az hdinsight --help Manage HDInsight resources.

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Group
    az hdinsight : Manage HDInsight resources.

Subgroups:
    application                : Manage HDInsight applications.
    monitor                    : Manage Azure Monitor logs integration on an HDInsight cluster.
    script-action              : Manage HDInsight script actions.

Commands:
    create                     : Create a new cluster.
    delete                     : Deletes the specified HDInsight cluster.
    list                       : List HDInsight clusters in a resource group or subscription.
    list-usage                 : Lists the usages for the specified location.
    resize                     : Resizes the specified HDInsight cluster to the specified size.
    rotate-disk-encryption-key : Rotate the disk encryption key of the specified HDInsight cluster.
    show                       : Gets the specified cluster.
    update                     : Patch HDInsight cluster with the specified parameters.
    wait                       : Place the CLI in a waiting state until an operation is complete.