Abstract: Methods, non-transitory computer readable media, and configuration management server device that obtain, via one or more communication networks, configuration data from network devices. A portion of the configuration data obtained from one or more of the network devices is in a first native format and another portion of the configuration data obtained from another one or more of the network devices is in a second native format different from the first native format. The configuration data in the first and second native formats is converted into a common format. Stored configuration rules are applied to the converted configuration data in the common format to determine when at least one of the configuration rules has been violated. A notification including an indication of the configuration rule is generated and output, via an interactive dashboard graphical user interface (GUI), when the determination indicates that the configuration rule has been violated.