assembly kubernetes master node contains:
. 1, Kube-apiserver: cluster core cluster API interface, the cluster hub various components of communication; cluster security control;
2, Kube-Scheduler: cluster scheduler, according to node load (CPU, memory, storage, , policies, etc.) will pod assigned to the appropriate node.
3, kube-controller-manager: Cluster Status Manager. When the state of the cluster and the cluster expectations are not at the same time, the controller will be based on the existing strategy to restore it to the specified state.
kube-scheduler, kube-controller- manager and kube-apiserver three functions are closely related, the former need to be deployed on the same machine.
Note: Only one cluster kube-scheduler, kube-controller-manager process is working, if you run more than is required to produce a leader elected