Orchestrating the Cloud with Kubernetes

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2 years ago

“Orchestrating the Cloud with Kubernetes”

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Pengantar

Kubernetes adalah proyek sumber terbuka (tersedia di kubernetes.io) yang dapat berjalan di berbagai lingkungan, mulai dari laptop hingga kluster multi-node dengan ketersediaan tinggi, dari cloud publik hingga penerapan di lokasi, dari mesin virtual hingga bare metal.

Praktikum

Google Kubernetes Engine

gcloud config set compute/zone us-central1-b
gcloud container clusters create io

Task 1. Get the sample code

Buka cloud shell

gsutil cp -r gs://spls/gsp021/* .

cd orchestrate-with-kubernetes/kubernetes

Task 2. Quick Kubernetes Demo

Buat container nginx

kubectl create deployment nginx --image=nginx:1.10.0

Cek pod

kubectl get pods

expose keluar

kubectl expose deployment nginx --port 80 --type LoadBalancer

cek list service

kubectl get services
curl http://<External IP>:80

Task 3. Pods

Task 4. Creating pods

Masuk ke folder

cd ~/orchestrate-with-kubernetes/kubernetes
cat pods/monolith.yaml

Create monolith pod

kubectl create -f pods/monolith.yaml
kubectl get pods
kubectl describe pods monolith

Task 5. Interacting with pods

setting forwading

kubectl port-forward monolith 10080:80

Test dari terminal 2

curl http://127.0.0.1:10080
curl http://127.0.0.1:10080/secure
curl -u user http://127.0.0.1:10080/login
TOKEN=$(curl http://127.0.0.1:10080/login -u user|jq -r '.token')
curl -H "Authorization: Bearer $TOKEN" http://127.0.0.1:10080/secure

Cek log dari terminal 3

kubectl logs monolith
kubectl logs -f monolith

masuk ke pod

kubectl exec monolith --stdin --tty -c monolith -- /bin/sh
ping -c 3 google.com
exit

Task 6. Services

Task 7. Creating a service

Masuk ke folder

cd ~/orchestrate-with-kubernetes/kubernetes
cat pods/secure-monolith.yaml


kubectl create secret generic tls-certs --from-file tls/
kubectl create configmap nginx-proxy-conf --from-file nginx/proxy.conf
kubectl create -f pods/secure-monolith.yaml

cat services/monolith.yaml

kubectl create -f services/monolith.yaml

Task 8. Adding labels to pods

kubectl get pods -l "app=monolith"
kubectl get pods -l "app=monolith,secure=enabled"
kubectl label pods secure-monolith 'secure=enabled'
kubectl get pods secure-monolith --show-labels
kubectl describe services monolith | grep Endpoints
gcloud compute instances list
curl -k https://<EXTERNAL_IP>:31000

Task 9. Deploying applications with Kubernetes

Task 10. Creating deployments

kubectl create -f deployments/auth.yaml
kubectl create -f services/auth.yaml

kubectl create -f deployments/hello.yaml
kubectl create -f services/hello.yaml

kubectl create configmap nginx-frontend-conf --from-file=nginx/frontend.conf
kubectl create -f deployments/frontend.yaml
kubectl create -f services/frontend.yaml

kubectl get services frontend

curl -k https://<EXTERNAL-IP>

Penutup

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