):

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sudo apt-add-repository ppa:paul-climbing/cacti

Edit the sources.list to point to the correct distro.

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sudo nano /etc/apt/sources.list.d/paul-climbing-cacti-precise.list

And change both instances of the word "precise" to "quantal".
Ctrl O to save. Ctrl X to exit.

Update apt:

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sudo apt-get update

Install the required packages:

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sudo apt-get install cacti cacti-spine
	sudo apt-get install nagios3 ndoutils-nagios3-mysql

Download and install the NPC Plugin:

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wget http://hewhowas.net/npc-2.0.4.tar.gz
	tar -xzf npc-2.0.4.tar.gz
	sudo mv npc /usr/share/cacti/site/plugins/

Configure NDOUtils:

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sudo nano /etc/nagios3/ndo2db.cfg

Change the following information:
db_name = cacti
db_prefix = npc_
db_user=cacti
db_pass=<Cacti MYSQL Password>

Configure Nagios:

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sudo nano /etc/nagios3/nagios.cfg

Append the following line under the "Broker" section:
broker_module=/usr/lib/ndoutils/ndomod-mysql-3x.o config_file=/etc/nagios3/ndomod.cfg
Enable external commands:
check_external_commands=1
Enable processing performance data:
process_performance_data=1
Ctrl+O to save
Ctrl+X to exit

Configure Cacti:
Open your web browser and go to http://HOSTNAME/cacti
Follow initial login wizard. Should be self explanatory, however if it's a new installation:
Click Next
Click Next
Check Everything says "OK" and there are no "Failed" errors - there shouldn't be if you've followed this guide!
If everything is "OK" click Finish. If not, install the missing components. If you run into trouble, post a comment here.
Login with the default details admin/admin, update the password when prompted.
Open "Plugin Management"
Install the NPC plugin, but DO NOT ENABLE IT YET.
Open "Settings -> Poller"
Change Poller Type to "Spine"
Click "Save"

Fix the databases (NPC plugin does not create them correctly):
Going back to the SSH terminal:
sudo mysql -uroot -p cacti
<Enter Password>

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ALTER TABLE `npc_hostchecks` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_hoststatus` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_servicechecks` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_servicestatus` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_statehistory` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_eventhandlers` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_systemcommands` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	ALTER TABLE `npc_notifications` ADD COLUMN `long_output` varchar(8192) NOT NULL default '' AFTER `output`;
	exit

Enable ndo2db:

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sudo nano /etc/default/ndoutils

ENABLE_NDOUTILS=1

Enable NPC:
Going back to http://HOSTNAME/cacti
Open "Plugin Management"
Enable the NPC Plugin.
Open "Settings -> NPC"
Put a check in "Remote Commands"
Enter "/var/lib/nagios3/rw/nagios.cmd" Nagios Command File Path
Choose your date format.
Click "Save"

Start/Restart Services:

Back to SSH Terminal

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sudo service nagios3 restart
sudo service ndoutils restart

Now, open up Cacti, and you should be good to go!

[cachorroyayo]

Hello
Where you download ndo2utils from?
I'm trying to configure in CentOS 6.3 with a nagios 3.4 downloaded from epel repository but I can't complete the process because I can't find some files or paths.


I will appreciate your help and advices.


best regards.


Atte.
Eduardo Mejia V.
Lima Peru

[bajangerry]

Hi,
Thanks for this great instruction!

[agnesresama]

i can't found table cacti.npc_hostchecks. I've followed the steps - steps above