how to get active ltm via python f5-sdk

I don't know the Python API but looks like you are after tmsh show sys failover. e.g.,

 

 tmsh show sys failover
Failover active for 2d 03:22:15

 

If that's the case, try the following curl command to test if it actually works with the address, userID and password you specified in the code.

 

curl -sku user:passwd https://host/mgmt/tm/sys/failover

 

Example output (formatted nicely using | python -m json.tool)

 

{
    "apiRawValues": {
        "apiAnonymous": "Failover active for 2d 03:24:19\n"
    },
    "kind": "tm:sys:failover:failoverstats",
    "selfLink": "https://localhost/mgmt/tm/sys/failover?ver=12.1.2"
}

 

The python equivalent of the above as below. In addition, it checks the status of two hosts in HA (assuming both hosts have the same userid/passwd).

 

from f5.bigip import ManagementRoot

for ip in ['192.168.226.41', '192.168.226.131']:
    mgmt = ManagementRoot(ip, 'admin', 'admin')
    fail = mgmt.tm.sys.failover.load()
    failOverStat = fail.apiRawValues['apiAnonymous'].rstrip()
    print "%s: Ver %s, %s" % (ip, mgmt.tmos_version, failOverStat)

 

Sample output:

 

192.168.226.41: Ver 13.0.0, Failover standby for 0d 04:35:49
192.168.226.131: Ver 13.0.0, Failover active for 0d 04:35:52

 

See also F5 Python SDK API Docs.