Setup and run a multi-node Kubernetes cluster locally with the following specs:
- Nodes: 1 master, 2 worker (ubuntu 18.04)
- Kubernetes 1.19.6
- CNI: Calico v3.17
Motivation: I needed a repeatable local Kubernetes environment to prepare for CKA exam.
- Vagrant 2.2.9+
- VirtualBox 6.1.2+
- kubectl 1.19+ (if you want to operate the cluster from your machine)
To provision the cluster run:
vagrant up
Verify the cluster (.cache directory will be created under kubernetes-demo-cluster/ in the previous step)
kubectl get nodes --kubeconfig=.cache/k8s-config.yaml
NAME STATUS ROLES AGE VERSION
master-0 Ready master 4m14s v1.19.6
worker-1 Ready <none> 2m24s v1.19.6
worker-2 Ready <none> 40s v1.19.6
Deploy Nginx Ingress Controller:
kubectl apply -f resources/base/nginx-ingress.yaml --kubeconfig=.cache/k8s-config.yaml
Deploy metrics-server (for kubectl top commands):
kubectl apply -f resources/base/metrics-server.yaml --kubeconfig=.cache/k8s-config.yaml
Execute the following command to remove the virtual machines created for the Kubernetes cluster.
vagrant destroy -f
- To install a different Kubernetes version update
K8S_VERSIONinnode/provision_node.sh - The number of worker nodes to provision is configured by
WORKERSconstant inVagrantfile - You can delete individual workers, e.g.
vagrant destroy worker-2 -f - Every node will have this directory mounted to
/vagrant - CKA exam resources: