The Cluster
Part of the Introduction to Kubernetes section of Coddy's Terminal journey. Lesson 2 of 45.
A Kubernetes cluster is a set of machines working together. The control plane makes the decisions: it stores what you asked for and decides where things run. The nodes are the machines that actually run your containers.
To see where the control plane is, run:
kubectl cluster-infoThe machines in the cluster are listed with:
kubectl get nodesEach row shows the node's NAME, its STATUS (Ready means it can run containers), its ROLES, how long it has been in the cluster (AGE) and the Kubernetes VERSION it runs.
Your practice cluster has a single node named coddy-control-plane, which acts as both the control plane and the worker. Real clusters often have dozens of nodes, but the commands are exactly the same.
Challenge
BeginnerList the nodes of your cluster with kubectl get nodes and check that the node is Ready.
Try it yourself
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Introduction to Kubernetes
Practice on your own: Terminal playground