Forum Discussion

Black_Shamrock_'s avatar
Black_Shamrock_
Icon for Nimbostratus rankNimbostratus
Feb 06, 2017

Dependent pool iRules

I have two pools created. The active members in pools 1 and 2 are active, and should change to the standby member ONLY if pool1/active member fails health check. I generated a case with F5, and am ...
application delivery
iRules
LTM
Kai_Wilke's avatar
Kai_Wilke
Icon for MVP rankMVP
Feb 06, 2017

Hi Black Shamrock,

I see a good chance to support your scenario by just configuring regular health-monitors. So you may try the following setup...

- PoolA
    - Member1:
        IP: 10.400.70.176 
        Priority Group: 5
        Health Monitors: Member Specific 
        Availability Requirement: All
        Select Monitors
            - Build-in "tcp" monitor
            - Custom "tcp" monitor with Alias Address / Alias Service Port settings for 10.400.70.177:Service_Port
    - Member2:
        IP: 10.500.42.161
        Priority Group: 1
        Health Monitors: Member Specific 
        Availability Requirement: All
        Select Monitors
            - Build-in "tcp" monitor


- PoolB
    - Member1:
        IP: 10.400.70.177 
        Priority Group: 5
        Health Monitors: Member Specific 
        Availability Requirement: All
        Select Monitors
            - Build-in "tcp" monitor
            - Custom "tcp" monitor with Alias Address / Alias Service Port settings for 10.400.70.176:Service_Port
    - Member2:
        IP: 10.500.42.162
        Priority Group: 1
        Health Monitors: Member Specific 
        Availability Requirement: All
        Select Monitors
            - Build-in "tcp" monitor

The above configuration should team the availibility of the members 10.400.70.176 and 10.400.70.177, so that if one of them becomes "offline" both will become "offline" at the same time.

Cheers, Kai