Cloudera Operational Database (COD) supports rolling operating system upgrades of a COD cluster

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COD using HDFS and Object Store without Ephemeral Storage, now supports upgrading the operating system version of the database using the rolling restart mode. This ensures continuous service availability during an upgrade operation.

In CDP CLI, you need to use the --os-upgrade-only option along with the --rolling-upgrade option in the upgrade-database command.

Following is a sample command.

cdp opdb upgrade-database --environment <environment-name> --database <database-name> [--runtime <runtime-version> | --image <imageId>] --os-upgrade-only --rolling-upgrade

Documentation link: Performing a Cloudera operating system upgrade

This is available starting in COD v1.35 and you do not need to upgrade to a higher version of COD to benefit from this feature.

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