Overview of hybrid cloud node pools

Feature

Node pools

Hybrid cloud node pools

Create, edit, delete, and view

• Create node pools in the console and configure basic information, network settings, instance specifications, storage settings, and the number of expected nodes.

• Modify some configurations of existing node pools. For more information about the editable configuration items and notes, see the referenced document.

• Delete node pools when they are no longer needed. The behavior of node release is affected by whether the expected number of nodes is enabled for the node pool and the billing method of the nodes.

• View the details of a node pool, including basic configuration information, resource monitoring dashboards, node lists, and scaling activities.

For more information, see Create and manage a node pool.

• Create a hybrid cloud node pool in the console and configure its basic information and network settings.

• Modify some configurations of an existing hybrid cloud node pool.

• Delete a hybrid cloud node pool when its nodes are no longer needed.

• View the details of a hybrid cloud node pool, including basic configuration information, resource monitoring dashboards, and the hybrid cloud node list.

For more information, see Create and manage a hybrid cloud node pool.

Manual or automatic scaling

• Manually adjust the expected number of nodes in a node pool to scale it in or out. This keeps the number of nodes at the desired level and saves resource costs.

  Some non-standard removal, modification, or release operations may prevent the node pool from scaling out as expected. For more information, see the referenced document.

• Configure an automatic scaling solution for nodes. This automatically scales node resources when the cluster's capacity planning cannot meet application pod scheduling needs.

For more information, see Manually scale a node pool and Node scaling.

Not supported

Add existing nodes

Use the add existing nodes feature to add a purchased ECS instance to an ACK cluster as a worker node, or to rejoin a worker node to a node pool after removing it. This feature has some limits and notes. For more information, see the referenced document.

For more information, see Add existing nodes to an ACK cluster.

You must first register your hybrid cloud nodes as Alibaba Cloud managed instances before you can add them to an ACK cluster for unified management.

For more information, see Add a hybrid cloud node.

Remove nodes

If you no longer need certain nodes, remove them from the cluster or node pool. Follow the standard procedure for removal to avoid unexpected behavior.

For more information, see Remove nodes.

If some hybrid cloud nodes are no longer needed, you can remove them from the cluster or the hybrid cloud node pool.

For more information, see Remove a hybrid cloud node.

Upgrade the kubelet version

You can automatically upgrade clusters to automatically upgrade the kubelet and runtime.

Upgrade the kubelet and containerd versions of nodes in a node pool.

For more information, see Upgrade a node pool.

Upgrade the kubelet and containerd versions of hybrid cloud nodes in a hybrid cloud node pool.

Change the operating system

Upgrade the operating system version or change the operating system type. For example, switch an EOL operating system to ContainerOS or Alibaba Cloud Linux.

For more information, see Change the operating system of nodes in a node pool.

Not supported

Fix CVE vulnerabilities

You can enable automated O&M capabilities

Manually scan for CVE vulnerabilities and fix security vulnerabilities in the node operating system. Some CVE vulnerability fixes require a node restart. For more information about the feature and related notes, see the referenced document.

For more information, see Manually fix OS CVEs.

Provides CVE vulnerability scanning and fixing solutions for Kubernetes components such as containerd and kubelet in a hybrid cloud node pool.

Customize kubelet parameters for a node pool

Customize kubelet parameters for nodes at the node pool level to adjust node behavior. For example, adjust cluster resource reservation to manage resource usage.

For more information, see Customize the kubelet configurations of a node pool.

Customize the kubelet parameters for hybrid cloud nodes at the hybrid cloud node pool level to adjust node behavior. For example, you can adjust cluster resource reservations to manage resource usage.

Customize OS parameters for a node pool

Customize OS parameters for nodes at the node pool level to optimize system performance.

For more information, see Manage OS parameters of a node pool.

You can use Cloud Assistant to run preset commands for kernel parameter tuning.