Observium: Instalasi di Ubuntu

Kebutuhan System

Untuk menginstalasi Observium, diperlukan sebuah server yang masih baru di instalasi. Pengembangan Observium dilakukan di Ubuntu LTS dan Debian sistem, jadi disarankan untuk menginstal Observium pada Ubuntu atau Debian karena mungkin ada masalah dengan platform lain.

Artikel ini akan memandu anda tentang cara menginstal Observium pada Ubuntu 12.04. Untuk proses instalasi kecil Observium dianjurkan untuk menggunakan memori 256MB dan dual core.

Prasyarat Instalasi

Before installing Observium you need to make sure to install all dependencies.

First step is to update your server

sudo apt-get update

Then you need to install all packages required to run Observium.

Observuim need this list of software the run correctly:

• LAMP server
• fping
• Net-SNMP 5.4+
• RRDtool 1.3+
• Graphviz

Requirements for optional features:

   Ipmitool – Only if you want to poll IPMI baseboard controllers on servers
   Libvirt-bin – Only if you want to monitor remote VM hosts using libvirt

sudo apt-get install libapache2-mod-php5 php5-cli php5-mysql php5-gd php5-mcrypt \
php5-json php-pear snmp fping mysql-server mysql-client python-mysqldb rrdtool \
subversion whois mtr-tiny ipmitool graphviz imagemagick libvirt ipmitool

Creation MySQL Database and User for Observium

Now you need to log into MySQL and create database for Observuim:

mysql -u root -p

After successful authenticated, you need to create the database.

CREATE DATABASE observium;

The database Name is Observium. You will need this information later.

Now, you should create the database administrator.

CREATE USER observiumadmin@localhost IDENTIFIED BY 'observiumpassword';

Next, you need to give this user permissions to administer the database you created.

GRANT ALL PRIVILEGES ON observium.* TO observiumadmin@localhost;

You need to flush the privilege information to disk to activate the new MySQL user:

FLUSH PRIVILEGES;
exit

Downloading and Installing Observium

Now that our system is ready, we can start the installation of Observium.

First step to do is, creating the directory Observium is going to operate out of:

mkdir -p /opt/observium && cd /opt

For the purpose of this tutorial, we’re going to be using the Community/Open Source Edition of Observium. Download and unpack it.

wget http://www.observium.org/observium-community-latest.tar.gz
tar zxvf observium-community-latest.tar.gz

Now go under Observium directory

cd observium

Copy the default configuration file ‘config.php.default‘ to ‘config.php‘ and fill out the database config options:

cp config.php.default config.php
nano config.php

/ Database config
$config['db_host'] = 'localhost';
$config['db_user'] = 'observiumadmin';
$config['db_pass'] = 'observiumpassword';
$config['db_name'] = 'observium';

Let’s setup the default schema for the MySQL Database:

php includes/update/update.php

Now you need to create directory to store rrd file and change permission to let apache write into the file .

mkdir rrd
chown apache:apache rrd

To help you troubleshooting on case of problem, you need to create logs file.

mkdir -p /var/log/observium
chown apache:apache /var/log/observium

Now you have to create the virtual host configuration for Observium

<VirtualHost *:80>
  DocumentRoot /opt/observium/html/
  ServerName  observium.domain.com
  CustomLog /var/log/observium/access_log combined
  ErrorLog /var/log/observium/error_log
  <Directory "/opt/observium/html/">
   AllowOverride All
   Options FollowSymLinks MultiViews
  </Directory>
</VirtualHost>

Next, you need to enable rewrite functionality for your Apache server.

To enable mod_rewrite modules, type this command:

sudo a2enmod rewrite

This module will be enable the next after reboot of Apache service.

sudo service apache2 restart

Configuring Observium

Before log into the web interface, you need to create administrator account (level 10) to Observium

# cd /opt/observium
# ./adduser.php admin adminpassword 10 
User admin added successfully.

Next set a cron jobs for the discovery and the poller jobs, create a new file ‘/etc/cron.d/observium‘ and add the following contents.

33  */6   * * *   root    /opt/observium/discovery.php -h all >> /dev/null 2>&1
*/5 *      * * *   root    /opt/observium/discovery.php -h new >> /dev/null 2>&1
*/5 *      * * *   root    /opt/observium/poller-wrapper.py 1 >> /dev/null 2>&1

Reload cron process to take new entries.

# /etc/init.d/cron reload

You’ve installed Observium Server! Log into Observium using your browser http://<Server IP> and be on your way.

Referensi

• http://www.unixmen.com/monitoring-network-servers-observium/