From whatever i read, i could not find a way to connect to master node in Azure kubernetes Service. I have a requirement to read some parameters like 'enable-admission-plugins' which is possible from master node. Is there any third party api available to get this info.
More specific i need to read the files 'kube-apiserver.yaml', 'kube-controller-manager.yaml'
No, this is not possible. Masters are managed by Microsoft and you dont have access to them. All the configurations are to be done through the AKS api (mostly when you create it).
Azure Kubernetes Service (AKS) makes it simple to deploy a managed Kubernetes cluster in Azure. AKS reduces the complexity and operational overhead of managing Kubernetes by offloading much of that responsibility to Azure. As a hosted Kubernetes service, Azure handles critical tasks like health monitoring and maintenance for you. The Kubernetes masters are managed by Azure. You only manage and maintain the agent nodes.