Report downtime not accurate - export sensor data

Hi there,

Please let me know whether you added limits to your Senors so they change to the "Down" state if the device stops working?
Regarding the Event Log Sensor, which data you want to export? The real event logs or the channel data?

Hi Moritz,

Thanks for your reply. It is greatly appreciated.

I did not add limits to my sensors. I did enable notifications. Could you advise me on what channel I should put limits on so that they change to the "Down" state?

An example notification we get (which we also use to determine whether a system has had downtime) is:

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Sensor Probe Health (Probe Health) *

Machine A > Machine A>

Probe Device (10.121.xxx.xxx)

New Status at 11/19/2022 1:29:00 AM (W. Europe Standard Time): Down (before: Unknown) Last Message: Probe disconnected (Disconnected) Last Scan: Last Up: Last Down: Uptime: Downtime: Coverage: Sensor Type: Interval: 0 s 111 s 0 s 100.0000% 0.0000% 97% Probe Health 30 s

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This message leads me to believe I should put limits on the Probe Health Sensor, right? If so, what would the best settings be if I want EVERY disconnect to be counted as downtime?

Thanks again, Reno

Regarding the Event Log Sensor: I would like to export the channel data. I have a suspicion, though, it does not always catch the events I put a sensor on. Probably because of the disconnects I mentioned as well...

I look forward to hearing from you!

Thanks, Reno

Hi Reno,

Thank you for the info.

Regarding the limits, the Probe Health Sensor should be automatically in the "Down" state if the Probe is disconnected. You can validate this by checking the "Logs" tab of the Sensor.

To export data from Sensors, I would recommend to use either the "Historic Data" Tab of the Sensor or to use our API which is documented below "Setup > PRTG API".

Unfortunately, this does not seem to be the case. Here some extra details.

Please see the device sensor logs on pastebin:
https://pastebin.com/mDKtSNCW


Based on this data, we can deduce that there's a DOWNTIME of app. 13 hours (7.20 PM - 8.20 AM).

When I export the PROBE HEALTH data of this specific system, there is no DOWNTIME reported at all! Instead the disconnection is reported as UNKNOWN which is not acceptable for me. Every UNKNOWN status is a DOWNTIME for me. How can I reliably make uptime reports taking this into account?

See the pdf file (temporarily available on my NAS): https://naslooij.synology.me:5001/d/s/rG3Jrnxw4bY0qAWbI6wWqKUz7lmhO73f/XljhNPETJZaXGAXxl8gnjm0Q-5orcd0T-_7ggixVnAQo

Or if it is not possible to download/view the pdf, here some snippets of the report on imgur: https://imgur.com/a/BVYZQ7p

Please note the empty values in the table and the summary at the top and status summary at the bottom.

Thanks in advance,
Reno

Hi Reno,

This is quite strange since the Probe Health Sensor reported as down:

11/21/2022 7:24:58 PM
Probe Health Down
Probe disconnected (Disconnected)

At this point, a knowledge base post is not useful anymore. Therefore, please report the issue to the tech support via [email protected]. You can add this KB thread also as reference.