Create a node pool

This page describes how to create a node pool.

Before you begin

This page assumes you are familiar with the cluster autoscaler. For more information, see Cluster autoscaler .

Customize network security groups

To customize a network security group (NSG) for a node pool, see Network security groups .

Create a node pool

Before you create a node pool, you need the following:

  • Permissions to use the az command-line tool to retrieve an Azure subnet ID.
  • Access to the cluster's SSH public key.

To create a node pool, run the following commands:

  1. Save your Azure VNet subnet ID and SSH public key to environment variables:

      SUBNET_ID 
     = 
     $( 
    az  
    network  
    vnet  
    subnet  
    show  
     \ 
      
    --resource-group = 
     VNET_RESOURCE_GROUP_NAME 
      
    --vnet-name = 
     VNET_NAME 
      
     \ 
      
    --name  
    default  
    --query  
     "id" 
      
    -otsv ) 
     SSH_PUBLIC_KEY 
     = 
     $( 
    cat  
     KEY_PATH 
    .pub ) 
     
    

    Replace the following:

    • VNET_RESOURCE_GROUP_NAME : the resource group name that holds VNet
    • VNET_NAME : the name of your VNet
    • KEY_PATH : the path to your key pair
  2. Create a node pool with the Google Cloud CLI:

     gcloud  
    container  
    azure  
    node-pools  
    create  
     NODE_POOL_NAME 
      
     \ 
      
    --cluster  
     CLUSTER_NAME 
      
     \ 
      
    --location  
     GOOGLE_CLOUD_LOCATION 
      
     \ 
      
    --node-version  
     1 
    .32.4-gke.200  
     \ 
      
    --vm-size  
     VM_SIZE 
      
     \ 
      
    --max-pods-per-node  
     110 
      
     \ 
      
    --min-nodes  
     MIN_NODES 
      
     \ 
      
    --max-nodes  
     MAX_NODES 
      
     \ 
      
    --ssh-public-key  
     " 
     ${ 
     SSH_PUBLIC_KEY 
     } 
     " 
      
     \ 
      
    --subnet-id  
     " 
     ${ 
     SUBNET_ID 
     } 
     " 
     
    

    Replace the following:

    • NODE_POOL_NAME : a unique name for your node pool—for example, node-pool-1
    • CLUSTER_NAME : the name of your GKE on Azure cluster
    • GOOGLE_CLOUD_LOCATION : the Google Cloud location that manages your cluster
    • VM_SIZE : a supported Azure VM size
    • MIN_NODES : the minimum number of nodes in the node pool—for more information, see Cluster autoscaler
    • MAX_NODES : the maximum number of nodes in the node pool
  3. Check the status of your node pool:

     gcloud  
    container  
    azure  
    node-pools  
    describe  
     NODE_POOL_NAME 
      
     \ 
      
    --cluster  
     CLUSTER_NAME 
      
     \ 
      
    --location  
     GOOGLE_CLOUD_LOCATION 
     
    

    Replace the following:

    • NODE_POOL_NAME : a unique name for your node pool—for example, node-pool-1
    • CLUSTER_NAME : the name of your GKE on Azure cluster
    • GOOGLE_CLOUD_LOCATION : the Google Cloud location that manages your cluster

    The output includes the status of your node pool, including if it is PROVISIONING or RUNNING .

Create a node pool in a specific zone

To create a node pool in a specific Azure availability zone, pass the --azure-availability-zone flag to the Google Cloud CLI when you create the node pool.

To create a node pool in a specific Azure availability zone with the Google Cloud CLI, run the following command:

 gcloud  
container  
azure  
node-pools  
create  
 NODE_POOL_NAME 
  
 \ 
  
--cluster  
 CLUSTER_NAME 
  
 \ 
  
--location  
 GOOGLE_CLOUD_LOCATION 
  
 \ 
  
--node-version  
 1 
.32.4-gke.200  
 \ 
  
--vm-size  
 VM_SIZE 
  
 \ 
  
--max-pods-per-node  
 110 
  
 \ 
  
--min-nodes  
 MIN_NODES 
  
 \ 
  
--max-nodes  
 MAX_NODES 
  
 \ 
  
--azure-availability-zone  
 AZURE_ZONE 
  
 \ 
  
--ssh-public-key  
 " 
 ${ 
 SSH_PUBLIC_KEY 
 } 
 " 
  
 \ 
  
--subnet-id  
 " 
 ${ 
 SUBNET_ID 
 } 
 " 
 

Replace the following:

  • NODE_POOL_NAME : a unique name for your node pool—for example, node-pool-1
  • CLUSTER_NAME : the name of your cluster
  • GOOGLE_CLOUD_LOCATION : the Google Cloud location that manages your cluster
  • VM_SIZE : a supported Azure VM size
  • MIN_NODES : the minimum number of nodes in the node pool—for more information, see Cluster autoscaler
  • MAX_NODES : the maximum number of nodes in the node pool
  • AZURE_ZONE : the Azure availability zone where GKE on Azure launches the node pool— for example, 3

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