Position of the counter in px from the upper window edge
Position of the counter from the left window edge
Position of the border image in px from the upper and left window edge.
Time in ms within which the applet updates the measured value; adjust as needed.
The NAGIOS software running on Linux/Unix operating systems makes it possible to monitor complex IT structures. With the help of the following example Web-Thermographs can also be incorporated into the system.
For this example you need a Linux/Unix PC with Nagios software installed. You also need the Nagios plug-ins, since these contain the command check_snmp for the SNMP query. The PC must have a Web server and an SNMP daemon.
Do you not yet have a Web-Thermograph but would like to simply try one out like the example presented here?
No problem: We’ll send you the Web-Thermograph Pt100/Pt1000 at no charge for 30 days. Simply fill out the sample order form, and we’ll ship the Web-IO Analog-In for testing on an open invoice. If you return the unit within 30 days, we will credit the invoice in full.
assigned it an IP address - which with WuTility is no problem.
You have also
installed Nagios and the Nagios plug-ins on your PC
1. Activate SNMP
For the Web-Thermograph to be queried with SNMP, this function must first be enabled in the unit:
2. Configure NAGIOS
If NAGIOS is correctly installed on your PC, you can go to the Web page http://<computername>/nagios to find the start page of NAGIOS. First only the status of the local host is displayed.
3. Create configuration file
For the Web-Thermograph to be represented in NAGIOS, a configuration file must be created. This is usually stored in the directory /usr/local/nagios/etc/objects.
Create a file named thermo.cfg
First a definition for the device and a device group must be created:
define host {
use generic-host
host_name webgraph
alias Web-Thermograph
address
192.168.0.12
hostgroups
wut_devices
check_command check-host-alive max_check_attempts
3 }
define hostgroup{
hostgroup_name
wut_devices
alias
WuT Devices
members
webgraph
}
The most important parameters here are the IP address of the device and the host name which you want displayed in NAGIOS. The names of the group and the alias names will become visible in NAGIOS later.
To query the device via SNMP, a corresponding command must be created which uses the plug-in check_snmp to retrieve the measurement from the unit:
