Manage node pools

Create a node pool

1. Log on to the ACK console.
2. In the left-side navigation pane of the ACK console, click Clusters.
3. On the Clusters page, find the cluster that you want to manage and click the name of the cluster or click Details in the Actions column. The details page of the cluster appears.
4. In the left-side navigation pane of the details page, choose Nodes > Node Pools.
5. In the upper-right corner of the Node Pools page, click Create Node Pool.
   In the upper-right corner of the Node Pools page, you can also click Create Managed Node Pool to create a managed node pool, or click Configure Auto Scaling to create an auto-scaling node pool.
6. In the Create Node Pool dialog box, configure the node pool.
   For more information, see Create a managed Kubernetes cluster. The following table describes some of the parameters.

   Parameter	Description
   Quantity	Specify the initial number of nodes in the node pool. If you do not want to create nodes in the node pool, set this parameter to 0.
   Billing Method	You can select Pay-As-You-Go, Subscription, and Preemptible Instance. For more information, see Instance purchasing options.
   Auto Scaling	Select Enable Auto Scaling to enable auto scaling of the node pool. For more information, see Auto scaling of nodes.
   Operating System	Select the node operating system. The CentOS, Alibaba Cloud Linux, and Windows operating systems are supported.
   Public IP	If you select Assign a Public IPv4 Address to Each Node, public IPv4 addresses are assigned to the nodes in the node pool. You can connect to the nodes by using the assigned IP addresses. For more information about public IP addresses, see Public IP addresses. Notice If you select Assign a Public IPv4 Address to Each Node, do not select Associate EIP when you configure an auto-scaling node pool. Otherwise, nodes cannot be added to the node pool.
   ECS Label	You can add labels to the ECS instances.
   Node Label	You can add labels to the nodes in the node pool. Note If you select Set New Nodes to Unschedulable, the nodes are unschedulable when they are added to the cluster. You can go to the Nodes page and set the nodes to schedulable.
   Custom Resource Group	You can specify a resource group for scale-out events. When the node pool is scaled out, nodes from the specified resource group are added to the node pool.

7. Click Confirm Order.
   On the Node Pools page, if the state of the node pool is initializing, it indicates that the node pool is being created. After the node pool is created, the state of the node pool changes to active.

Scale out a node pool

1. Log on to the ACK console.
2. In the left-side navigation pane of the ACK console, click Clusters.
3. On the Clusters page, find the cluster that you want to manage and click the name of the cluster or click Details in the Actions column. The details page of the cluster appears.
4. In the left-side navigation pane of the details page, choose Nodes > Node Pools.
5. Find the node pool that you want to scale out and click Scale Out in the Actions column.
6. In the dialog box that appears, set the scale-out parameters.
   For more information, see Create a node pool. The following list describes some of the parameters:

   • Nodes to Add: the number of nodes that you want to add to the node pool. You can add up to 500 nodes at a time.
   • ECS Label: Add labels to the ECS instances.
   • Node Label: Add labels to the nodes to be added to the cluster.
     Note

     • If you select Add Labels and Taints to Existing Nodes, the modifications of labels and taints are synchronized to existing nodes in the node pool. This does not affect the labels and taints that you previously added to the existing nodes.

     • If you select Set New Nodes to Unschedulable, the nodes are unschedulable when they are added to the cluster. You can go to the Nodes page and set the nodes to schedulable.

   • Taints: You can add taints to the nodes to be added to the node pool.
7. Click Submit.
   On the Node Pools page, the state of the node pool is scaling. This indicates that the scale-out event is in progress. After the scale-out event is completed, the state of the node pool changes to active.

Edit a node pool

Find the node pool that you want to edit and click Edit in the Actions column. For more information about the parameters, see Create a node pool. The following list describes some of the parameters:

• Operating System: Change the operating system image version for the nodes.
• ECS Label: Add labels to the ECS instances.
• Node Label: Add labels to the nodes in the node pool.
  Note

  • If you select Add Labels and Taints to Existing Nodes, the modifications of labels and taints are synchronized to existing nodes in the node pool. This does not affect the labels and taints that you previously added to the existing nodes.

  • If you select Set New Nodes to Unschedulable, the nodes are unschedulable when they are added to the cluster. You can go to the Nodes page and set the nodes to schedulable.

• Taints: Add taints to the nodes.

What to do next