Forum Discussion
NimbostratusDefining active/passive members
I'm looking at LB_FAILED and the other LB global commands, but I cannot suss out how to define what I need. This is one of my first cracks at iRules, and I need some guidance.
Thank you!
hoolioCirrostratus
Hi,
You can use priority on the members of a pool to achieve this. Set the member you want to receive requests to 100 for example. Then set the second member to 10. The member set to 100 will receive all requests unless it gets marked down.
You can get more detail on priority groups in the LTM configuration guide on AskF5 (Click here).
The config guide shows the configuration as it appears in a file. But you can also set this up in the GUI under Local Traffic | Pools | pool_name | Members.
Aaron
ML_108504Thanks Aaron! I managed to come to the same conclusion after further reading/research, but I appreciate the response. Hopefully it will help other newbies like me.
Shanmu123_27642Hi ..
What happens if the pool member in different data center
keshav_163381Still you can run that if the routing does not have any issue.
- Shanmu123_27642
Hi, can we achieve same host availability across Data center. For Example, I have a host configured in DC1, same hostname with the different IP address in DC2. Can i set F5 LTM such a way, when host on DC2 should come up only when the host on DC1 is down. ( Note: there are other members also in the LTM pool)
- keshav_163381
Yes, You can achieve it with priority group activation where you can add pool members DC 1 with higher priority and DC 2 with lower Priority.
- Shanmu123_27642
Ok, thanks for the reply, actually its not for all the pool members in the pool. Only one pool member which is Primary VM needs to be configured for Active / Passive setup.