Using a network discovery to add volumes for monitoring

Question

We have hundreds of Agent-polled nodes and I want to add Swap space monitoring for them. This is important: nodes are already Agent-polled. Unfortunately, "List Resource" button is hidden if I check several nodes: 
 
 This is example of bad UX, where I can't use ordinary feauture without any reason. 
 Likely, you will suggest me to use Network Discovery, but it doesn't work well. My step-by-step course of action: 
 1. Settings > Network Discovery 
 
 And the first question: how can I add nodes here automaticly (for example based of NodeRole or NodeOwner custom property)? I have no list if IP's for my dozens nodes. Manual filling IP addresses is nonsense. 
 2. Next, Next, Next 
 3. "Manually set up monitoring" (because I don't want to add volumes other than Swap space): 
 
 4. Yes, run: 
 
 5. Waiting some time 
 6. Results (5/5 nodes found - I wouldn't have the patience for 250 IP's) 
 
 And the second question: Why are they "net-snmp - Linux"? They are Agent-polled nodes. 
 7. I don't need any network interfaces, so ucheck all: 
 
 8. Volumes. Let's check only "RAM", because Swap space is in this category. 
 
 9. Next, Next, Next 
 10. Results: 
 
 Skipped, not processed. That's pretty suspicious, hm? 
 11. Finish 
 12. Let's check these 5 nodes, shall we? 
 First one: 
 
 No tick!

Second: 
 
 No tick!

Third: 
 
 No tick! 
 ... 
 
 Fourth: 
 
 No tick!

Fifth: 
 
 No tick!

So question is the same: how to add volumes for several (dozens/hundreds) nodes simultaneously?

marlief22 · Answer

Hi there, 
 You can un-manage these by running these queries in order: 
 PLEASE RUN THESE AT YOUR OWN RISK AFTER TESTING, NOT LIABLE FOR ANY PROBLEMS THAT OCCUR 
 First, un-tick all of the pollers whose volumes don't match the name 'Swap Space': 
 --Make a backup of your DB before running ANY UPDATE/DELETE commands

UPDATE [dbo].[Pollers] p
INNER JOIN [dbo].[Volumes] v on v.VolumeID = p.NetObjectID 
SET p.Enabled = 'False'
WHERE p.NetObjectType = 'V'
AND v.VolumeDescription <> 'Swap Space' 
 Second, remove all volume objects that are were unticked from the first query: 
 --Make a backup of your DB before running ANY UPDATE/DELETE commands

DELETE FROM [dbo].[Volumes] v
Select * from volumes v
INNER JOIN [dbo].[Pollers] p on v.VolumeID = p.NetObjectID 
WHERE p.NetObjectType = 'V' and P.Enabled = 'False' 
 Finally, remove the un-ticked pollers from the poller table (This is optional as I think the database maintenance would sort this out overnight): 
 --Make a backup of your DB before running ANY UPDATE/DELETE commands

DELETE FROM [dbo].[Pollers] p
WHERE p.NetObjectType = 'V' and P.Enabled = 'False' 
 Kind regards, 
 Marlie Fancourt | SolarWinds Pre-Sales Manager 
 Prosperon Networks | SolarWinds Partner since 2006 
 If this helps answer your question please mark my answer as confirmed to help other users, thank you!

marlief22 · Answer

Hello, 
 First a sanity check, your process is fine as I followed it myself and didn't have any problems adding volumes to existing nodes:

(Note the lack of the 'Import Status: Not Processed' message - here is the key)

That leads me closer to believing there is some other system that is interfering, and my bet would be on the 'Duplicate Detector' feature, which you can try disabling from here: https://support.solarwinds.com/SuccessCenter/s/article/Disable-Duplicate-Detector-for-Discovery-Engine?language=en_US 
 If you are still having problems, I'd recommend raising this to support as they will be able to go through the discovery logs to see exactly what is going on. 
 Kind regards, 
 Marlie Fancourt | SolarWinds Pre-Sales Manager 
 Prosperon Networks | SolarWinds Partner since 2006 
 If this helps answer your question please mark my answer as confirmed to help other users, thank you!

Using a network discovery to add volumes for monitoring

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