Introduction
Today we will be installing Observium.
Observium is a Network Management and Monitoring System that collects data from multiple devices using SNMP and allows you to monitor all of the networks devices via an easy to use interface. It is PHP-based and uses a MySQL database to store data.
Note
This guide works with Ubuntu 13.10 to 15.04 and Debian 7.
Install
Connect to your server via SSH
ssh [email protected]
Install Dependencies
sudo apt-get -y 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
Enter the Mysql password for the root user. Note: For security make this one different than your server's password, and try not to use this user in any application that requires a database to store and pull data from.
Download and Extract Observium
sudo mkdir -p /opt/observium
cd /opt
sudo wget http://www.observium.org/observium-community-latest.tar.gz
sudo tar zxvf observium-community-latest.tar.gz
Configuration
create the MYSQL database and user
Enter your MySQL password that you gave the root user from before
mysql -u root -p
Once in MySQL enter the following commands to create the database, the user and to allow the user access to the database.
CREATE DATABASE observium DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
Make sure to change the Observium database password with your own, you will need this in the next step.
GRANT ALL PRIVILEGES ON observium.* TO 'observium'@'localhost' IDENTIFIED BY 'observium db password';
exit
Changing the config file
cd observium
sudo cp config.php.default config.php
Change the setting on the config.php to reflect your systems settings
sudo nano config.php
Set the username and password on the observium config file and an email address for alerts to get sent to.
<?php
## Check http://www.observium.org/wiki/Configuration_Options for documentation of these settings
// Database config --- This MUST be configured
$config['db_host'] = 'localhost';
$config['db_user'] = 'USERNAME';//observium user that we created before
$config['db_pass'] = 'PASSWORD';//observium password thet you gave the observium user
$config['db_name'] = 'observium';
// Base directory
$config['install_dir'] = "/opt/observium";
// Default community list to use when adding/discovering
$config['snmp']['community'] = array("public");
// Authentication Model
$config['auth_mechanism'] = "mysql"; // default, other options: ldap, http-auth, please see documentati$
// Enable alerter (not available in CE)
#$config['poller-wrapper']['alerter'] = TRUE;
// Set up a default alerter (email to a single address)
$config['alerts']['alerter']['default']['descr'] = "Default Email Alert";
$config['alerts']['alerter']['default']['type'] = "email";
$config['alerts']['alerter']['default']['contact'] ="[email protected]";
$config['alerts']['alerter']['default']['enable'] = TRUE;
// End config.php
Control +X to write file in nano.
Run this script to Setup the MySQL database and insert the default schema:
./discovery.php -u
Create required directories
Directory where logs are stored
sudo mkdir logs
Directory for the round-robin database
sudo mkdir rrd
Give the apache user and group ownership of the directory
sudo chown www-data:www-data rrd
Configuring Apache web server
sudo nano /etc/apache2/sites-available/000-default.conf
Make the file look like this
```apache
ServerAdmin [email protected]
DocumentRoot /opt/observium/html
Options FollowSymLinks
AllowOverride None
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Require all granted
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
ServerSignature On
```
Enable php mcrypt module:
sudo php5enmod mcrypt
Enable mod_rewrite for Observium's cleaner URLs:
sudo a2enmod rewrite
Restart Apache
sudo service apache2 restart
Getting Started
Adding an Admin User
./adduser.php admin password 10
Adding your First SNMP enabled device to monitor
./add_device.php <hostname> <community> v2c
Note: if your internal network can't resolve hostnames, add them to your hosts file.
Adding the cron jobs
Create this cron file
sudo nano /etc/cron.d/observium
Add the following content inside. these jobs are required by Observium for Polling and Discovering Devices
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 2 >> /dev/null 2>&1
Finally Grant correct permissions to fping to fix unable to ping error
chmod +s /usr/bin/fping
That's It
Open The panel at and Login with the password you set earlier
http://Server-IP
