IBM Support

PH20059: FIXED WEIGHT NOT SAVED AFTER UNQUIESCE IN STANDBY MODE

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APAR status

  • Closed as program error.

Error description

  • Set "weight 1" and "fixedweight yes" in the standby mode LB,
    and use "manager quiesce" to quiesce the server.
    
    Execution
    command:
    dscontrol server set
    CLUSTER_ADDRESS@PORT_NUMBER@SERVER_ADDRESS weight 1
    dscontrol
    server set CLUSTER_ADDRESS@PORT_NUMBER@SERVER_ADDRESS
    fixedweight yes
    dscontrol manager quiesce
    CLUSTER_ADDRESS@PORT_NUMBER@SERVER_ADDRESS
    
    When you unquiesce
    with "maneger unquiesce", the server weight is set to the
    default value.
    The weight does not change even if LB is taken
    over to change from standby mode to active mode.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server Load       *
    *                  Balancer for IPv4 and IPv6 users with high  *
    *                  availability configured                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: With fixed weights on the standby LB,   *
    *                      if the server is unquiesce, the         *
    *                      fixed weight value will be lost.        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The manager does not run on the standby LB. When a server is
    quiesced, the fixed weight value is saved by the manager but
    since it is not running on the standby, it is not saved and
    therefore not restored when the server is unquiesced.
    

Problem conclusion

  • Modified code to save the fixed weight value outside of the
    manager code so that the value is retained on the standby LB
    when the server is quiesced and then unquiesced.
    
    Fix levels:
       8.5.5.17
       9.0.5.3
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH20059

  • Reported component name

    WEBS LOAD BALAN

  • Reported component ID

    5724H8811

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-12-08

  • Closed date

    2019-12-11

  • Last modified date

    2019-12-11

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WS EDGE LB IPV4

  • Fixed component ID

    5724H8812

Applicable component levels



Document information

More support for: WebSphere Application Server
Edge Component

Software version: 8.5

Reference #: PH20059

Modified date: 11 December 2019