Azure Kubernetes Service upgrade
Azure Kubernetes Service (AKS) cluster requires regular updates to the Kubernetes versions. Using the latest AKS version supported by Cloudera avoids compatibility issues between Cloudera Data Warehouse and Azure resources.
Using the Azure CLI or Azure portal to upgrade the AKS cluster is not supported. Cloudera Data Warehouse automatically provisions the latest supported AKS version when you activate an environment in Cloudera Data Warehouse. For more information on the AKS version, refer Version mapping for supported release.
Prerequisites and choosing a path
- Update process choice: The exact steps depend on which update path you choose (automated, semi-automated, or manual). For more information, see Backing up and restoring Cloudera Data Warehouse.
- Cloudera Data Warehouse version check: Ensure your Cloudera Data Warehouse environment is running a supported and up-to-date version. In some cases, you might need to update your Database Catalogs and Virtual Warehouses before proceeding with the backup and restore.
Steps
To upgrade to the latest AKS, you must backup, deactivate, and reactivate your Cloudera Data Warehouse environment, which can be accomplished through an automated, semi-automated, or manual process.
Follow this process to upgrade to the latest AKS version:
- Schedule downtime and inform users about the unavailability of the environment during the process.
- Take a cluster backup to preserve all configurations and metadata, and confirm the backup was successful and valid.
- Decommission the old environment by deleting Virtual Warehouses and deactivating the Cloudera Data Warehouse environment.
- Restore the environment using the backup to provision a new environment with the latest AKS version.
- Verify all components are restored and functioning correctly, then release the scheduled downtime.
