I have created a REST Custom Sensor to Monitor our VPN Tunnels on a Palo Alto Firewall.

We have over 50 Tunnels so my question. Is it possible to just create the tunnels that startswith "at00" ?

Example from a Tunnel Name "name": "at00_vpn-de02:de02",

"result":	
[

	"valueLookup": "lookup-file",

	"value": {#1: $..({ @.name : lookup(@.state, "active","init","inactive") }).*

	},

}

Thanks for you help

Article Comments

Hello Philipp,

Thank you for your message.

I'm afraid that it's not possible to apply filter on the name via the template. Therefore, I invite you to use our EXE/Script, EXE/Script Advanced sensors instead.

Regarding custom sensors, please have a look to this manual: https://www.paessler.com/manuals/prtg/custom_sensors

Kind regards.


Nov, 2020 - Permalink

Hi and thanks for your reply,

is it possible to count all tunnels with one sensor and if the status of a tunnel goes to inactive an output via channel text will be displayed.


Nov, 2020 - Permalink

With a script, you can absolutely count the number of tunnel according to their status (Active/Down) and then, return the names of the tunnels in Down state in the sensor message field.

Therefore, if you monitor both channels mentioned above, you have to use the EXE/Script Advanced sensor. Here is the output you could return with the script into PRTG:

<prtg>
<result>
<channel>Active</channel>
<value></value>
</result>
<result>
<channel>Down</channel>
<value></value>
</result>
<text></text>
</prtg>

Then, for each channel you return the corresponding value, and add the name of each Down tunnel inside <text></text>.

Kind regards.


Nov, 2020 - Permalink

Hi, now i have got the right filter

"value": { "Tunnel "+ #2 +"": $..entry[60:68]({ @.name : lookup(@.state, "active","init","inactive")}).*}

Channels will be created with the Tunnel Name and there Status.


Nov, 2020 - Permalink

Hello Philipp,

As filtering by name is not possible, you can indeed match multiple children by using [<begin>:<end>] as you did. Thank you for sharing your template.

I just add the manual of the Rest Custom sensor as documentation for this article. The manual includes information on the JSON Path as well as functions available: https://www.paessler.com/manuals/prtg/rest_custom_sensor#jsonpath

Regards.


Nov, 2020 - Permalink