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Ecesureshkumar's avatar
Ecesureshkumar
Icon for Nimbostratus rankNimbostratus
Aug 13, 2015

Source Address Persistence Issue - sometime Load Forwarded to single APP server while application restarts

Hi there,   We have three Web servers and two Application servers and have persistence configuration for application functionality.   VS_WEB – Cookie Persistence VS_APP – Source Address Persist...
application delivery
availability
deployment
devops
iRules
LTM
Christophe_Lem2's avatar
Christophe_Lem2
Icon for Cirrus rankCirrus
Aug 14, 2015

When you restart your app servers, one will be available first. If you have permanent traffic between your web servers and VS_APP, the persistence record will never expire and therefore the first app server will keep all the load.

 

If you don't want that behaviour, you could use cookie persistence towards the app servers as well.

 

  • Ecesureshkumar's avatar
    Ecesureshkumar
    Icon for Nimbostratus rankNimbostratus
    Aug 25, 2015
    instead of cookie persistence, can we check on irule to for Web1 to APP1 (fallback App2) and similarly Web2 to APP2 (fallback APP1). Can you help us to create this irule