Deleting items brings down Main UI for a couple of minutes

Add-ons UIs
1

Hello everyone,

I encounter a rather strange problem since my move to OH4.2.

Whenever I delete an item from Main UI the whole web interface gets unresponsive, page reloads won’t work, the whole webserver seems to be down. However there is nothing in the logs at all. I can also confirm that rules keep on running as they should, timers used in rules are still executed so the whole system seems to be running ok except for the Main UI webserver.

After a couple of minutes the interface comes back up and everything works as usual. Has anyone experienced something similar yet? Does anyone know which log level I could change to maybe get some more insights?

Thanks!

2

What are the resources on the server when this happens? Are your CPUs pegged, RAM used up and swap starting to be used, etc? You can use top or htop on Linux, the task manager on Windows.

3

Are you running unifi UDM or something ?

4

No the hardware is rather bored most of the time. OpenHAB runs in an LXC Container on proxmox. Currently it has 2 CPUs, 4GB RAM and 1GB Swap allocated. If I can believe the proxmox stats the CPU usage never went above 6%, RAM was at a maximum of 2.5GB and the load of the whole system is rather low most of the time.

Yes, I have a UDM SE as a router.

5

Check your unifi security logs …

6

Can you point into any direction what I should be looking for? I don’t see anything obvious

7

Look for something like

8

Bingo! Wow, thanks a lot! Protection where you least expect it :smile:

So is there a reason why I encounter this the first time after my switch to OH 4.2? I never had a similar problem before :man_shrugging:

9

The last couple of versions of OH have added autodiscovery features to recommend add-ons to install. These require scanning the network. I bet the scan looks a lot like surveillance.

10

Yes but the reason I got thrown out by my IDS was because I was deleting things on the server. And I was not deleting a lot but just one single item. So I don’t think it is related to the discovery features. Since I was using the same firewall before it is just very surprising that I never noticed anything similar before I upgraded to 4.2. I cannot really imagine that running on docker before made a big difference on the network level.