Multi-tier-app

Topology

Procedure.

To bring up all the pods and services, Run the following script.
./run_all.sh

This should bring up all the pods. You can monitor it using:

kubectl get pods -o wide
kubectl get svc

Taint and untaint a node.

You can taint or untaint a node from a master using the following scripts.

[root@5b6s16 ~]# kubectl get nodes
NAME                     STATUS     ROLES     AGE       VERSION
5b6s16                   NotReady   master    4d        v1.9.2
5b6s17                   Ready      <none>    4d        v1.9.2
sanfrancisco-compute-1   Ready      <none>    17h       v1.9.2

To taint a node named sanfrancisco-compute-1 use:

cd Multi-tier-app/
./taint_nodes.sh sanfrancisco-compute-1

To untaint the same node use:

cd Multi-tier-app/
./untaint_nodes.sh sanfrancisco-compute-1

To delete all pods except the frontend, use the following script:

cd Multi-tier-app/
./delete_pods.sh