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Remediation

Alias IPs cannot be enabled on an existing cluster. To use Alias IPs, you must create a new cluster with the feature enabled.

Create a New Cluster with Alias IPs Enabled​

From gcloud CLI​

  1. Run the following command to create a new GKE cluster with the --enable-ip-alias flag

    gcloud container clusters create {{new-cluster-name}} \
        --location {{location}} \
        --enable-ip-alias

    Adjust other flags (e.g., region, node pool size, network settings) to match your workload requirements.

  2. Migrate workloads to the new cluster

    Reconfigure your deployments and services to target the newly created cluster. Update your kubeconfig to point to the new cluster.

  3. Validate workloads and configurations

    • Ensure applications are running as expected in the new cluster.
    • Confirm monitoring, logging, and networking rules are correctly applied.
    • Perform backups of workloads and configurations before decommissioning the old cluster.

  4. Delete the old cluster

    Once workloads have been fully migrated and validated, delete the old cluster:

    gcloud container clusters delete {{old-cluster-name}} \
        --location {{location}}