How do I insert LB's IP with an irule?

Unfortunately, we don't have a mechanism for accessing the BIGIP's mgmt IP address nor any of the Self IP's.

 

 

Your best bet would probably be to use an external class/data group. The class would reference a file on the BIGIP that could contain the BIGIP's IP address and then you could reference that in the rule.

 

 

Here's the steps I would do:

 

a) create an external class called bigip_address and have it reference the file /config/bigip_address.txt.

 

b) create a script that grep's out the bigip's mgmt address from bigip_base.conf or from 'ifconfig eth0' and writes it to /config/bigip_address.txt

 

c) Use $::bigip_address to get this value in your rule.

 

 

The only trick is to make sure the script gets run if the configuration is changed (which I would assume should not really happen that often).