API Connect

API Connect

Join this online group to communicate across IBM product users and experts by sharing advice and best practices with peers and staying up to date regarding product enhancements.


#API Connect
#Applicationintegration
#APIConnect
 View Only

  • 1.  DataPower Load Balancer Group Configuration issues

    Posted 02/20/26 01:20 PM
    Hi Team,
     
    We are trying to implement load balancing through the DataPower Gateway for two backend endpoints (two ESB servers).
     
    So far, we have:
     
    • Configured a Load Balancer Group
    • Added the backend server IPs as static group members
    • Created an XML Manager and associated the Load Balancer Group with it
     
    However, when we attempt to invoke the backend service using the Load Balancer Group name, we receive the following error:
     
    "Could not connect to the backend URL."
     
    Could anyone please advise what might be missing or incorrectly configured?
     
    Thank you


    ------------------------------
    lahiru sampath
    ------------------------------


  • 2.  RE: DataPower Load Balancer Group Configuration issues

    Posted 02/23/26 02:32 AM

    Hi,

    I have never configured this myself, but I don't think it is possible to just directly configure the LB group and then use it from APIC.

    This old link contains a PoC type of thing that showcases how to use the LB group via extensions, but again don't know how valid this still is. 

    Hope this helps.

    https://github.com/ibmArtifacts/APIC-LBG-Gateway-Extension



    ------------------------------
    Hermanni Pernaa
    Solutions Architect
    Digia Plc
    Helsinki
    ------------------------------



  • 3.  RE: DataPower Load Balancer Group Configuration issues

    Posted 02/23/26 02:54 PM
    Thanks a lot for sharing this, I really appreciate it.
     
    I went ahead and tried the approach from the PoC link you mentioned, configuring the LB group via extensions and then referencing it from APIC - and I can confirm it worked successfully on my side.
     
    Your input was really helpful in pointing me in the right direction. Thanks again for the support!


    ------------------------------
    lahiru sampath
    ------------------------------

    Original Message


  • 4.  RE: DataPower Load Balancer Group Configuration issues

    Posted 02/25/26 01:22 AM
    Hi Hermanni,
     
    We are currently facing a different issue. At the moment, everything is working fine. However, when we publish an API, some configurations in the DataPower Gateway API Gateway (Load Balancer Group,http protocoal handler, API Collection) are being removed, and the same error I mentioned earlier occurs again.
    Thanks.


    ------------------------------
    lahiru sampath
    ------------------------------

    Original Message


  • 5.  RE: DataPower Load Balancer Group Configuration issues

    Posted 02/27/26 01:41 AM

    Hi Lahiru,

    It seems you may have configured the Load Balancer Group and other objects directly in DataPower rather than through the gateway extension. Modifying any configurations in DataPower that are managed by APIC is not supported, these settings will revert to their defaults whenever a sync event (such as an API publish) occurs.

    The solution is to use the gateway extension. When properly packaged and applied via the gateway extension, these settings will be preserved across publish and sync events.
    I'd recommend reviewing your extension .zip and confirm it includes all the necessary objects before upload to Cloud manager.

    You can refer the following links to crate and upload the gateway extensions.

    https://www.ibm.com/docs/en/api-connect/software/10.0.8_lts?topic=behavior-gateway-extension-guidelines-datapower-api-gateway

    https://www.ibm.com/docs/en/api-connect/software/10.0.8_lts?topic=behavior-configuring-your-gateway-server-extensions



    ------------------------------
    Nirmalan
    Integration Lead
    N-Able
    ------------------------------

    Original Message


  • 6.  RE: DataPower Load Balancer Group Configuration issues

    Posted 03/12/26 12:12 AM

    Hi Nirmalan,

    Thank you very much, and now it's working.



    ------------------------------
    lahiru sampath
    ------------------------------

    Original Message


Related Content