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    Realtime Compute for Apache Flink:Change a vSwitch

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    Realtime Compute for Apache Flink:Change a vSwitch

    Last Updated:Mar 26, 2026

    If you've reconfigured your IPv4 CIDR blocks, you may need to update the vSwitch associated with your Realtime Compute for Apache Flink workspace. This keeps your workspace communicating correctly within your virtual private cloud (VPC).

    Prerequisites

    Before you begin, make sure you have:

    • A Realtime Compute for Apache Flink workspace

    • A target vSwitch that meets both of the following requirements:

      • Resides in the same VPC as your workspace

      • Is in a zone supported by Realtime Compute for Apache Flink

    Change the vSwitch

    1. (Optional) Add the CIDR block of the new vSwitch to the whitelists of your upstream or downstream systems as needed.

      Note

      If you skip this step, systems that rely on IP allowlists may lose connectivity to your workspace after the vSwitch change.

    2. Log on to the Realtime Compute for Apache Flink console.

    3. Find the workspace, then in the Actions column, choose More > Modify vSwitches.

    4. In the Modify vSwitches dialog box, select the vSwitch you want to use. If the vSwitch you need is not listed, click Create vSwitch in the note at the top of the dialog box. After creating the vSwitch, click image in the upper-left corner of the list to refresh the dialog box, then select the new vSwitch.

      image

    5. Click OK.

    What's next

    By default, Realtime Compute for Apache Flink cannot access the Internet. To enable Internet access, create a NAT gateway in your VPC and add a source network address translation (SNAT) entry that binds your workspace's vSwitch to an elastic IP address (EIP). For details, see FAQ about network connectivity.