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SSHSSH_97332's avatar
SSHSSH_97332
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Jan 14, 2012

Load Balancing to Casches

i need to implement the below 2 functions with LTM to load balance to Cache servers :

 

Election Hashing , Top Domain Selection

will all of that be done using IRules ? will it be one Irule or three ? Can you help me with examples

 

 

 

  • are you using v10? if so, just wonder why you do not just use built-in carp.

     

     

    sol11362: Overview of the CARP hash algorithm

     

    http://support.f5.com/kb/en-us/solutions/public/11000/300/sol11362.html
  • Thanks , does this achive Top Domain selection ?

     

     

    also it mentions the Irule :

     

    when HTTP_REQUEST {

     

    persist hash [HTTP::uri]

     

    }

     

     

    This persists based on the URI , my target is to persist based on the site ( all tarffic of youtube to go to same cache ........ ) , what is the IRule for that ?

     

  • i guess you mean to load balance by using part of FQDN. if so, yes it is possible. you can specify any part of FQDN when doing CARP i.e. replace [HTTP::host] with whatever you want.