This interface is used to patch upgrades for the Avi Load Balancer Controller. What to read next Patch Upgrade using UIPatch Upgrade involves uploading the patch image for the controller and service engines. Patch Upgrade using CLIUse the upgrade controller image_ref <image name> controller_patch_ref <Controller patch image command to upgrade the Avi Load Balancer Controller with a patch. Patch Upgrade using REST APIThis section describes the using Avi Load Balancer REST API. Parent topic: Patch Guide