I am currently trying to form a high availability Kubernetes cluster having 4 worker nodes and 3 master in on-premise server. I learned about implementation of high availability cluster by checking its documentation. I have installed HAProxy 1.8.3. While deploying kubernetes using kubeadm, installation is failing with error api server timeout. So, when i checked my telnet connection from master to HAProxy ip on 6443, Connection closed by foreign host. Can anyone help me on this problem?