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Rob_125924's avatar
Rob_125924
Icon for Nimbostratus rankNimbostratus
Aug 21, 2013

get persistent records returns empty array

Hi, we are using BigIP Version 11.2 and iControl 10.2

 

Unfortunately the method get_persistent_records on a pool does return only empty array.

 

LocalLBPersistenceMode[] mode = new LocalLBPersistenceMode[]{LocalLBPersistenceMode.PERSISTENCE_MODE_COOKIE}; LocalLBPersistenceRecord[][] records = m_pool.get_persistence_record(new String[]{pool}, mode);

 

The pool has persistent cookies enbled, means the browser shows the BIGipServer cookie in the browser when opening the url to the pool.

 

I have tried it also with all the other modes, but that does not help.

 

What I´m doing wrong ?

 

Regards Robert

 

cloud
devops
iControl
sap

8 Replies

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  • Michael_Yates_6's avatar
    Michael_Yates_6
    Icon for Cirrus rankCirrus
    Aug 21, 2013

    Hi Rob,

     

    If you are using Cookie Persistence then the system should not have any persistence records. That information is injected into the cookie and given to the Client.

     

    Try switching our query to PERSIST_MODE_NONE and see what you get, or query a pool with an alternate persistence type that the system does track.

     

    LocalLB::Pool::get_persistence_record

     

    • Rob_125924's avatar
      Rob_125924
      Icon for Nimbostratus rankNimbostratus
      Aug 21, 2013
      You mean iwth cookie persistence there will be never any persistence records ? Is there maybe another possibility to invalidate the persitent cookie ? If I force offline the pool member then enable it again then the same vm is used. How to prevent that ?
  • Michael_Yates's avatar
    Michael_Yates
    Icon for Nimbostratus rankNimbostratus
    Aug 21, 2013

    Hi Rob,

     

    If you are using Cookie Persistence then the system should not have any persistence records. That information is injected into the cookie and given to the Client.

     

    Try switching our query to PERSIST_MODE_NONE and see what you get, or query a pool with an alternate persistence type that the system does track.

     

    LocalLB::Pool::get_persistence_record

     

    • Rob_125924's avatar
      Rob_125924
      Icon for Nimbostratus rankNimbostratus
      Aug 21, 2013
      You mean iwth cookie persistence there will be never any persistence records ? Is there maybe another possibility to invalidate the persitent cookie ? If I force offline the pool member then enable it again then the same vm is used. How to prevent that ?
  • Rob_125924's avatar
    Rob_125924
    Icon for Nimbostratus rankNimbostratus
    Aug 21, 2013

    Hi Michael, I get the same result if I use PERSISTENCE_MODE_NONE :-(

     

  • Michael_Yates's avatar
    Michael_Yates
    Icon for Nimbostratus rankNimbostratus
    Aug 21, 2013

    Have you tried running the query against a Pool with a source_addr Persistence?

     

  • boneyard's avatar
    boneyard
    Icon for MVP rankMVP
    Aug 22, 2013

    you could delete the cookie with an iRule, or force another load balancing attempt. setting the cookie with lower timeout might help somewhat.

     

    there are different forms of cookie persistence, in some you can have the backend server set the cookie. that might help in this scenario.

     

    but with cookie persistence you give away from control.

     

  • Rob_125924's avatar
    Rob_125924
    Icon for Nimbostratus rankNimbostratus
    Aug 23, 2013

    Hi, our new solution will be that we will remove the pool member from the pool to prevent direct connection to the member despite the member is added again and disabled. I´m not allowed to change the persistence mode therefore this will be our solution