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murali_125469's avatar
murali_125469
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May 02, 2018

Health Monitor , F5 KB Article

Good day everyone !

so I'm going through the below KB article for my 201 exam prep and under "About health monitor association" they have mentioned something like below (in quotes ) and its not making sense to me obvisouly we can bind any kind of monitor to the pool & how can we exclude a pool member from being monitored ?

https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-concepts-11-4-0/5.htmlconceptid

section : About health monitor association "The only monitor types that are not available for associating with pools are monitors that are specifically designed to monitor nodes and not pools or pool members. That is, the destination address in the monitor specifies an IP address only, rather than an IP address and a service port. These monitor types are:

ICMP
TCP Echo
Real Server
SNMP DCA
SNMP DCA Base
WMI

"

"When associating a monitor with an entire pool, you can exclude an individual pool member from being associated with that monitor. In this case, you can associate a different monitor for that particular pool member, or you can exclude that pool member from health monitoring altogether. For example, you can associate pool members A, B, and D with the http monitor, while you associate pool member C with the https monitor."

Thank You Murali.

1 Reply

  • Hi

     

    If you go and look at the properties of a pool member and then at the Health Monitors section there are 3 options. Either "Inherit from Pool" which means that the monitor for this member picks up the monitor associated to the entire pool, or "Member Specific" which is how you get your https monitor instead of http monitor for this member as per your example or "None" which is hopefully self-explanatory :-)