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iRule LB_FAILED

TKC
Nimbostratus
Nimbostratus

I would like to configure iRule as below.

 

1) Configure to use the "VS_Any_Bypass" virtual server when the pool member is down

2) When IP addresses are added to the Data Group List, configure only those IP addresses to use the "VS_Any_Bypass" virtual server.

 

I made a sample policy, but I don't know if it's accurate.

=================================================

when LB_FAILED {

if { ([active_members Pool_WAF] < 1) or ([class match [IP::client_addr] equals bypass-sip]) } {

LB::detach

LB::reselect

virtual VS_Any_Bypass

  } 

}

=================================================

 

*Pool_WAF : Pool member

*bypass-sip : Data Group List

 

The type of virtual server to which this ireule is added is performance L4.

 

Thanks.

1 REPLY 1

boneyard
MVP
MVP

it might not be the answer you are hoping for, but have you tried?

 

if you can't because of chance of disruption then try on a test virtual server. but even without attaching creating the iRule will at least do some syntax checking and determine if certain commands are allowed in certain events.

 

if you can't try have you searched the iRule clouddocs page?

 

https://clouddocs.f5.com/api/irules/LB_FAILED.html

 

throws up some interesting info: Note: The LB_FAILED event is not triggered for Performance L4 virtual servers. There is an enhancement request to add this in BZ341776. Contact F5 Support for additional information.

 

https://clouddocs.f5.com/api/irules/LB__reselect.html

 

seems to indicate that just LB::reselect selects the next pool member, which doesnt exist, so at least it has be be

LB::reselect virtual VS_Any_Bypass