ICMP Ping - any way to define the emitting interface?

[mumblesheep]

Hello Zabbixers,

I have three ethernet interfaces on my RaspberryPi - one connected to internal network, one to ISP A and one to ISP B.
I wrote a ping script myself but it is getting unwieldy now that I am starting to monitor more internal systems and I fancy leaving the difficult bits to Zabbix in future :0)

Alas... any internet search for "ping interface" finds many posts about the target host interface definitions. Is there a way to bend a template so that for each Ping I can decide which local interface the PICMP request should go out on?

Many thanks!
Mumblesheep

[troffasky]

Zabbix uses fping, which has a -I parameter, but this is not exposed:

https://www.zabbix.com/documentation/current/en/manual/config/items/itemtypes/simple_checks#icmpping

So you would have to write your own item.

https://www.zabbix.com/documentation/current/en/manual/config/items/userparameters

which would take the interface name as a parameter in addition. Should be pretty straightforward.

[mumblesheep]

Thank you - I will walk that path to knowledge!

[troffasky]

Zabbix uses fping, which has a -I parameter, but this is not exposed:

https://www.zabbix.com/documentation/current/en/manual/config/items/itemtypes/simple_checks#icmpping

So you would have to write your own item.

https://www.zabbix.com/documentation/current/en/manual/config/items/userparameters

which would take the interface name as a parameter in addition. Should be pretty straightforward.

[mumblesheep]

Thank you - I will walk that path to knowledge!

[Donkey]

What are you trying to achieve?

[troffasky]

They want to monitor specific destinations via a specific interface. And maybe even the same destination over multiple paths, to compare latency/packet loss/etc.

[mumblesheep]

He wants to ...

Who said this sheep was male? :P But you got me, I am :0)

monitor specific destinations via a specific interface. And maybe even the same destination over multiple paths, to compare latency/packet loss/etc.

- in the words of Detritus: "dat's der bunny!"