Optimize Costs for Google Kubernetes Engine: Challenge Lab

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1 year ago

“Optimize Costs for Google Kubernetes Engine: Challenge Lab”

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Di lab tantangan, Anda diberi skenario dan serangkaian tugas. Alih-alih mengikuti petunjuk langkah demi langkah, Anda akan menggunakan keterampilan yang dipelajari dari lab dalam misi untuk mengetahui cara menyelesaikan tugas sendiri! Sistem penilaian otomatis (ditampilkan di halaman ini) akan memberikan umpan balik apakah Anda telah menyelesaikan tugas dengan benar.

Praktikum

Task 1. Create our cluster and deploy our app

set timezone

ZONE=us-central1-a

Create cluster

gcloud container clusters create onlineboutique-cluster \
   --project=${DEVSHELL_PROJECT_ID} --zone=${ZONE} \
    --machine-type=n1-standard-2 --num-nodes=2

Setup namespace

kubectl create namespace dev
kubectl create namespace prod

switch ke dev

kubectl config set-context --current --namespace dev

copy dan deploy app

git clone https://github.com/GoogleCloudPlatform/microservices-demo.git &&
cd microservices-demo && kubectl apply -f ./release/kubernetes-manifests.yaml --namespace dev

tunggu sampai muncul frontend external IP

kubectl get svc -w --namespace dev

akses browser -> ttp://<EXTERNAL_IP>

Task 2: Migrate to an Optimized Nodepool

Create node pool

gcloud container node-pools create optimized-pool \
   --cluster=onlineboutique-cluster \
   --machine-type=custom-2-3584 \
   --num-nodes=2 \
   --zone=$ZONE

cordon dan drain default-pool

for node in $(kubectl get nodes -l cloud.google.com/gke-nodepool=default-pool -o=name); do
   kubectl cordon "$node";
done
   
for node in $(kubectl get nodes -l cloud.google.com/gke-nodepool=default-pool -o=name); do
   kubectl drain --force --ignore-daemonsets --delete-local-data --grace-period=10 "$node";
done

cek running pod

kubectl get pods -o=wide --namespace dev

delete default pool

gcloud container node-pools delete default-pool \
   --cluster onlineboutique-cluster --zone $ZONE

Task 3: Apply a Frontend Update

setting pod disruption budget

kubectl create poddisruptionbudget onlineboutique-frontend-pdb \
--selector app=frontend --min-available 1  --namespace dev

update resource

KUBE_EDITOR="nano" kubectl edit deployment/frontend --namespace dev

Ganti konfigurasi

image to gcr.io/qwiklabs-resources/onlineboutique-frontend:v2.1, and
imagePullPolicy to Always

masuk menu Kubernetes Engine > Workloads dan click frontend

Task 4: Autoscale from Estimated Traffic

buat horizontal pod autoscaling

kubectl autoscale deployment frontend --cpu-percent=50 \
   --min=1 --max=13 --namespace dev

cek status

kubectl get hpa --namespace dev

update cluster autoscaler

gcloud beta container clusters update onlineboutique-cluster \
   --enable-autoscaling --min-nodes 1 --max-nodes 6 --zone $ZONE

test autoscaler

kubectl exec $(kubectl get pod --namespace=dev | grep 'loadgenerator' | cut -f1 -d ' ') \
   -it --namespace=dev -- bash -c "export USERS=8000; sh ./loadgen.sh"

cek overview di frontend

scroll ke manage pods

Penutup

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