Forum Discussion
Sridhar_111831
Nimbostratus
NimbostratusURI Function and LB_Failed
Hi All,
Need help on setting up a irule. Here is the requirement.
The web servers host mulitple application instance. We already have a test page being monitored. They added a new app instance and they want to monitor specific page and if all pool members fails, it should redirect to fall back pool only for the newly added instance.
Now, I created separate pool and assign monitor to check the new app page. However, I need help on setting up irule to check uri for /app and then point to a pool and if that pool fails it should direct to fall back pool.
Help Please.
Regards,
Sri
Sridhar_111831I currently have this...
when HTTP_REQUEST {
if { [HTTP::uri] starts_with "/app1" } {
if { [active_members [LB::server pool]] == 0 } {
pool fall_back_pool
elseif { pool orginal_pool }
}
}
This doesnt help because the pool assigned with VIP has generic monitor mapped with it. However, I need different monitor for orginal_pool (used by app1)
please suggest.
iamczar_12961Cirrus
Hello there,
Can you give this rule a try?
when HTTP_REQUEST {
if { [HTTP::uri] starts_with "/app1" } {
pool original_pool
}
}
when LB_FAILED {
if { [active_members http_pool] == 0 } {
log local0. "Pool [LB::server pool] has an active mbrs = [active_members [LB::server pool]]"
pool fall_back_pool
log local0. "Page went to Fallback pool"
persist none
LB::reselect
}
}
hope that helps..- Sridhar_111831Thank you. I would check this and reply back.