Cost optimization

# Disable Horizontal Pod Autoscaling
gcloud container clusters update <cluster-name> \
  --update-addons=HorizontalPodAutoscaling=DISABLED

# Disable Kube DNS
kubectl scale --replicas=0 kube-dns-autoscaler \
  --namespace=kube-system

# Limit Kube DNS scaling
kubectl scale --replicas=0 deployment/kube-dns-autoscaler \
  --namespace=kube-system

kubectl scale --replicas=1 deployment/kube-dns \
  --namespace=kube-system

    1  gcloud config set compute/zone us-central1-a
    2  gcloud container clusters create scaling-demo --num-nodes=3 --enable-vertical-pod-autoscaling
    3  kubectl get deployment
    4  kubectl apply -f php-apache.yaml
    5  kubectl get deployment
    6  kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=10
    7  kubectl get hpa
    8  gcloud container clusters describe scaling-demo
    9  gcloud container clusters describe scaling-demo | grep verticalPodAutoscaling
   10  gcloud container clusters describe scaling-demo | grep ^verticalPodAutoscaling
   11  gcloud container clusters describe scaling-demo | grep ^verticalPodAutoscaling -A 1
   12  gcloud container clusters describe scaling-demo | grep ^verticalPodAutoscaling -A 2
   13  kubectl create deployment hello-server --image=gcr.io/google-samples/hello-app:1.0
   14  kubectl get deployment
   15  kubectl set resources deployment hello-server --requests=cpu=450m
   16  kubectl describe pod hello-server
   17  kubectl describe pod hello-server | sed -n "/Containers:$/,/Conditions:p/"
   18  kubectl describe pod hello-server | sed -n "/Containers:$/,/Conditions:/p"
   19  kubectl apply -f hello-vpa.yaml
   20  kubectl describe vpa hello-server-vpa
   21  kubectl apply -f hello-vpa.yaml
   22  kubectl scale deployment hello-server --replicas=2
   23  kubectl get pods -w
   24  kubectl get vpa
   25  kubectl describe pod hello-server | sed -n "/Containers:$/,/Conditions:/p"
   26  gcloud beta container clusters update scaling-demo --enable-autoscaling --min-nodes 1 --max-nodes 5
   27  kubectl get deployment -n kube-system
   28  gcloud beta container clusters update scaling-demo --autoscaling-profile optimize-utilization
   29  kubectl get vpa
   30  kubectl create poddisruptionbudget kube-dns-pdb --namespace=kube-system --selector k8s-app=kube-dns --max-unavailable 1
   31  kubectl create poddisruptionbudget prometheus-pdb --namespace=kube-system --selector k8s-app=prometheus-to-sd --max-unavailable 1
   32  kubectl create poddisruptionbudget kube-proxy-pdb --namespace=kube-system --selector component=kube-proxy --max-unavailable 1
   33  kubectl create poddisruptionbudget metrics-agent-pdb --namespace=kube-system --selector k8s-app=gke-metrics-agent --max-unavailable 1
   34  kubectl create poddisruptionbudget metrics-server-pdb --namespace=kube-system --selector k8s-app=metrics-server --max-unavailable 1
   35  kubectl create poddisruptionbudget fluentd-pdb --namespace=kube-system --selector k8s-app=fluentd-gke --max-unavailable 1
   36  kubectl create poddisruptionbudget backend-pdb --namespace=kube-system --selector k8s-app=glbc --max-unavailable 1
   37  kubectl create poddisruptionbudget kube-dns-autoscaler-pdb --namespace=kube-system --selector k8s-app=kube-dns-autoscaler --max-unavailable 1
   38  kubectl create poddisruptionbudget stackdriver-pdb --namespace=kube-system --selector app=stackdriver-metadata-agent --max-unavailable 1
   39  kubectl create poddisruptionbudget event-pdb --namespace=kube-system --selector k8s-app=event-exporter --max-unavailable 1
   40  kubectl get nodes
   41  gcloud container clusters update scaling-demo     --enable-autoprovisioning     --min-cpu 1     --min-memory 2     --max-cpu 45     --max-memory 160
   42  kubectl run -i --tty load-generator --rm --image=busybox --restart=Never -- /bin/sh -c "while sleep 0.01; do wget -q -O- http://php-apache; done"
   43  kubectl get pods
   44  kubectl run -i --tty load-generator --rm --image=busybox --restart=Never -- /bin/sh -c "while sleep 0.01; do wget -q -O- http://php-apache; done"
   45  history