Monitoring Systems

Observium Monitoring System

General information

  • Site: https://www.observium.org/ .
  • The good thing is that it requires virtually no setup. Works out of the box.
  • Observium is available in two versions:
    • free Community (released once every 6 months);
    • paid Professional ;
    • paid Enterprise .
  • Observium Community is only suitable for services that are not critical to response time, since devices are polled via SNMP once every 5 minutes.
  • The paid version includes an Alarms module.
  • Devices are polled using the SNMP protocol.
  • Ideal for monitoring switching equipment.

Connecting devices

  • To add a Cisco router, just set the SNMP community:

    snmp-server community public RO

  • Adding devices to Observium is carried out either through the web interface menu (Devices->Add device), or from the server command line (from the Observium directory ):

    ./add_device.php hostname

Operating principles

  • Statistics collection is divided into 2 main processes:
    • discovery: Performs basic discovery of sensors supported on this device.
    • poller: Poll devices every 5 minutes.
  • In the version for subscribers there are 2 more additional processes that work in conjunction with the process poller:
    • bill: calculation of billing information on individual ports for users;
    • alert: generation of notifications based on parameters collected by the system.

Observium installation

We create directories in which the Observium files will be located:

sudo mkdir -p /opt/observium

Download the Community Edition :

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

Go to the folder with the configuration files and create a configuration file by copying the default file:

cd /optobservium
sudo cp config.php.default config.php

Opening the file config.php and edit MySQL settings: username, password, dbname.

Connecting to MySQL:

mysql -u root -p

Create a database with the name observium:

CREATE DATABASE observium DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

We give full privileges to the user observiumto the database of the same name:

GRANT ALL PRIVILEGES ON observium.* TO 'observium'@'localhost'IDENTIFIED BY 'PASSWORD';

We execute the configuration script for the previously created MySQL database:

/opt/observium/discovery.php -u

Create additional service directories:

mkdir /opt/observium/logs
mkdir /opt/observium/rrd

Create a file /etc/httpd/conf.d/observium.conf:

<VirtualHost \*>
DocumentRoot /opt/observium/html/
ServerName observium.domain.com
CustomLog /opt/observium/logs/access_log combined
ErrorLog /opt/observium/logs/error_log
<Directory "/opt/observium/html/">
AllowOverride All
Options FollowSymLinks MultiViews
Require all granted
</Directory>
</VirtualHost>

Create a file /etc/cron.d/observium:

# Run a complete discovery of all devices once every 6 hours

33 _/6 _ \* \* root /opt/observium/discovery.php -h all >> /dev/null 2>&1

# Run automated discovery of newly added devices every 5 minutes

_/5 _ \* \* \* root /opt/observium/discovery.php -h new >> /dev/null 2>&1

# Run multithreaded poller wrapper every 5 minutes

_/5 _ \* \* \* root /opt/observium/poller-wrapper.py >> /dev/null 2>&1

# Run housekeeping script daily for syslog, eventlog and alert log

13 5 \* \* \* root /opt/observium/housekeeping.php -ysel

# Run housekeeping script daily for rrds, ports, orphaned entries in the database and performance data

47 4 \* \* \* root /opt/observium/housekeeping.php -yrptb

To force device monitoring, you need to run the following commands:

/opt/observium/discovery.php -h all
/opt/observium/poller.php -h all

Observium update

Rename the old installation and download and extract the new one (all under user root):

cd /opt
mv observium observium_old
wget https://www.observium.org/observium-community-latest.tar.gz
tar zxvf observium-community-latest.tar.gz
mv /opt/observium_old/rrd observium/
mv /opt/observium_old/logs observium/
mv /opt/observium_old/config.php observium/

Correct permissions:

chown -R apache:apache /opt/observium

Update the BD schema:

/opt/observium/discovery.php -u

You can force immediate rediscovery of all devices:

/opt/observium/discovery.php -h all

You can delete the directory observium_old:

rm -rf observium_old

LibreNMS

https://yamadharma.github.io/ru/post/2023/03/20/librenms-monitoring-system/

Network Bandwidth & Speed Monitoring

https://yamadharma.github.io/ru/post/2023/06/16/bandwidth-network-speed-monitoring/