Create a Service to test Eduroam Server Availability

Following guide will allow you to create a Icinga2 Director Service template to test eduroam freeradius installation by testing radius authentication connectivity from your monitoring server on Ubuntu 20.04.

Requirements

• Become root user. sudo su

• Install eap test and rad eap test packages on your Icinga monitoring server.

   
 apt-get install git libssl-dev devscripts pkg-config libnl-3-dev libnl-genl-3-dev
  
 cd ~

 git clone --depth 1 --no-single-branch https://github.com/FreeRADIUS/freeradius-server.git

 cd freeradius-server/scripts/ci/

 ./eapol_test-build.sh

 cp ./eapol_test/eapol_test /usr/local/bin/

 cd ~

 mkdir rad_eap_test

 cd rad_eap_test

 wget https://raw.githubusercontent.com/CESNET/rad_eap_test/master/rad_eap_test

 chmod +x rad_eap_test

 cp rad_eap_test /usr/local/bin/

• On your FreeRadius Server, add the monitoring IP as an client on /etc/freeradius/clients.conf or /etc/freeradius/3.0/clients.conf and restart the freeradius service.

     client monitor_icinga {
          ipaddr  = a.b.c.d
          secret  = <Shared_Secret>
     }

• Back on your Monitoring Server,

Test user auth by rad_eap_test -H <Freeradius_server_IP> -P 1812 -S <Shared_Secret> -u <username@YOUR-DOMAIN> -p <user_pass> -m WPA-EAP -e PEAP
You should receive an access-accept

• Next, download the monitoring plugin to icinga plugin directory ( we should use a script from REANNZ )

 cd /usr/lib/nagios/plugins

 wget https://raw.githubusercontent.com/REANNZ/etcbd/master/environment/icinga/content/usr/local/lib/nagios/plugins/check_eduroam_login.pl

 chmod 755 check_eduroam_login.pl

Director Configurations

You have to,

• Create custom Plugin Check Command
• Add required Arguments
• Create custom field Category
• Create custom fields
• Create a Service Template
• Create Host for the FreeRadius Server
• Create a Service and associate it with the created host

Create Custom Check Command

• Goto Director --> Commands --> +Add and create the Command eduroam-eap

• Goto Arguments tab of the eduroam-eap command and add following Arguments. ( Args marked in red arrows have to be created with special care )

Arguments marked in red have to be created as follows:

• Argument -C

• Argument -d

• Argument -v

• Argument -I

• Argument -O

• Finally, the command Preview should be similar to:

object CheckCommand "eduroam-eap" {
    import "plugin-check-command"
    command = [ PluginDir + "/check_eduroam_login.pl" ]
    arguments += {
        "-2" = "MSCHAPV2"
        "-C" = {
            set_if = "$eduroam_request_cui$"
        }
        "-H" = "$address$"
        "-I" = {
            description = "NAS IP address"
            set_if = {{
                return len(macro("$eduroam_nas_ip_address$")) >0
            }}
            value = "$eduroam_nas_ip_address$"
        }
        "-O" = {
            description = "Eduroam Operator Name"
            set_if = {{
                return len(macro("$eduroam_operator_name$")) >0
            }}
            value = "$eduroam_operator_name$"
        }
        "-P" = "$eduroam_port$"
        "-d" = {
            set_if = {{
                return macro("$eduroam_verbosity$") == 2
            }}
        }
        "-e" = "PEAP"
        "-m" = "WPA-EAP"
        "-p" = "$eduroam_password$"
        "-s" = "$eduroam_secret$"
        "-u" = "$eduroam_user$"
        "-v" = {
            set_if = {{
                return macro("$eduroam_verbosity$") == 1
            }}
        }
    }
}

• Deploy the changes.

Create Custom Fields

Since the new command eduroam-eap requires custom values as input arguments, we need to create them on Director

• Create a Field Category.

Go to Icinga Director --> Data Field Categories --> +Add

• Create Custom Data Fields.

Go to Icinga Director --> Data Fields --> +Add and create all following fields.

Field Name	Caption	Data Field Category	Data type
eduroam_request_cui	eduROAM Request CUI	eduROAM Specific Data	Boolean
eduroam_user	eduROAM UserName	eduROAM Specific Data	String / Visible
eduroam_verbosity	eduROAM verbosity	eduROAM Specific Data	Boolean
eduroam_operator_name	eduROAM Operator Name	eduROAM Specific Data	String / Visible
eduroam_password	eduROAM User Password	eduROAM Specific Data	String / Hidden
eduroam_port	Port	eduROAM Specific Data	Number
eduroam_secret	Shared Secret	eduROAM Specific Data	String / Hidden