Configure the Kubernetes services on Node

Perform the following steps to configure the kubelet on the node:

1. Edit /etc/kubernetes/kubelet to appear like this:

   ###
   # Kubernetes kubelet (node) config
   
   # The address for the info server to serve on (set to 0.0.0.0 or "" for all interfaces)
   KUBELET_ADDRESS="--address=0.0.0.0"
   
   # You may leave this blank to use the actual hostname
   KUBELET_HOSTNAME="--hostname_override=photon-node"
   
   # location of the api-server
   KUBELET_API_SERVER="--kubeconfig=/etc/kubernetes/kubeconfig"
   
   # Add your own
   #KUBELET_ARGS=""
   

2. Make sure that the api-server end-point located in /etc/kubernetes/kubeconfig, targets the api-server in the master node and does not fall into the loopback interface:

   apiVersion: v1
   clusters:
   - cluster:
       server: <ip_master_node>:8080
   

3. Start the appropriate services on the node (photon-node):

   for SERVICES in kube-proxy kubelet docker; do 
       systemctl restart $SERVICES
       systemctl enable $SERVICES
       systemctl status $SERVICES 
   done
   

4. Check to make sure that the cluster can now see the photon-node on photon-master and that its status changes to Ready.

   kubectl get nodes
   NAME                LABELS              STATUS
   photon-node          name=photon-node-label     Ready
   

   If the node status is NotReady, verify that the firewall rules are permissive for Kubernetes.

   • Deletion of nodes: To delete photon-node from your Kubernetes cluster, one should run the following on photon-master (please do not do it, it is just for information):

   kubectl delete -f ./node.json
   

Result

You should have a functional cluster. You can now launch a test pod. For an introduction to working with Kubernetes, see Kubernetes documentation.