There is a command group 'az_aks_nodepool'. This group of commands could 'commands to manage node pools in kubernetes kubernetes cluster'. The group of commands has global parameter '--debug' which means 'Increase logging verbosity to show all debug logs.'. The group of commands has global parameter '--help -h' which means 'Show this help message and exit.'. The group of commands has global parameter '--only-show-errors' which means 'Only show errors, suppressing warnings.'. The group of commands has global parameter '--output -o' which means 'Output format.'. The group of commands has global parameter '--query' which means 'JMESPath query string. See <a href="http://jmespath.org/">http://jmespath.org/</a> for more information and examples.'. The group of commands has global parameter '--subscription' which means 'Name or ID of subscription. You can configure the default subscription using `az account set -s NAME_OR_ID`.'. The group of commands has global parameter '--verbose' which means 'Increase logging verbosity. Use --debug for full debug logs.'. This group contains a child command 'az_aks_nodepool_upgrade'.The syntax is: az aks nodepool upgrade --cluster-name
                        --name
                        --resource-group
                        [--aks-custom-headers]
                        [--drain-timeout]
                        [--kubernetes-version]
                        [--max-surge]
                        [--no-wait]
                        [--node-image-only]
                        [--node-soak-duration]
                        [--snapshot-id]
                        [--yes]. The parameter '--cluster-name' is required. It is used to the cluster name.. The parameter '--name --nodepool-name -n' is required. It is used to the node pool name.. The parameter '--resource-group -g' is required. It is used to name of resource group. you can configure the default group using `az configure --defaults group=<name>`.. The parameter '--aks-custom-headers' is optional. comma-separated key-value pairs to specify custom headers.. The parameter '--drain-timeout' is optional. when nodes are drain how long to wait for all pods to be evicted.. The parameter '--kubernetes-version -k' is optional. version of kubernetes to upgrade the node pool to, such as "1.16.9".. The parameter '--max-surge' is optional. extra nodes used to speed upgrade. when specified, it represents the number or percent used, eg. 5 or 33% (mutually exclusive with "--node-image-only". see "az aks nodepool update --max-surge" to update max surge before upgrading with "--node-image-only").. The parameter '--no-wait' is optional. do not wait for the long-running operation to finish.. The parameter '--node-image-only' is optional. only upgrade agent pool's node image.. The parameter '--node-soak-duration' is optional. the amount of time (in minutes) to wait after draining a node and before reimaging it and moving on to next node.. The parameter '--snapshot-id' is optional. the source snapshot id used to upgrade this nodepool.. The parameter '--yes -y' is optional. do not prompt for confirmation.. 