iRule: persist uie "$var1:$var2"

Hi Michal,

if you want to persist on a combination of parameters it will be required to match exactly.

when HTTP_REQUEST {
   log local0. "[IP::client_addr]:[URI::query [HTTP::uri] param1]"
   persist uie "[IP::client_addr]:[URI::query [HTTP::uri] param1]"
}

I.e. you try to persist on combined client IP and a query parameter. Now watch your persistence table (specify

mode

and the

virtual

server to limit output; the

all-properties

parameter just dispays some more details i.e. record age):

watch -d 'tmsh show ltm persist persist-records mode universal virtual vs_51 all-properties'

Sys::Persistent Connections
universal - 10.131.131.51:80 - 10.131.131.64:80
-------------------------------------------------
  TMM           1
  Mode          universal
  Value         10.131.131.176:abc
  Age (sec.)    36
  Virtual Name  /Common/vs_51
  Virtual Addr  10.131.131.51:80
  Node Addr     10.131.131.64:80
  Pool Name     /Common/pool_distribution_service
  Client Addr   10.131.131.176
  Owner entry

universal - 10.131.131.51:80 - 10.131.131.63:80
-------------------------------------------------
  TMM           1
  Mode          universal
  Value         10.131.131.176:hij
  Age (sec.)    24
  Virtual Name  /Common/vs_51
  Virtual Addr  10.131.131.51:80
  Node Addr     10.131.131.63:80
  Pool Name     /Common/pool_distribution_service
  Client Addr   10.131.131.176
  Owner entry

Total records returned: 2

Whenever the value ist matched, the associated poolmember will be reselected.

Use i.e. cURL to play with query parameters:

curl -v http://10.131.131.51/path?param1=hij

Thanks, Stephan