= A Kubernetes cluster is a group of machines that run containerized applications as part of a distributed system. A Kubernetes cluster consists of two types of nodes: worker nodes and master nodes. Worker nodes are the machines that run the actual workloads, such as pods, which are groups of containers. Master nodes are the machines that run the control plane, which is responsible for managing the cluster state, scheduling workloads, and enforcing policies. A cluster must have at least one master node and one or more worker nodes. A cluster can also have multiple master nodes for high availability and load balancing. References = What is Kubernetes Cluster?, Kubernetes Nodes - The Complete Guide, Nodes | Kubernetes