An augmented reality (AR) diagnostic tool embodied as a software application on a portable device employs AR infrastructure to enable a user to locate a failed/malfunctioning node of a cluster and, with minimal interaction, diagnose causes and provide recommendations to repair the node. The portable device may be a computer embodied as visualization technology and configured to execute the software application. Once installed, the AR diagnostic (ARD) tool is ready for use by the user, e.g., a customer service technician, to locate and repair one or more failed cluster nodes. In response to a failure/malfunction, the cluster node sends diagnostic and configuration information (i.e., failure/malfunction information) of the failed node to an analytics service. The failure information informs the technician of the cluster failure. The technician may then activate the ARD tool and AR infrastructure to locate and repair the failed node.