Forum Discussion

Nimbostratus

Mar 22, 2015

Health monitor for a virtual server using an iRule

Hi, I have a virtual server that essentially uses an iRule to connect at runtime to an external URL. For example, say I'm connecting to an Amazon Web Service called fred.aws.com. In my iRule I d...

nitass

Employee

Mar 22, 2015

Now I want a health monitor to know when the connection to fred.aws.com is unavailable. How do I get the monitor to send the GET string to "fred.aws.com"?

you do not have fred.aws.com pool, do you? where will you assign the monitor to?

although, you can create dummy pool and assign the monitor to, you need static ip for fred.aws.com pool member unless you use node fqdn which is introduced in 11.6.0 (so, you do not need your current irule logic which resolves fqdn on-the-fly).

Populate pools by FQDN

This release includes the ability to configure a BIG-IP system with nodes and pool members that are identified with fully-qualified domain names (FQDNs). When configuring pool members with FQDN, addresses dynamically follow DNS changes. Fully dynamic DNS-managed pools may even be created.

Release Note: BIG-IP LTM and TMOS 11.6.0

https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/product/relnote-ltm-11-6-0.html