Icinga2 integration of the Didactum monitoring system 50
Foreword
This documentation was created by Lorenz Schwartz as part of his IHK project work. This documentation describes the integration of the Didactum Monitoring System 50 into the network and into Icinga2. This is important for the administrator if additional devices of this type are to be used in Icinga2.
Integration of the Didactum Monitoring System 50 into the institute network
DHCP aktivieren
The existing monitoring systems are on the network and obtain their addresses via DHCP. This should also be the case for the Didactum Monitoring System 50. Therefore, ensure that DHCP is enabled in the web interface. The corresponding option must be checked. Furthermore, the chosen hostname (testcmc2) of the device must be entered. When saving and automatically restarting the device, ensure that it connects to the desired network in a timely manner, where it will obtain its address via DHCP. Of course, the device must first be registered on the network using its MAC address.
Testing the network connection
The network connection is tested for functionality using the "ping" command. Both the IP address and the hostname are tested. If integration into the network is successful, ICMP "Echo-Reply" packets from the Didactum system are returned to the sender in both cases.
SNMP configuration of the Didactum monitoring system
This section provides important information on the SNMPv3 configuration of the Didactum Monitoring System:
SNMP settings
The basic settings are as follows: SNMPv3 is configured, and a username is chosen for the SNMP user. The security level is set to "private" to ensure maximum security. An encryption algorithm must be used for both the authentication password and the private password. "MD5" should be used for the authentication password and "DES" for the private password. Both passwords should be at least 16 characters long.
Finally, the Didactum MIB must be loaded into a MIB browser to determine the OIDs for the temperature and humidity sensors. It is helpful to first check the current sensor values in the Didactum System 50 web interface under "Analog Sensors." Then, use an SNMPwalk to query the entire group in the MIB browser and extract the current values from the output on the website. Clicking on the values in the MIB browser will display the corresponding OID.