Use F5 Python SDK to Create Node with Pool in Separate Partition

This code will add a node to the Common Partition. Once the node is added in common it needs to be added to two different Partitions. For example below adding it to one different Partition. I have read this before but when running "update" the old information is removed and the new is added. How can I append the new to the old using the SDK?

 

Get Started

from import ManagementRoot

 

Connect to the BigIP and configure the basic objects

mgmt = ManagementRoot("bigip.example.com", "admin", "somepassword")

 

Add New Node

mynode = mgmt.tm.ltm.nodes.node.create(name='10.5.183.191', address='10.5.183.191', description='12345avc', partition='Common')

 

Now figure out how to add this node in different pools Load an existing pool using "load" command "CL-COM_SELFSERV" is Partition, "pool1" is existing pool

pool_a = mgmt.tm.ltm.pools.pool.load(name='pool1', partition='CL-COM_SELFSERV')

 

Members (.191 was in pool already and want to add .192 and it removed .191. I need both to stay.

pool_a.members = '10.5.183.192:8080'

 

Complete update to pool (When using "update" It removes everything and then adds in new member.

pool_a.update()

 

So when adding new member to a pool it wipes out the existing members. I then tried

 

pool_a.members.append('10.5.183.192:8080')

 

but received error:

 

Traceback (most recent call last): File "", line 1, in pool_a.members.append('10.5.183.192:8080') File "C:\Python27\lib\site-packages\f5\bigip\mixins.py", line 125, in getattr raise AttributeError(error_message) AttributeError: 'f5.bigip.tm.ltm.pool.Pool'>' object has no attribute 'members'

 

 

Up front: I'm very new to the SDK. My efforts so far have only focused on querying the device and reading state. I haven't practiced much in the realm of creating or modifying objects.

The pool members are a sub-collection under the pool. You can get the sub-collection:

pool_a.members_s.get_collection()

which will return a list of member objects. It looks like you're trying to pass just a string, where the collection of members is actually a list of member objects. Rather than botch the nomenclature, I found a decent starting example in the docs. Look about half-way down in the coding example on this link for an example of creating new pool members:

Managing LTM Pools and Members via the F5 SDK

Sorry I can't give you a more concrete example but hopefully this will help give you a start until someone with more experience on the SDK can fill in any other details.

To add an existing node to an existing pool:

pool = mgmt.tm.ltm.pools.pool.load(partition='Common', name='mypool')
pool.members_s.members.create(partition='Common', name='mynodename:80')

The secret sauce is in the overloaded name argument - it is really "node_name:service_port".

The above adds an existing node called "mynodename" to the pool and sets its service port to 80.

To add an existing node to an existing pool:

pool = mgmt.tm.ltm.pools.pool.load(partition='Common', name='mypool')
pool.members_s.members.create(partition='Common', name='mynodename:80')

The secret sauce is in the overloaded name argument - it is really "node_name:service_port".

The above adds an existing node called "mynodename" to the pool and sets its service port to 80.