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Wondering if there is a way to have sensors from one Device control other devices. For example....High Availability. Two pieces of equipment with say SSH, but only one can be active at a time. Can I have SSH on device 2 unpause when SSH on device 1 goes down?

So far I can only make the dependency work within the same device.

Please advise.

Regards

dependency sensors

Created on Jul 25, 2014 11:26:27 PM



4 Replies

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Is SSH connectivity on the failover device only available when it steps in for the main device?

Created on Jul 28, 2014 12:58:41 PM by Stephan Linke [Paessler Support]



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Correct. SSH and HTTPS is not available on the Standby unit until it goes active and takes over for the primary unit.

Created on Jul 28, 2014 1:00:51 PM



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Okay, then you could create two notifications with a HTTP request. One to unpause the standby SSH sensor when the main SSH is down and one to unpause it when it comes up again:

[Pause Notification] http://<prtg-server>/api/pause.htm?id=<sensor-id>&pausemsg=ha-down&action=0&username=<prtguser>&passhash=<passhash>

[Unpause Notification] http://<prtg-server>/api/pause.htm?id=<sensor-id>action=1&username=<prtguser>&passhash=<passhash>

Then add the notification to the main SSH sensor:

  • When the sensor is in a down state for 5 seconds -> [unpause]
  • When condition clears -> [pause]

You can test it by right clicking the main SSH -> "Simulate Error Status". Tested it on my PRTG instance and worked like a charm :)

Created on Jul 28, 2014 1:23:12 PM by Stephan Linke [Paessler Support]

Last change on Jul 28, 2014 1:24:22 PM by Stephan Linke [Paessler Support]



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Thank you for the information. I am traveling today, but will give it a go later in the week when I am back in the office.

Created on Jul 28, 2014 1:38:42 PM




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