NimbostratusA 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?
NimbostratusI 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.
CumulonimbusExample is:
when LB_FAILED { if { [active_members [LB::server pool]] != 0 } { HTTP::fallback "; } else { HTTP::fallback "; } }
CumulonimbusLB_FAILED Trigger points:
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.
NimbostratusOk, 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.
Cumulonimbusif both pool members are goes down it will invoke test2
AltostratusExample is:
when LB_FAILED { if { [active_members [LB::server pool]] != 0 } { HTTP::fallback "; } else { HTTP::fallback "; } }
AltostratusLB_FAILED Trigger points:
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.
NimbostratusOk, 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.
Altostratusif both pool members are goes down it will invoke test2
AltostratusNimbostratusI read the above post but did not yet see how it solves my problem.
CumulonimbusNimbostratusI read the above post but did not yet see how it solves my problem.