Getting Started with PWK Labs

Play with Docker is a sandbox environment to get you started with Kubernetes Cluster on the fly. Using personal credentials is HIGHLY! discouraged.

Pre-requisite

Open up play-with-kubernetes.com on your browser

Bootstrapping the K8s Cluster:

Bring up your first k8s instance by clicking on "New Instance".

Initializes cluster master node:

kubeadm init --apiserver-advertise-address $(hostname -i)

Wait for a minute to get it completely intiliazed. This will start up API server

Start Using Your Cluster

To start using your cluster, you need to run (as a regular user):

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

Initialize cluster networking:

kubectl apply -n kube-system -f \
    "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 |tr -d '\n')"

(Optional) Create an nginx deployment:

kubectl apply -f https://raw.gi

Adding K8s Worker Nodes

Open up new instances and join the other nodes:

kubeadm join --token fb9445.c4835ebdb6a7d7e5 192.168.0.8:6443 --discovery-token-ca-cert-hashsha256:b211c43880b4419f6de772495a35ee40337a36cbac0b8af54704b84622423bf4

Displaying the Nodes

[node1 ~]$ kubectl get nodes
NAME      STATUS    ROLES     AGE       VERSION
node1     Ready     master    23m       v1.10.0
node2     Ready     <none>    13m       v1.10.0
node3     Ready     <none>    12m       v1.10.0
node4     Ready     <none>    12m       v1.10.0
[node1 ~]$

Proceed to Lab #1: Test Driving NGINX Deployment on a Single Node