Setting up a Private Kubernetes Cluster

“Setting up a Private Kubernetes Cluster”

Pengantar

Di Kubernetes Engine, cluster pribadi adalah cluster yang membuat master Anda tidak dapat diakses dari internet publik. Dalam cluster pribadi, node tidak memiliki alamat IP publik, hanya alamat pribadi, sehingga beban kerja Anda berjalan di lingkungan yang terisolasi. Node dan master berkomunikasi satu sama lain menggunakan peering VPC.

Set a zone

gcloud config set compute/zone us-central1-a

Buat private cluster

gcloud beta container clusters create private-cluster \
    --enable-private-nodes \
    --master-ipv4-cidr 172.16.0.16/28 \
    --enable-ip-alias \
    --create-subnetwork ""

Viewing your subnet and secondary address ranges

• cek list subnet

gcloud compute networks subnets list --network default

• cek info subnet

gcloud compute networks subnets describe [SUBNET_NAME] --region us-central1

Enabling master authorized networks

• Buat Vm

gcloud compute instances create source-instance --zone us-central1-a --scopes 'https://www.googleapis.com/auth/cloud-platform'

• Cek external IP

gcloud compute instances describe source-instance --zone us-central1-a | grep natIP

• authorize external address

gcloud container clusters update private-cluster \
    --enable-master-authorized-networks \
    --master-authorized-networks [MY_EXTERNAL_RANGE]

• ssh ke instance

gcloud compute ssh source-instance --zone us-central1-a

• Install kubectl

gcloud components install kubectl

• Buat cluster

gcloud container clusters get-credentials private-cluster --zone us-central1-a

• cek node

kubectl get nodes --output yaml | grep -A4 addresses

Clean Up

gcloud container clusters delete private-cluster --zone us-central1-a

Penutup

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