Kubernetes API Version

01 Sign in to the Azure Management Console.

02 Navigate to All resources blade at https://portal.azure.com/#view/HubsExtension/BrowseAll to access all your Microsoft Azure cloud resources.

03 Choose the Azure subscription that you want to access from the Subscription filter box and choose Apply.

04 From the Type filter box, select Kubernetes service and choose Apply to list the Azure Kubernetes Service (AKS) clusters available in the selected subscription.

05 Click on the name (link) of the AKS cluster that you want to examine.

06 In the resource navigation panel, under Settings, select Cluster configuration, and check the version of the Kubernetes API installed on your cluster. If the following message is not displayed within the Kubernetes version section: This cluster is using the latest available version of Kubernetes and the Upgrade version button is available, the selected Azure Kubernetes Service (AKS) cluster is not using the latest available version of the Kubernetes API.

07 Repeat steps no. 5 – 7 for each AKS cluster provisioned in the selected Azure subscription.

08 Repeat steps no. 3 – 8 for each subscription created in your Microsoft Azure cloud account.

01 Run aks list command (Windows/macOS/Linux) using custom query filters to list the name and the associated resource group for each Azure Kubernetes Service (AKS) cluster available in the current subscription:

az aks list
  --output table
  --query '[*].{name:name, resourceGroup:resourceGroup}'

02 The command output should return the requested AKS cluster names:

Name                     ResourceGroup
----------------------   ------------------------------
cc-project5-aks-cluster  cloud-shell-storage-westeurope
cc-data-mining-cluster   cloud-shell-storage-westeurope

03 Run aks get-upgrades command (Windows/macOS/Linux) using the name of the AKS cluster that you want to examine and its associated resource group as the identifier parameters to describe the version of the Kubernetes API installed on the cluster and the latest Kubernetes API version(s) available for upgrade:

az aks get-upgrades
  --name cc-project5-aks-cluster
  --resource-group cloud-shell-storage-westeurope
  --output table

04 The command output should return a table with the requested Kubernetes API details:

Name     ResourceGroup                   MasterVersion    Upgrades
-------  ------------------------------  ---------------  --------------
default  cloud-shell-storage-westeurope  1.25.6           1.26.0, 1.26.3

05 Repeat step no. 3 and 4 for each AKS cluster available within the current Azure subscription.

06 Repeat steps no. 1 – 5 for each subscription created in your Microsoft Azure cloud account.

01 Sign in to the Azure Management Console.

02 Navigate to All resources blade at https://portal.azure.com/#view/HubsExtension/BrowseAll to access all your Microsoft Azure cloud resources.

03 Choose the Azure subscription that you want to access from the Subscription filter box and choose Apply.

04 From the Type filter box, select Kubernetes service and choose Apply to list the Azure Kubernetes Service (AKS) clusters available in the selected subscription.

05 Click on the name (link) of the AKS cluster that you want to upgrade.

06 In the resource navigation panel, under Settings, select Cluster configuration and choose Upgrade version.

07 Select the latest version of the Kubernetes API from the Kubernetes version dropdown list and choose Upgrade control plane + all node pools for Upgrade scope. Choose Save to apply the changes and start the Kubernetes API upgrade process.

08 Repeat steps no. 5 – 7 for each AKS cluster that you want to relaunch, available in the selected subscription.

09 Repeat steps no. 3 – 8 for each subscription created in your Microsoft Azure cloud account.

01 Run aks upgrade command (Windows/macOS/Linux) to upgrade the selected AKS cluster to the latest version of the Kubernetes API. The upgrade will roll out safely in stages so your container applications can continue to run while the upgrade is in progress:

az aks upgrade 
  --name cc-project5-aks-cluster 
  --resource-group cloud-shell-storage-westeurope 
  --kubernetes-version 1.26.3

02 The aks upgrade command request should ask for your confirmation. Press y twice to confirm:

Kubernetes may be unavailable during cluster upgrades.
Are you sure you want to perform this operation? (y/n): y
Since control-plane-only argument is not specified, this will upgrade the control plane AND all nodepools to version 1.26.3. Continue? (y/n): y

03 Once the upgrade process is completed, the command output should return the information available for the modified cluster:

{
	"aadProfile": null,
	"addonProfiles": {
		"azureKeyvaultSecretsProvider": {
			"config": null,
			"enabled": false,
			"identity": null
		},
		"azurepolicy": {
			"config": null,
			"enabled": false,
			"identity": null
		}
	},
	"apiServerAccessProfile": null,
	"autoUpgradeProfile": {
		"upgradeChannel": "none"
	},
	"azureMonitorProfile": null,
	"currentKubernetesVersion": "1.26.3",
	"disableLocalAccounts": false,
	"diskEncryptionSetId": null,
	"dnsPrefix": "cc-project5-aks-cluster-dns",
	"enablePodSecurityPolicy": null,
	"enableRbac": true,
	"extendedLocation": null,
	"fqdn": "cc-project5-aks-cluster-dns-abcd1234.hcp.westeurope.azmk8s.io",
	"fqdnSubdomain": null,
	"httpProxyConfig": null,
	"kubernetesVersion": "1.26.3",
	"linuxProfile": null,
	"location": "westeurope",
	"maxAgentPools": 100,
	"name": "cc-project5-aks-cluster",
	"nodeResourceGroup": "MC_cloud-shell-storage-westeurope_cc-project5-aks-cluster_westeurope",
	"oidcIssuerProfile": {
		"enabled": false,
		"issuerUrl": null
	},
	"podIdentityProfile": null,
	"powerState": {
		"code": "Running"
	},
	"privateFqdn": null,
	"privateLinkResources": null,
	"provisioningState": "Succeeded",
	"publicNetworkAccess": null,
	"resourceGroup": "cloud-shell-storage-westeurope",
	"securityProfile": {
		"azureKeyVaultKms": null,
		"defender": null,
		"imageCleaner": null,
		"workloadIdentity": null
	},
	"servicePrincipalProfile": {
		"clientId": "msi",
		"secret": null
	},
	"sku": {
		"name": "Base",
		"tier": "Free"
	},
	"storageProfile": {
		"blobCsiDriver": null,
		"diskCsiDriver": {
			"enabled": true
		},
		"fileCsiDriver": {
			"enabled": true
		},
		"snapshotController": {
			"enabled": true
		}
	},
	"supportPlan": "KubernetesOfficial",
	"systemData": null,
	"tags": null,
	"type": "Microsoft.ContainerService/ManagedClusters",
	"windowsProfile": null,
	"workloadAutoScalerProfile": {
		"keda": null
	}
}

04 Repeat steps no. 1 – 3 for each AKS cluster deployed within the current subscription.

05 Repeat steps no. 1 – 4 for each subscription created in your Microsoft Azure cloud account.