Installing the Observium on Ubuntu to monitor network.

Install Observium on Ubuntu 18.04

(Step-by-Step Guide)

Observium: A Complete Network Management and Monitoring System. It is a PHP/MySQL driven Network Observation and Monitoring application, that supports a wide range of operating systems/hardware platforms including, Linux, Windows, FreeBSD, Cisco, HP, Dell, NetApp and more. Observium is powered by PHP, MariaDB and Nginx /Apache webserver.

Let’s kick off by ensuring all these dependencies are installed on our Ubuntu 18.04 system.

Step 1: Install PHP and required modules

Ubuntu 18.04 has PHP 7.2 in its repositories. Install it by running the commands below on your terminal:

  • sudo apt-get -y install wget php php-pear php-cgi php-common php-curl \

php-mbstring php-gd php-mysql php-gettext php-bcmath \

php-imap php-json php-xml php-snmp php-fpm php-zip

To confirm the php version installed, use the command php -v

  • php -v

PHP 7.2.8 (cli) (built: Jul 17 2018 09:50:46) ( NTS )

Copyright (c) 1997-2018 The PHP Group

Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies

Configure and Start PHP-FPM

Ensure date.timezone is set in php.ini to your preferred time zone:

Edit both files:

  • sudo vim /etc/php/7.2/fpm/php.ini
  • sudo vim /etc/php/7.2/cli/php.ini

Change date.timezone under [Date] section:

[Date]

; Defines the default timezone used by the date functions

; http://php.net/date.timezone

date.timezone = Africa/Nairobi

Restart php fpm:

  • sudo systemctl restart php7.2-fpm.service

Step 2: Install Nginx Web Server

(NginX is a web server, which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache)

For this setup, we will use Nginx as a web server for Observium, install it by running:

  • sudo apt-get install nginx

Ensure it is enabled to start on boot:

  • sudo systemctl enable nginx
Step 3: Install and configure MariaDB.
Follow the guide below to Installing MariaDB on Ubuntu 18.04

To install MariaDB on Ubuntu 18.04, follow these steps:

  1. Update packages index.
  • sudo apt update
  1. Once the packages list is updated, install MariaDB by issuing the following command
  • sudo apt install mariadb-server
  1. The MariaDB service will start automatically. You can verify it by typing:
  • sudo systemctl status mariadb 

OUTPUT

mariadb.service – MariaDB database serverLoaded: loaded (/lib/systemd/system/mariadb.service; enabled; vendor presetActive: active (running) since Sun 2020-05-12 11:31:31 UTC; 38s agoMain PID: 13932 (mysqld)Status: “Taking your SQL requests now…”    Tasks: 27 (limit: 507)CGroup: /system.slice/mariadb.service └─13932 /usr/sbin/mysqld

You can also check the MariaDB version with:

  • mysql –V

OUTPUT

mysql  Ver 15.1 Distrib 10.1.29-MariaDB

Once you’re done with the installation, create database and user for Observium.

Observium is not fully compatible with MySQL strict mode, for now, please disable this after mysql is installed.

  • sudo vim /etc/mysql/mariadb.cnf

Within the [mysqld] section please add:

innodb_file_per_table=1

sql-mode=””

lower_case_table_names=0

Then restart mysql

  • sudo systemctl restart mysql

Once database server has been installed and configured, you need to create a database for Observium.

create database observium;

grant all privileges on observium.* to observium@localhost IDENTIFIED by “StrongPassword”;

flush privileges;

quit

Step 4: Download and Install Observium

Install wget:

  • sudo apt-get install wget

Add observium system user:

  • sudo useradd -r -M -d /opt/observium observium

Now add this user to web user group www-data

  • sudo usermod -a -G observium www-data

When done. Proceed to install packages required by Observium

  • sudo apt-get update
  • sudo apt install rrdtool whois fping imagemagick graphviz \

mtr-tiny nmap python-mysqldb snmp snmpd python-memcache mtr-tiny acl

Download the latest Observium Community edition and extract it.

Change to the observium directory and create a config file.

  • sudo cp /opt/observium/config.php.default /opt/observium/config.php

Edit the file to set database connection:

  • sudo vim /opt/observium/config.php

Set like below:

/ Database config — This MUST be configured

$config[‘db_extension’] = ‘mysqli’;

$config[‘db_host’] = ‘localhost’;

$config[‘db_user’] = ‘observium’;

$config[‘db_pass’] = ‘StrongPassword’;

$config[‘db_name’] = ‘observium’;

Create rrd and logs directory.

  • sudo mkdir /opt/observium/{rrd,logs}

Change permission of the directory:

  • sudo chown -R observium:observium /opt/observium/
  • sudo chmod -R 775 /opt/observium/
Configure snmpd

Copy snmpd sample file:

  • sudo cp /opt/observium/snmpd.conf.example /etc/snmp/snmpd.conf

Configure String

  • sudo vim /etc/snmp/snmpd.conf

com2sec readonly  default         0bs3rv1um

Restart snmpd
  • sudo systemctl restart snmpd
Step 5: Configure Nginx

Let’s create the VirtualHost definition for Nginx to load Observium web interface:

 $ sudo vim /etc/nginx/conf.d/observium.conf

server {

 listen      80;

 server_name observium.example.com;

 root        /opt/observium/html;

 index       index.php;

charset utf-8;

 gzip on;

 gzip_types text/css application/javascript text/javascript application/x-javascript image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon;

 location / {

  try_files $uri $uri/ /index.php?$query_string;

 }

 location /api/v0 {

  try_files $uri $uri/ /api_v0.php?$query_string;

 }

 location ~ \.php {

  include fastcgi.conf;

  fastcgi_split_path_info ^(.+\.php)(/.+)$;

  fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;

 }

 location ~ /\.ht {

  deny all;

 }

}

Check syntax:

  • $ sudo nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: configuration file /etc/nginx/nginx.conf test is successful

if all is okay, restart nginx:
  • sudo systemctl restart Nginx
Step 6: Configure Observium on Web UI

Import MySQL scheme :

  • cd /opt/observium

./discovery.php -u

Add admin user:

Add a user for accessing the Observium portal. You can add more than one user.

  • # cd /opt/observium
  • # ./adduser.php admin AdminPass 10

Observium CE 17.9.0

Add User

User admin added successfully.

  •  ./adduser.php violet password 10

Observium CE 17.9.0

Add User

User violet added successfully.

10 is the highest level of access

Now open your web browser and start the installer:

http://observium.example.com

Congratulation, at this point you have observium installed on your server and you are ready to monitor devices such as servers, switches routers or physical machines on your network. In the next article, we shall learn how to use observium to monitor devices on your network.

Reference

https://computingforgeeks.com/how-to-install-observium-on-ubuntu-18-04-lts-with-nginx/

 

 

Page Visit Counter 254
Total Page Visits: 479 - Today Page Visits: 3

About the author

Violet

View all posts