Forum Discussion
NimbostratusIs it possible to have two different fallback pages?
A customer of us wants a redirect to a webpage in case of a LB_FAILED and a redirect to different webpage in case of maintenance.
I managed to create the fallback in case of maintenance by creating a monitor to a specific file on the backend nodes checking the content to a specific word.
Is it possible, and if yes how, to create a second option to redirect in case of a failure?
21 Replies
Paul_Visser_193I think I found the/a solution to work with the monitor by combining your info on LB_FAILED section and the info from:
https://support.f5.com/csp/article/K12818 and https://devcentral.f5.com/codeshare?sid=693
With the monitor by using both 'receive string' and 'receive disable string' I can get the state of the pool in 'disable' or 'down'. Then using 'disable' in the when HTTP_REQUEST and 'down' in the when LB_FAILED section to redirect to different webpages.
Thanks for your input.
RaghavendraSY_7Cumulonimbus
Example is:
when LB_FAILED { if { [active_members [LB::server pool]] != 0 } { HTTP::fallback "; } else { HTTP::fallback "; } }
- RaghavendraSY_7
LB_FAILED Trigger points:
- When failed to select a pool member
- When Pool member selected is not reachable from F5
- When Pool member fails to respond to connection
When LB_Failed trigger happens request will go to Test1 if a server dies in the middle of an active connection, and send clients to Test2 if there are no active pool members to load balance.
hope this clears.
- Paul_Visser_193
Ok, but when does test1 get invoked then? How do I get LB_Failed and still a member in the pool?
BTW, I appreciate your help in this, thanks.
- RaghavendraSY_7
if both pool members are goes down it will invoke test2
RaghavendraSYAltostratus
Example is:
when LB_FAILED { if { [active_members [LB::server pool]] != 0 } { HTTP::fallback "; } else { HTTP::fallback "; } }
- RaghavendraSY
LB_FAILED Trigger points:
- When failed to select a pool member
- When Pool member selected is not reachable from F5
- When Pool member fails to respond to connection
When LB_Failed trigger happens request will go to Test1 if a server dies in the middle of an active connection, and send clients to Test2 if there are no active pool members to load balance.
hope this clears.
- Paul_Visser_193
Ok, but when does test1 get invoked then? How do I get LB_Failed and still a member in the pool?
BTW, I appreciate your help in this, thanks.
- RaghavendraSY
if both pool members are goes down it will invoke test2
- RaghavendraSY
- Paul_Visser_193
I read the above post but did not yet see how it solves my problem.
- RaghavendraSY_7
- Paul_Visser_193
I read the above post but did not yet see how it solves my problem.
