Taint the nodes ( worker2 ) kubectl taint nodes worker2 app=myapp:NoSchedule
kubectl describe nodes worker2 | grep -i taint
kubectl taint nodes worker2 app-
kubectl apply -f 01-helloworld.yaml
kubectl get pods -o wide
kubectl get nodes
kubectl taint node worker2 app=myapp:NoSchedule
kubectl describe node worker2 | grep -i taint
kubectl get pods -o wide
kubectl scale --replicas=10 deploy helloworld-deployment
kubectl get pods -o wide
kubectl scale --replicas=1 deploy helloworld-deployment
kubectl get pods -o wide
kubectl scale --replicas=5 deploy helloworld-deployment
kubectl get pods -o wide
kubectl delete -f 01-helloworld.yaml
kubectl apply -f 02-helloworld-toleration.yaml
kubectl get pods -o wide
kubectl scale --replicas=10 deploy toleration-deployment
kubectl delete -f 02-helloworld-toleration.yaml
kubectl taint node worker2 example=pp:NoSchedule
kubectl describe nodes worker2 | grep -iA10 taint
kubectl apply -f 02-helloworld-toleration.yaml
kubectl get pods -o wide
kubectl describe nodes worker2 | grep -iA5 taint
kubectl apply -f 03-helloworld-toleration-2.yaml
kubectl get pods -o wide
kubectl apply -f 04-helloworld-toleration-3.yaml
If any one the tolerations matches with the tained node(1 tained node) then the 04 example will be scheduled in that
worker node .
If multiple tolerations are there in yaml it works like a OR bitwise operator
kubectl get pods -o wide
kubectl taint node worker1 example2=example2-key:NoExecute
kubectl describe node master | grep -i taint
kubectl apply -f 05-helloworld-ds.yaml
kubectl describe node | grep -i taint
kubectl taint node worker2 app-
kubectl taint node worker1 example2-
kubectl describe node | grep -i taint
kubectl taint node worker2 example-
kubectl delete -f 18-Taint-and-Toleration/
