Automatically Add Newly 'UP' Interface to Existing Node

brentbo

Hello Everyone,

Is there an elegant way to detect and manage interfaces that have become active after the node initially was discovered? We don't have the hardware resources to manage all interfaces, so we routinely omit administratively down interfaces during discovery. Often these interfaces subsequently go 'green', but remain unmanaged. Also, we have subinterfaces, often GRE tunnels, frequently appearing in our topology.

Of course we understand that these newly active interfaces can be added during Network Sonar discovery, and that these discoveries can be scheduled to run on a schedule. We're unsatisfied with this approach because it depends on static lists of IP addresses (discovering subset won't work for us as our target devices are a small subset of our overall device population).

Has anyone developed an approach for this? Maybe using PowerShell? Thanks, Brent Papworth

PS

We have reviewed the thread here on Thwack Best Way to Add a Newly Active Interface to an Existing Node.

We have seen (and voted up) this feature requests:

AUTOMATIC ADD NEW VOLUMES, INTERFACES USING REDISCOVERY OPTION INSTEAD OF CREATING SEPARATE DISCOVERY FOR GROUP OF IPs

mesverrum

This worked in my lab for SNMP based nodes to automatically add any new up interfaces, the verb it uses doesn't work on wmi or agent nodes though and I didn't make as much progress on the alternative method of handling those as I would have liked.

This would presumably be run as a scheduled task on the orion server, using a domain account with admin permissions to log into your orion console.  Checks each SNMP based node and if it finds any interfaces that are up and not currently being monitored it will add them.  Unfortunately the verb doesn't let us apply filters against the interface captions or anything else beyond up/down and interface type id.

<#------------- CONNECT TO SWIS -------------#>

# load the snappin if it's not already loaded (step 1)

if (!(Get-PSSnapin | Where-Object { $_.Name -eq "SwisSnapin" })) {

    Add-PSSnapin "SwisSnapin"

}

#define target host and credentials

$hostname = 'localhost'

#$user = "admin"

#$password = "password"

# create a connection to the SolarWinds API

#$swis = connect-swis -host $hostname -username $user -password $password -ignoresslerrors

$swis = Connect-Swis -Hostname $hostname -Trusted

<#------------- ACTUAL SCRIPT -------------#>

# The node ID to discover interfaces on

$nodes = Get-SwisData $swis "SELECT NodeID, Caption FROM Orion.Nodes where objectsubtype = 'SNMP'"

foreach ($n in $nodes) {

    # Discover interfaces on the node

    "Discovering $($n.caption)"

    $discovered = Invoke-SwisVerb $swis Orion.NPM.Interfaces DiscoverInterfacesOnNode $n.nodeid

    if ($discovered.Result -ne "Succeed") {

        " Interface discovery failed."

    }

    else {

        # Add the discovered interfaces

        " Discovered Interfaces"

        $intToAdd = $discovered.DiscoveredInterfaces

        # this section removes interfaces that are down or have already been added, unfortunately we cant filter against interface caption because it is a just dummy value in the current version

        foreach($int in $intToAdd.DiscoveredLiteInterface) {

            if($int.ifoperstatus -ne 1 -or $int.interfaceid -ne 0) {

                $intToAdd.RemoveChild($int) | Out-Null

            }

        }

        "  $($intToAdd.DiscoveredLiteInterface.count) interfaces to add"

        $intToAdd.DiscoveredLiteInterface

        Invoke-SwisVerb $swis Orion.NPM.Interfaces AddInterfacesOnNode @($n.nodeid, $intToAdd, "AddDefaultPollers") | Out-Null

    }

}

# the addinterfacesonnode verb also doesn't set the interface typename and description so we need to do that manually, and since there isn't a built in table to find them this method is a bit weak, this only fixes the descriptions if an interface with the same type number has already been in the system through the normal methods

$cleanup = Get-SwisData $swis @"

select i.uri, i.fullname, i.type, t.typename, t.typedescription

from orion.npm.Interfaces i

left join (SELECT distinct Type, TypeName, TypeDescription

FROM Orion.NPM.Interfaces where typename not like '') t on t.type=i.type

where i.typename = '' and t.typename is not null

foreach($uri in $cleanup) {

    Write-Host "Setting type for $($uri.Fullname) with type $($uri.type), $($uri.typename), $($uri.typedescription)"

    $uri.uri | Set-SwisObject $swis -Properties @{ Type = $($uri.type); Typename = $($uri.typename); TypeDescription = $($uri.typedescription)}

}

"These interfaces still have blank type descriptions"

$problems = Get-SwisData $swis "SELECT fullname from orion.npm.interfaces where typename is null or typename like ''"

$problems

-Marc Netterfield

    Loop1 Systems: SolarWinds Training and Professional Services

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