Upgrading Control Plane Version

Currently, our VKS system has supported you to upgrade Control Plane Version, you can:

• Upgrade to a newer Minor Version (e.g. 1.24 to 1.25)

• Upgrade to a newer Patch Version (for example: 1.24.2-VKS.100 to 1.24.5-VKS.200)

To upgrade the Control Plane version, you can follow these instructions:

Step 1: Visit https://vks.console.vngcloud.vn/overview

Step 2: At the Overview screen , select the Kubernetes Cluster menu.

Step 3: Select the icon and select Upgrade control plane version to upgrade the control plane version.

Step 4: You can select a new version for the control plane. The new version needs to be valid and compatible with the current version of the cluster. Specifically: you can choose:

• Upgrade to a newer Minor Version (e.g. 1.24 to 1.25)

• Upgrade to a newer Patch Version (for example: 1.24.2-VKS.100 to 1.24.5-VKS.200)

Step 4: The VKS system will upgrade the Control Plane components of the Cluster to the new version. After the upgrade is complete, the Cluster state returns to ACTIVE .

Attention:

• Upgrading Control Plane Version is optional and independent of upgrading Node Group Version. However, Control Plane Version and Node Group Version in the same Cluster cannot differ by more than 1 minor version. Besides, the VKS system automatically upgrades Control Plane Version when the current K8S Version used for your Cluster exceeds the supplier's support period.

• During the Control Plane Version upgrade, you cannot perform other actions on your Cluster.

• Below are a few notes before, during and after the upgrade process, please refer to:

Before getting into work:

• Back up data: You should back up cluster data before upgrading to ensure safety in case the upgrade fails.

• Check the current version: Visit Releases for a list of supported versions. Select a new version that is valid and compatible with the current version of the cluster.

• Ensure cluster availability: Cluster must be in active state (ACTIVE) and all nodes must be HEALTHY.

• Stop running tasks: Stop running tasks on the cluster to avoid affecting the upgrade process.

While doing:

• Monitor cluster status: Monitor cluster status during the upgrade process. The cluster status will change to UPDATING and after completion will return to ACTIVE.

• Check system log: Check the system log for any errors or warnings during the upgrade process.

After implementation:

• Check cluster availability: Confirm that the cluster has been upgraded successfully and all nodes are operating normally.

• Test applications: Test applications running on the cluster to ensure they work properly after the upgrade.

Note:

• Upgrading Control Plane Version may take some time depending on the size and complexity of the cluster.

• In some rare cases, the Control Plane Version upgrade may fail. If this happens, the VKS system will automatically rollback the cluster to the current version.