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Misty_Spillers's avatar
Misty_Spillers
Icon for Nimbostratus rankNimbostratus
Jan 06, 2010

Question about managing different types of persistence on one virtual server.

So sorry if the answer is been posted before, every time I search I don't get the results I'm looking for.

 

 

I have a situation where we would like to have one virtual server and different type of persistence per pool.

 

 

Example: We have a virtual server (mainsite1) with persistence set to cookie: cookie method: HTTP Cookie Insert. Which is required for the majority of pools. Our developers have implemented a product called Scaleout Software on a couple of pools which requires Persistence set to NONE.

 

 

Right now I'm getting this to work with 2 virtual servers (mainsite1 and mainsite2), which is complicated for the users to remember and it is requiring many redirects. Any way to get the pools with different persistence to work with one virtual server?

 

 

Thank you so much for any help.

 

config
design

3 Replies

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  • The_Bhattman's avatar
    The_Bhattman
    Icon for Nimbostratus rankNimbostratus
    Jan 06, 2010
    Hi Misty,

    It's possible to setup persistance for different pools via the irule

    Here is an untested example 

     
 when HTTP_REQUEST {  
     switch -glob [HTTP::host] {  
       "www.site1.com" {   
                persist cookie insert "site1_poolA_Cookie" "0d 00:30:00"  
                pool poolA  
                  }  
        "www.site2.com" {  
                persist cookie insert "site2_poolB_Cookie" "0d 00:45:00"  
                pool poolB  
                        }  
         
     }  
  }

    I hope this helps

    Bhattman
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Jan 06, 2010
    Hi Misty,

     

     

    Sure, you can use the persist command (Click here) to specify a different persistence method (not profile) and settings for a single VIP based on which pool you select. Here are a few related posts:

     

     

    One VS, 2 pools, separate persistence

     

    http://devcentral.f5.com/Default.aspx?tabid=53&view=topic&postid=60318&ptarget=60319

     

     

    Persistence Woes

     

    http://devcentral.f5.com/Default.aspx?tabid=53&forumid=31&tpage=1&view=topic&postid=1753117547

     

     

    If you read through these posts or try an iRule and have questions reply here for more feedback.

     

     

    Aaron
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Jan 08, 2010
    The wiki page for the persist command states that 'persist none' disables persistence for the rest of the TCP connection. So if you use the rule as it is, if a client makes a request for /app2, I think any subsequent request on the same connection would not get a persistence cookie. You could test this by adding logging to the iRule and using netcat (assuming it's an HTTP VIP) to open a TCP connection and then send a request for /app2 and then one for /app1. See if you get a persistence cookie in the response to /app1.

     

     

    Here is an example from the LTM command line using netcat (nc):

     

     

    $ nc 1.1.1.1 80

     

    GET /app2 HTTP/1.0

     

    Connection: keep-alive

     

     

     

    GET /app1 HTTP/1.0

     

     

     

    If it's working, in the response to the /app1 request you'll see a Set-Cookie header with the LTM persistence cookie.

     

     

    Aaron