Monitor Linux Tun interface

j808 · 23 January 2018 02:23

Anyone have a good rule on to monitor if the Tun0 interface on a Ubuntu Linux box. If it changes ip address or goes up and down?

j808 · 2 February 2018 21:46

Seems like there are alot of Tun0 interfaces but on the linux side it only shows 1
±-------+
| ifName |
±-------+
| lo |
| ens160 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
| tun0 |
±-------+

Kevin_Krumm · 3 February 2018 18:58

that seems odd. Pastebin output of ./discovery.php -d -m ports

j808 · 5 February 2018 19:03

Hi Kevin,
I have attached a pastebin
https://pastebin.com/N0STwuR5
Thank You

Kevin_Krumm · 5 February 2018 20:26

Discovery only see one tun0

maybe you need to re-discover your device.

j808 · 6 February 2018 00:47

Hi Yeah, I noticed that too. I just ran a redescover and seems to still have all the tun0 in the database. On the actual ports tab it only shows those 3.
I have the paste of the ports section
https://pastebin.com/BUcJfzrV

I can’t seem to find a unique identifier to monitor the specific port.

HomeServ · 6 February 2018 10:19

I’ve got the same problem on a proxmox hypervisor. Everytime I reboot or restart a VM/container, the port number changes and a new graph is made marking the old port as deleted.
Don’t have a solution to this but would like to see one.

Kevin_Krumm · 6 February 2018 11:43

@HomeServ code contribution is welcomed

HomeServ · 7 February 2018 07:21

I’ve checked the code yesterday and changed the SNMP Port Association Mode to ifName (in the GUI).
Last night I’ve rebooted my proxmox hypervisor and the ports won’t be deleted anymore.