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AVEVA™ PI System™ Feedback Portal

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We created this site to hear your enhancement ideas, suggestions and feedback about AVEVA products and services. All of the feedback you share here is monitored and reviewed by the AVEVA product managers.

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Status Completed
Created by sahilp
Created on Jul 14, 2023

Server level failover config logic

Its great that v1.4 of the opc ua adapter supports server level failover, and its as simple as adding a single entry in the data source JSON. The problem is that there is still only a single server URI which is explicitly provided at the config stage. There should be a possibility for the user to provide both (or all) server URIs explicitly at config time.


Use case:-

Consider a pair of ua servers called A and B. They are perfectly set up for opc ua redundancy. In the adapter we set the server URI to point at server A. What happens if server A is not reachable at the same time that the adapter starts up? Because the adapter depends on getting the array of redundant servers from the opc ua server itself, when the server is not reachable the adapter will not know that server B is sitting there with lots of good data, and just waiting for the adapter to connect. In the meantime the adapter is sitting doing nothing because server A is not available.

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  • Admin
    Jiyeon Hwang
    Reply
    |
    Nov 30, 2023

    To close the loop on this idea, we have incorporated more flexible server-level failover handling with the release of AVEVA Adapter for OPC UA 1.4.1.32.

  • Admin
    Jiyeon Hwang
    Reply
    |
    Jul 14, 2023

    Thank you for your input, Sahil. We are working on improving server-level failover functionality to provide more flexibility to the user. This enhancement is in development and will be included in the next release of the Adapter for OPC UA (planned for next month).