NetXMS deletes interface and recreates it and sends notifications

Reply to NetXMS deletes interface and recreates it and sends notifications on Wed, 14 Nov 2018 08:03:40 GMT

i.katimertzoglou — Wed, 14 Nov 2018 08:03:40 GMT

Finally I've done it with Hook:ConfigurationPoll and I check for both "node name" and "Interface name" as well.
If it matches both of them then I set Interface Expected State to Ignore

interfaces = GetNodeInterfaces($node);
foreach (interface : interfaces)
{
	if ( $node->name ~="(?i)Node1Name" && interface->name ~= "(?i)tun.*" ){
	SetInterfaceExpectedState(interface, "IGNORE");
	}else if ( $node->name ~="(?i)Node2Name" && interface->name ~= "(?i)tun.*|vmnet.*|docker.*|docker_gwbridge|vboxnet.*" ){
	SetInterfaceExpectedState(interface, "IGNORE");}
}

Reply to NetXMS deletes interface and recreates it and sends notifications on Tue, 13 Nov 2018 14:46:39 GMT

i.katimertzoglou — Tue, 13 Nov 2018 14:46:39 GMT

Great thank you guys.
I got it working very helpful information.
I also filter the nodes with $node variable.

but why is it that when interface is down and do a status poll it says cannot poll from that interface, and when interface is back on it still says it cannot poll data from that interface?
also if I do a configuration poll when interface is down (even restart the interface) netxms deletes that interface.

Reply to NetXMS deletes interface and recreates it and sends notifications on Wed, 07 Nov 2018 17:07:05 GMT

gdodd — Wed, 07 Nov 2018 17:07:05 GMT

Here is the Hook:CreateInterface script in the script library that I use to give you an idea:

if ($1->name ~= "(?i).*Teredo.*|.*isatap.*|.*Loopback.*|.*Bluetooth.*|Local Area Connection\* 12|Local Area Connection\* 11|Local Area Connection\* 9|Local Area Connection\* 8|Local Area Connection\* 2|6TO4 Adapter|sit0") {
   return false;
} else {
   return true;
}

You could add in tun1 to that list or whatever names you do not want to create.

Reply to NetXMS deletes interface and recreates it and sends notifications on Wed, 07 Nov 2018 13:18:39 GMT

Tursiops — Wed, 07 Nov 2018 13:18:39 GMT

You can write a Hook:CreateInterface script to prevent interfaces from being created that you don't care about.
You can also create a Hook:ConfigurationPoll script to automatically check all node interfaces, then set the interface expected state to IGNORE on interfaces you don't want to be alerted on. I wouldn't think you can do that inside the CreateInterface Hook, as the interface doesn't get created until after the script has run, but I could be wrong.

For example the following Hook:ConfigurationPoll will set any network interface on a device detected as a printer to Ignore:

interfaces = GetNodeInterfaces($node);
foreach (interface : interfaces)
{
	if ( $node->isPrinter == TRUE ) SetInterfaceExpectedState(interface, "IGNORE");
}

Hope that helps.