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paul_dawson_258's avatar
paul_dawson_258
Icon for Nimbostratus rankNimbostratus
Jun 06, 2018
Solved

Query to retrieve VIP name from Node IP input

Hi, We are doing a DC migration and have the need to retrieve a list of VIP names based on the server/node IP address. I was wondering if anyone has written a script which does this already. I would ...
application delivery
BIG-IP
security
TMSH
  • Jason_Nance_333's avatar
    Jason_Nance_333
    Jun 06, 2018

    This should do it, though it is fairly resource-intensive if you have a lot of virtual servers / pools / nodes:

    !/usr/bin/env python3

from f5.bigip import ManagementRoot
from getpass import getpass
from pprint import pprint

hostname = 'my.f5.ltm.net'
username = 'foo'

node_ips = ['192.168.1.1', 192.168.1.2', '192.168.1.3']

mgmt = ManagmentRoot(hostname, username, getpass())

 Get node names that have IPs in the list

nodes = []

for node in mgmt.tm.ltm.nodes.get_collection():
    if node.address in node_ips:
         fullPath is /PARTITION/NAME
        nodes.append(node.fullPath)

 Get pool names which nodes in list belong

pools = []

for pool in mgmt.tm.ltm.pools.get_collection():
    members = pool.members_s.get_collection()

    for member in members:
         Member fullpath is '/PARTITION/NODENAME:SERVICE_PORT'
        if member.fullPath.split(':')[0] in nodes:
            pools.append(pool.fullPath)
            break

 Get virtual server names which pools in list belong

virtuals = []

for virtual in mgmt.tm.ltm.virtuals.get_collection():
    if hasattr(virtual, 'pool') and virtual.pool in pools:
        virtuals.append(virtual.fullPath)

pprint(virtuals)
Jason_Nance's avatar
Jason_Nance
Icon for Nimbostratus rankNimbostratus
Jun 06, 2018

This should do it, though it is fairly resource-intensive if you have a lot of virtual servers / pools / nodes:

!/usr/bin/env python3

from f5.bigip import ManagementRoot
from getpass import getpass
from pprint import pprint

hostname = 'my.f5.ltm.net'
username = 'foo'

node_ips = ['192.168.1.1', 192.168.1.2', '192.168.1.3']

mgmt = ManagmentRoot(hostname, username, getpass())

 Get node names that have IPs in the list

nodes = []

for node in mgmt.tm.ltm.nodes.get_collection():
    if node.address in node_ips:
         fullPath is /PARTITION/NAME
        nodes.append(node.fullPath)

 Get pool names which nodes in list belong

pools = []

for pool in mgmt.tm.ltm.pools.get_collection():
    members = pool.members_s.get_collection()

    for member in members:
         Member fullpath is '/PARTITION/NODENAME:SERVICE_PORT'
        if member.fullPath.split(':')[0] in nodes:
            pools.append(pool.fullPath)
            break

 Get virtual server names which pools in list belong

virtuals = []

for virtual in mgmt.tm.ltm.virtuals.get_collection():
    if hasattr(virtual, 'pool') and virtual.pool in pools:
        virtuals.append(virtual.fullPath)

pprint(virtuals)
Jason_Nance's avatar
Jason_Nance
Icon for Nimbostratus rankNimbostratus
Jun 14, 2018

That notation (

w.x.y.z%something
) is called a route domain. There's a couple ways to deal with it depending on your situation but it can be a bit iffy if you have duplicate IPs in use on a different route domains (one of the primary reasons to use route domains).

The easy/cheesy option is to use a little script to generate the 

node_ips
list for you with the route domains included:

!/usr/bin/env python3

from f5.bigip import ManagementRoot
from getpass import getpass
from pprint import pprint

hostname = 'my.f5.ltm.net'
username = 'foo'

 Node IPs without route domain
node_ips_wo_rd = ['192.168.1.1', '192.168.1.2', '192.168.1.3']
node_ips = []

mgmt = ManagmentRoot(hostname, username, getpass())

 Pull back all nodes that have an IP in the list (regardless of route
 domain) and print out a list with the route domain included
 This will be slow for LTMs with lots of nodes
for node in mgmt.tm.ltm.nodes.get_collection():
    if node.address.split('%')[0] in node_ips_wo_rd:
        node_ips.append(node.address)

print('node_ips = [{}]'.format(', '.join(["'{}'".format(x) for x in node_ips])))

That will print out something like:

node_ips = ['192.168.1.1%400', '192.168.1.2%300', '192.168.1.2%301', '192.168.1.3']

...which you can clean up (such as if you have duplicate IPs on different route domains and don't want them all) and then copy/paste into the other script.

If that doesn't fit the need let me know what's up and we can come up with a different option.