monitor kernel updates

[Andrej553]

Greetings,

i am new to zabbix. So far i really like it.
I installed a new Zabbix Server and added some hosts via agent or snmp.

Now i try to get some more data that aren't in the pre delivered templates.
In particular i search a convenient way to report the running Linux kernel and if there is an kernel update available.
Kind of the same would be nice for windows server.


I was not able to find a related thread via search. Neither was i able to find a current discussion on google (only one that is 11 years old). At least regarding the linux part.
For windows i found a script+template on github but i did not try it yet in hope to find a more built in solution.

Can you help me in that regard?

[Andrej553]

Found some help via discord.
I solved my problem with this little script:
#!/bin/bash -x

# Get current kernel version and the new version if there is one available
kernelVersion=$(uname -a)
checkIfKernelUpdateAvailable=$(dnf check-update | grep -i kernel)

# Use zabbix sender to send send those informations to our zabbix server at ZabbixServerIP
# Prior to do that we have to create a host and two custom items "zabbix trapper" with the corresponding key (like trap.KernelVersion)
zabbix_sender -z ZabbixServerIP -s Hostname -k trap.KernelVersion -o "$kernelVersion"
zabbix_sender -z ZabbixServerIP -s Hostname -k trap.KernelUpdate -o "$checkIfKernelUpdateAvailable"