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Forum Discussion

vvskaladhar_488's avatar
vvskaladhar_488
Icon for Nimbostratus rankNimbostratus
Feb 04, 2015

irule for implementing hash persistency

HI All,   I have configured Hash persistency as primary and source address as fall back persistency ..and on the pool I have round robin . But I am seeing all the load is being sent to single serv...
application delivery
devops
iRules
vvskaladhar_488's avatar
vvskaladhar_488
Icon for Nimbostratus rankNimbostratus
Feb 05, 2015

HI Stephan,

 

Application responded as below

 

Unique Identifier value is “1” on both the servers WEB07 & WEB08 and there is no header value configured.

 

So in this case if I add below irule will it work for Hash?

 

when HTTP_REQUEST { persist hash [HTTP::header "1"] }

 

StephanManthey's avatar
StephanManthey
Icon for Nacreous rankNacreous
Feb 05, 2015
Hi vvskaladhar, you can use a webbroswer plugin (i.e. FireFox > Tools > WebDeveloper > Network) to track traffic between your browser and the servers. I guess you will find http-headers with session specific values. This value will be unique for a session on application layer and can be used for persistence. Now you simply take the name of the header to persist on. Alternatively you can just use the cookie insert mode as primary persistence profile. This will be the easiest solution but requires SSL-termination on the virtual server and a http-profile. Thanks, Stephan