Enable Azure Accelerated networking on TKGI

Products

• VMware Tanzu Kubernetes Grid Integrated (TKGi)

Issue/Introduction

This article explains how to enable Accelerated Networking and Proximity Placement Groups on Kubernetes worker nodes in TKGi using a custom config.json during cluster creation.

https://docs.microsoft.com/en-us/azure/virtual-machines/co-location

Environment

TKGI

Resolution

Create a config file config.json

{
    "instance_groups":[
      {
        "name": "master",
        "vm_extension":{
           "accelerated_networking": "true"
          }
      },
      {
        "name": "worker",
        "vm_extension":{
           "accelerated_networking": "true"
          }
      }
   ]
} 

Create a cluster:

tkgi create-cluster NAME -e FQDN -p small -n1 --config-file config.json 

Once the cluster is created you can verify and get the UUID

tkgi cluster <cluster-name>

Run bosh configs and find the service instance and get the ID of the config to view settings.

bosh config <ID>

Verify the settings are in place :

            vm_extensions:
            - name: service-instance-3ffbafa6-34d1-4b35-9832-f58cc27a4c8a-master-nsgroup
              cloud_properties: {}
            - name: service-instance_3ffbafa6-34d1-4b35-9832-f58cc27a4c8a-master-vmext
              cloud_properties:
                accelerated_networking: "true"
            - name: service-instance_3ffbafa6-34d1-4b35-9832-f58cc27a4c8a-worker-vmext
              cloud_properties:
                accelerated_networking: "true"