Monthly Archives: May 2020

icinga2 disable swap check

I had to disable swap check for one of my hosts.
This is how I’v done it.

nano /etc/icinga2/conf.d/services.conf
apply Service "swap" {
  import "generic-service"

  check_command = "swap"

  assign where == NodeName
  ignore where == "my_host"
service icinga2 restart

on icinga2 service.conf I’v added the following line ignore where == “my_host” and then restarted icinga2

Installing Icinga 2

Add the Icinga repository to your package management configuration

yum install

Error when icinga repository isn’t on our package management configuration

Install & start icinga2

yum install icinga2
systemctl enable icinga2
systemctl start icinga2

Install check plugins

yum install nagios-plugins-all

After this install you might have to reboot the server to ensure gnutls are properly updated.


Check SELinux status


Install icinca SELinux policy

yum install icinga2-selinux

Nano Syntax Highlighting

yum install nano-icinga2

Icinga Web 2

Install maria db

yum install mariadb-server mariadb
systemctl enable mariadb
systemctl start mariadb

Create & grant previleges

GRANT SELECT, INSERT, UPDATE, DELETE, DROP, CREATE VIEW, INDEX, EXECUTE ON icinga.* TO 'icinga'@'localhost' IDENTIFIED BY 'passswwwwooorrrddd';

Import mysql schema

mysql -u root -p icinga < /usr/share/icinga2-ido-mysql/schema/mysql.sql

Edit mysql confs

nano /etc/icinga2/features-available/ido-mysql.conf

Enable ido mysql

icinga2 feature enable ido-mysql
systemctl restart icinga2

Install web


yum install httpd
systemctl enable httpd
systemctl start httpd

(falta firewall / iptables)

Icinga 2 REST API

icinga2 api setup

It creates the root user & a auto-generated password

nano /etc/icinga2/conf.d/api-users.conf

Add icingaweb2 user

nano /etc/icinga2/conf.d/api-users.conf

Add the following code – be sure you change the password from this example

object ApiUser "icingaweb2" {
  permissions = [ "status/query", "actions/*", "objects/modify/*", "objects/query/*" ]

Installing Icinga Web 2

yum install centos-release-scl
yum install icingaweb2 icingacli

Enable PHP FPM

systemctl start rh-php71-php-fpm.service
systemctl enable rh-php71-php-fpm.service

Generate icinga token

icingacli setup token create

Restart httpd

service httpd restart

Icinga Web 2

You should be able to access icinga web 2, using your server ip address and /icingaweb2/

Setup token was previously generated, and you can see it using

icingacli setup token show

The directory /etc/icingaweb2 is not writable

chcon -R -t httpd_sys_rw_content_t /etc/icingaweb2/

You are using (probably) database icinga.
You need to create a new database (for example icinga_web2) with the proper user permissions,

Monitoring IDO Resource

User icinga (first table created) for Monitoring IDO Resource

mysql.schema.sql failed to open stream

You can find the mysql.schema.sql at
You can download and import the file to that location… or import through mysql.