Icinga is an open-source monitoring system that allows monitoring of the availability and performance of network resources such as servers, applications, and services. In this tutorial, we will learn how to install Icinga on FreeBSD latest.
Before installing Icinga, ensure that you have the following prerequisites:
Firstly ensure that your system packages are up-to-date, run:
sudo pkg update
sudo pkg upgrade
Icinga requires several dependencies to function correctly. Use the following command to install the required dependencies:
sudo pkg install icinga2 icinga2-ido-pgsql icingacli nagios-plugins nrpe rrdtool postgresql12-server
Icinga2 requires a database to store monitoring data, logs and configuration. In this tutorial, we will use PostgreSQL as the database backend.
Execute the following command to initialize the PostgreSQL cluster:
sudo service postgresql initdb
Start and enable the PostgreSQL service:
sudo sysrc postgresql_enable=yes
sudo service postgresql start
Once the PostgreSQL service is running, create a new PostgreSQL database user and database for Icinga2 as follows:
sudo su - postgres
createuser -P icinga2
createdb -O icinga2 -E UTF8 icinga2db
We also have to enable the PostgreSQL service so it starts automatically in case of a reboot:
sudo sysrc postgresql_enable=yes
Icinga provides an extensible and powerful web interface for configuration and visualization of the monitoring system data.
To install the web interface, use the following command:
sudo pkg install icingaweb2
After installation navigate to the website directory by executing:
cd /usr/local/www/icingaweb2
Create a configuration file for the web interface:
cp etc/icingaweb2.example.ini etc/icingaweb2.ini
Additionally, we need to configure the web server to point to the Icinga2 directory:
sudo chown -R www:www /usr/local/www/icingaweb2
sudo sysrc icinga2_enable=yes
sudo chown -R icinga /var/run/icinga2
In this final step, we will configure Icinga to use PostgreSQL and connect to the web interface.
To connect to the database, open the Icinga2 configuration file:
sudo nano /usr/local/etc/icinga2/features-enabled/ido-pgsql.conf
Change the database credentials to match the user and password created in step 3:
object IdoPgsqlConnection "ido-pgsql" {
host = "localhost"
user = "icinga2"
/*password="icinga2"*/
database = "icinga2db"
// password = "icinga"
password = "PASSWORD"
/* O [...] */
}
Save and exit the file.
We also need to configure Icinga to communicate with the web interface. Open the Icinga2 configuration file:
sudo nano /usr/local/etc/icinga2/features-enabled/api.conf
Change the ticket_salt entry to a unique string:
object ApiListener "api" {
/* O [...] */
ticket_salt = "UNIQUE_STRING"
/* O [...] */
}
Finally, restart the Icinga2 service to apply the changes:
sudo service icinga2 restart
In this tutorial, we have successfully installed Icinga on FreeBSD Latest, configured PostgreSQL as the database backend, and installed the web interface to monitor the system resources. Additionally, we configured Icinga to connect with the PostgreSQL database and connect with the web interface. You can further configure your monitoring system depending on your needs.
If you want to self-host in an easy, hands free way, need an external IP address, or simply want your data in your own hands, give IPv6.rs a try!
Alternatively, for the best virtual desktop, try Shells!
