The kube-scheduler is the default scheduler for Kubernetes. It is designed such that if you prefer, you can write your own one and use that instead.
Following is the syntax :
The scheduling life cycle :
* A pod is created and the preferred state is mentioned, and without filling the node name, it is saved to etcd
* The scheduler notices the new pod with no node bound
* It finds a suitable node for that pod
* It then informs the API server to bind the pod to the node, and next, the new desired state is saved to etcd
* Kubelets watch the pods that are bound and start the containers on the particular node
