Upgrade Tanzu Kubernetes Grid

Caution: VMware recommends not installing or upgrading to Tanzu Kubernetes Grid v1.5.0-v1.5.3, due to a bug in the versions of etcd in the versions of Kubernetes used by Tanzu Kubernetes Grid v1.5.0-v1.5.3. Tanzu Kubernetes Grid v1.5.4 resolves this problem by incorporating a fixed version of etcd. For more information, see Resolved Issues in the TKG v1.5 Release Notes.

To upgrade Tanzu Kubernetes Grid (TKG), you download and install the new version of the Tanzu CLI on the machine that you use as the bootstrap machine. You must also download and install base image templates and VMs, depending on whether you are upgrading clusters that you previously deployed to vSphere, Amazon EC2, or Azure.

After you have installed the new versions of the components, you use the tanzu mc upgrade and tanzu cluster upgrade CLI commands to upgrade management clusters and Tanzu Kubernetes clusters.

Prerequisites

Before you begin the upgrade to Tanzu Kubernetes Grid v1.5.x, you must ensure that your current deployment is Tanzu Kubernetes Grid v1.4.x. To upgrade to v1.5.x from Tanzu Kubernetes Grid versions earlier than v1.4, you must first upgrade to v1.4.x with the v1.4.x of the Tanzu CLI.

Procedure

The next sections are the overall steps required to upgrade Tanzu Kubernetes Grid. This procedure assumes that you are upgrading to Tanzu Kubernetes Grid v1.5.4.

Some steps are only required if you are performing a minor upgrade from Tanzu Kubernetes Grid v1.4.x to v1.5.x and are not required if you are performing a patch upgrade from Tanzu Kubernetes Grid v1.5.x to v1.5.y.

If you deployed the previous version of Tanzu Kubernetes Grid in an Internet-restricted environment, see Upgrading vSphere Deployments in an Internet Restricted Environment.

Download and Install the New Version of the Tanzu CLI

This step is required for both minor v1.4.x to v1.5.x and patch v1.5.x to v1.5.y upgrades.

To download and install the new version of the Tanzu CLI, perform the following steps.

  1. Delete the ~/.config/tanzu/tkg/compatibility/tkg-compatibility.yaml file.

    If you do not delete this file, the new version of the Tanzu CLI will continue to use the Bill of Materials (BOM) for the previous release. Deleting this file causes the Tanzu CLI to pull the updated BOM. You must perform this step both when upgrading from 1.4.x to 1.5.x, and when upgrading from 1.5.x to 1.5.y.

  2. Follow the instructions in Install the Tanzu CLI and Other Tools to download and install the Tanzu CLI and kubectl on the machine where you currently run your tanzu commands.

  3. After you install the new version of the Tanzu CLI, run tanzu version to check that the correct version of the Tanzu CLI is properly installed. Tanzu Kubernetes Grid v1.5.4 uses Tanzu CLI v0.11.6, based on Tanzu Framework v0.11.6.
  4. After you install kubectl, run kubectl version to check that the correct version of kubectl is properly installed.

For information about Tanzu CLI commands and options that are available, see the Tanzu CLI Command Reference.

Prepare to Upgrade Clusters on vSphere

This step is required for both minor v1.4.x to v1.5.x and patch v1.5.x to v1.5.y upgrades.

Before you can upgrade a Tanzu Kubernetes Grid deployment on vSphere, you must import into vSphere new versions of the base image templates that the upgraded management and Tanzu Kubernetes clusters will run. VMware publishes base image templates in OVA format for each supported OS and Kubernetes version. After importing the OVAs, you must convert the resulting VMs into VM templates.

This procedure assumes that you are upgrading to Tanzu Kubernetes Grid v1.5.4.

  1. Go to the Tanzu Kubernetes Grid downloads page and log in with your My VMware credentials.
  2. Download the latest Tanzu Kubernetes Grid OVAs for the OS and Kubernetes version lines that your management and Tanzu Kubernetes clusters are running.

    For example, for Photon v3 images:

    • Kubernetes v1.22.9: Photon v3 Kubernetes v1.22.9 OVA
    • Kubernetes v1.21.11: Photon v3 Kubernetes v1.21.11 OVA
    • Kubernetes v1.20.15: Photon v3 Kubernetes v1.20.15 OVA

    For Ubuntu 20.04 images:

    • Kubernetes v1.22.9: Ubuntu 2004 Kubernetes v1.22.9 OVA
    • Kubernetes v1.21.11: Ubuntu 2004 Kubernetes v1.21.11 OVA
    • Kubernetes v1.20.15: Ubuntu 2004 Kubernetes v1.20.15 OVA

    You can also download FIPS-enabled images to use with Tanzu Kubernetes Grid v1.5.3.

    Important:: Make sure you download the most recent OVA base image templates in the event of security patch releases. You can find updated base image templates that include security patches on the Tanzu Kubernetes Grid product download page.

  3. In the vSphere Client, right-click an object in the vCenter Server inventory and select Deploy OVF template.

  4. Select Local file, click the button to upload files, and navigate to a downloaded OVA file on your local machine.
  5. Follow the installer prompts to deploy a VM from the OVA.

    • Accept or modify the appliance name.
    • Select the destination datacenter or folder.
    • Select the destination host, cluster, or resource pool.
    • Accept the end user license agreements (EULA).
    • Select the disk format and destination datastore.
    • Select the network for the VM to connect to.
  6. Click Finish to deploy the VM.
  7. When the OVA deployment finishes, right-click the VM and select Template > Convert to Template.
  8. In the VMs and Templates view, right-click the new template, select Add Permission, and assign your Tanzu Kubernetes Grid user, for example, tkg-user, to the template with the Tanzu Kubernetes Grid role, for example, TKG. You created this user and role in Prepare to Deploy Management Clusters to vSphere.

Repeat the procedure for each of the Kubernetes versions for which you have downloaded the OVA file.

VMware Cloud on AWS SDDC Compatibility

If you are upgrading Tanzu Kubernetes clusters that are deployed on VMware Cloud on AWS, verify that the underlying Software-Defined Datacenter (SDDC) version used by your existing deployment is compatible with the version of Tanzu Kubernetes Grid you are upgrading to.

To view the version of an SDDC, select View Details on the SDDC tile in VMware Cloud Console and click on the Support pane.

To validate compatibility with Tanzu Kubernetes Grid, refer to the VMware Product Interoperablity Matrix.

Prepare to Upgrade Clusters on Amazon EC2

No specific action is required for either minor v1.4.x to v1.5.4 or patch v1.5.x to v1.5.y upgrades.

Amazon Linux 2 Amazon Machine Images (AMI) that include the supported Kubernetes versions are publicly available to all Amazon EC2 users, in all supported AWS regions. Tanzu Kubernetes Grid automatically uses the appropriate AMI for the Kubernetes version that you specify during upgrade.

Prepare to Upgrade Clusters on Azure

This step is required for both minor v1.4.x to v1.5.x and patch v1.5.x to v1.5.y upgrades.

Before upgrading a Tanzu Kubernetes Grid deployment on Azure, you must accept the terms for the new default VM image and for each non-default VM image that you plan to use for your cluster VMs. You need to accept these terms once per subscription.

To accept the terms:

  1. List all available VM images for Tanzu Kubernetes Grid in the Azure Marketplace:

    az vm image list --publisher vmware-inc --offer tkg-capi --all
    
  2. Accept the terms for the new default VM image:

    az vm image terms accept --urn publisher:offer:sku:version
    

    For example, to accept the terms for the default VM image in Tanzu Kubernetes Grid v1.5.4, k8s-1dot22dot9-ubuntu-2004, run:

    az vm image terms accept --urn vmware-inc:tkg-capi:k8s-1dot22dot9-ubuntu-2004:2021.05.17
    
  3. If you plan to upgrade any of your Tanzu Kubernetes clusters to a non-default Kubernetes version, such as v1.21.11 or v1.20.15, accept the terms for each non-default version that you want to use for your cluster VMs.

Upgrade Management Clusters

This step is required for both minor v1.4.x to v1.5.x and patch v1.5.x to v1.5.y upgrades.

To upgrade Tanzu Kubernetes Grid, you must upgrade all management clusters in your deployment. You cannot upgrade Tanzu Kubernetes clusters until you have upgraded the management clusters that manage them.

Follow the procedure in Upgrade Management Clusters to upgrade your management clusters.

Upgrade Workload Clusters

This step is required for both minor v1.4.x to v1.5.x and patch v1.5.x to v1.5.y upgrades.

After you upgrade the management clusters in your deployment, you can upgrade the Tanzu Kubernetes clusters that are managed by those management clusters.

Follow the procedure in Upgrade Tanzu Kubernetes Clusters to upgrade the Tanzu Kubernetes clusters that are running your workloads.

Sync Package Versions Older Than n-2

Some packages that are installed by default in the management cluster, for example, cert-manager can be installed as CLI-managed packages in workload and the shared services clusters. When the management cluster is upgraded to the latest Tanzu Kubernetes Grid release, its default packages are automatically updated.

You can run different versions of the CLI-managed packages in different workload clusters. In a workload cluster, you can run either the latest supported version of a CLI-managed package or the package’s versions in your last two previously-installed versions of Tanzu Kubernetes Grid. For example, if the latest packaged version of cert-manager is v1.1.0 and your previous two Tanzu Kubernetes Grid installations ran cert-manager v1.1.0 and v0.16.1, then you can run cert-manager versions v1.1.0 and v1.16.1 in workload clusters.

For any workload clusters that are running package versions that are more than n-2 installed Tanzu Kubernetes Grid versions older than the package versions in the management cluster, you must update the package repository (See Update a Package Repository) and then upgrade the package in the workload clusters (See Update a Package). If you do not upgrade the package version, you will not be able to update the package configuration because the package repository might not include over n-2 older version of the package.

Install NSX Advanced Load Balancer After Tanzu Kubernetes Grid Upgrade (vSphere)

If you are using NSX ALB on vSphere, follow this procedure to set it up after upgrading your Tanzu Kubernetes Grid installation to v1.5.

  1. If NSX ALB was not enabled in your Tanzu Kubernetes Grid v1.4 installation, perform the following sub-steps (If you did have NSX ALB enabled for v1.4, skip to the export commands below):

    1. Configure the Avi Controller. For more information, see Avi Controller: Clouds and subsequent sections.
    2. On your local system, open the file ~/.config/tanzu/tkg/CONFIG.YAML.

      Where CONFIG.YAML is your configuration yaml file for the management cluster.

    3. Add the Avi details in the following AVI fields, and save the file:

      AVI_CA_DATA: <AVI CERTIFICATE DATA>
      AVI_CLOUD_NAME: <YOUR CLOUD ENVIRONMENT>
      AVI_CONTROLLER: <CONTROLLER IP ADDRESS>
      AVI_DATA_NETWORK: <DATA NETWORK>
      AVI_DATA_NETWORK_CIDR: <CIDR IP ADDRESS>
      AVI_ENABLE: "true"
      AVI_LABELS: ""
      AVI_USERNAME: <YOUR USERNAME>
      AVI_PASSWORD: <PASSWORD>
      AVI_SERVICE_ENGINE_GROUP: <SE GROUP>
      

      Example for the clusterconfig.yaml file:

      AVI_CA_DATA: |-
          -----BEGIN CERTIFICATE-----
          MIICxzCCAa+gAwIBAgIUT+SWtJ1JK4...
          -----END CERTIFICATE-----
      AVI_CLOUD_NAME: Default-Cloud
      AVI_CONTROLLER: 10.83.20.229
      AVI_DATA_NETWORK: VM Network
      AVI_DATA_NETWORK_CIDR: 10.83.0.0/19
      AVI_ENABLE: "true"
      AVI_LABELS: ""
      AVI_USERNAME: admin
      AVI_PASSWORD: <encoded:QWRtaW4hMjM=>
      AVI_SERVICE_ENGINE_GROUP: Default-Group
      

      Caution: Do not set the AVI_LABELS variable in this version of Tanzu Kubernetes Grid. For more information, see Known Issues in the Tanzu Kubernetes Grid v1.5 Release Notes.

  2. Run the following commands to export the required environment variables:

    export _TKG_CLUSTER_FORCE_ROLE="management"
    export FILTER_BY_ADDON_TYPE="networking/ako-operator"
    export REMOVE_CRS_FOR_ADDON_TYPE="networking/ako-operator"
    export NAMESPACE="tkg-system"
    
  3. Run the following command to generate the manifest file:

    tanzu cluster create ${MANAGEMENT_CLUSTER_NAME} --dry-run -f ~/.config/tanzu/tkg/clusterconfigs/MANAGEMENT_CLUSTER_CONFIG.yaml --vsphere-controlplane-endpoint 1.1.1.1 > ako-operator-addon-manifest.yaml
    
  4. Run the following command to apply the changes:

    kubectl apply -f ako-operator-addon-manifest.yaml
    

    Note: See the Tanzu Kubernetes Grid v1.5 Release Notes for which Avi Controller versions are supported in this release. To upgrade the Avi Controller, see Flexible Upgrades for Avi Vantage.

Upgrade Crash Recovery and Diagnostics

This step is required for both minor v1.4.x to v1.5.x and patch v1.5.x to v1.5.y upgrades.

For information about how to upgrade Crash Recovery and Diagnostics, see Install or Upgrade the Crash Recovery and Diagnostics Binary.

What to Do Next

Examine your upgraded management clusters or register them in Tanzu Mission Control. See Examine the Management Cluster Deployment and Register Your Management Cluster with Tanzu Mission Control.

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