Kubernetes and automation - playground

About

• Create virtual machine with Vagrant
• Prepare machine for Kubernetes with Ansible
• Deploy simple micro-blog python app with Helm chart

Example usage

Prerequisites

• Set proper network config in Vagrantfile
• Set proper values in provision/group_vars/all.yml

Create cluster

vagrant up --provider=virtualbox

Access cluster

# Set kubeconfig
export KUBECONFIG="$(pwd)/k8s/.kube/config"

# Show pods info
kubectl get pods --all-namespaces

Play around with micro-blog app

# Get data
export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=micro-blog" -o jsonpath="{.items[0].metadata.name}");
export CONTAINER_PORT=$(kubectl get pod --namespace default $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}");

# Visit http://127.0.0.1:8000
kubectl --namespace default port-forward $POD_NAME 8000:$CONTAINER_PORT

Destroy cluster

vagrant destroy -f