“Cara Set Up Network dan HTTP Load Balancers di GCP”
Daftar Isi
Pengantar
Load Balancing Jaringan TCP/UDP eksternal Google Cloud (setelah ini disebut sebagai Network Load Balancing) adalah penyeimbang beban pass-through regional. Penyeimbang beban jaringan mendistribusikan lalu lintas eksternal di antara instans mesin virtual (VM) di wilayah yang sama.
Aktifkan Cloud Shell
- Buka dashboaard GCP
- Pilih Cloud shell
Setting default region dan zone untuk semua resources
- Setting default zone
gcloud config set compute/zone us-central1-a
- setting default Region
gcloud config set compute/region us-central1
Membuat multiple web server instances
- Buat webserver 1
gcloud compute instances create www1 \ --image-family debian-9 \ --image-project debian-cloud \ --zone us-central1-a \ --tags network-lb-tag \ --metadata startup-script="#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo service apache2 restart echo '<!doctype html><html><body><h1>www1</h1></body></html>' | tee /var/www/html/index.html"
- Buat Webserver 2
gcloud compute instances create www2 \ --image-family debian-9 \ --image-project debian-cloud \ --zone us-central1-a \ --tags network-lb-tag \ --metadata startup-script="#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo service apache2 restart echo '<!doctype html><html><body><h1>www2</h1></body></html>' | tee /var/www/html/index.html"
- Buat Webserver 3
gcloud compute instances create www3 \ --image-family debian-9 \ --image-project debian-cloud \ --zone us-central1-a \ --tags network-lb-tag \ --metadata startup-script="#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo service apache2 restart echo '<!doctype html><html><body><h1>www3</h1></body></html>' | tee /var/www/html/index.html"
gcloud compute firewall-rules create www-firewall-network-lb \ --target-tags network-lb-tag --allow tcp:80
- Cek List Compute
gcloud compute instances list
- Test Curl
curl http://[IP_ADDRESS]
Konfigurasi load balancing service
- Buat static external IP untuk loadbalancer
gcloud compute addresses create network-lb-ip-1 \ --region us-central1
- Buat HTTP Health Check
gcloud compute http-health-checks create basic-check
- Buat Target pool untuk di hubungkan dengan health check
gcloud compute target-pools create www-pool \ --region us-central1 --http-health-check basic-check
- Tambahkan instance pada pool
gcloud compute target-pools add-instances www-pool \ --instances www1,www2,www3
- Buat forwading Rule
gcloud compute forwarding-rules create www-rule \ --region us-central1 \ --ports 80 \ --address network-lb-ip-1 \ --target-pool www-pool
Mengirim traffict pada Instance
- Cek list external IP dan forwading
gcloud compute forwarding-rules describe www-rule --region us-central1
- Ganti IP_ADDRESS dengan yang ada di list IP external
while true; do curl -m1 IP_ADDRESS; done
Membuat HTTP load balancer
- Buat Load Balancer Template
gcloud compute instance-templates create lb-backend-template \ --region=us-central1 \ --network=default \ --subnet=default \ --tags=allow-health-check \ --image-family=debian-9 \ --image-project=debian-cloud \ --metadata=startup-script='#! /bin/bash apt-get update apt-get install apache2 -y a2ensite default-ssl a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://169.254.169.254/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html systemctl restart apache2'
- Buat Instance Group
gcloud compute instance-groups managed create lb-backend-group \ --template=lb-backend-template --size=2 --zone=us-central1-a
- Buat
fw-allow-health-check
firewall rule
gcloud compute firewall-rules create fw-allow-health-check \ --network=default \ --action=allow \ --direction=ingress \ --source-ranges=130.211.0.0/22,35.191.0.0/16 \ --target-tags=allow-health-check \ --rules=tcp:80
- Set Up Global static External IP
gcloud compute addresses create lb-ipv4-1 \ --ip-version=IPV4 \ --global
- Cek IP yang di dapatkan ( Noted )
gcloud compute addresses describe lb-ipv4-1 \ --format="get(address)" \ --global
- Buat health check untuk load balancer
gcloud compute health-checks create http http-basic-check \ --port 80
- Buat backend Service
gcloud compute backend-services create web-backend-service \ --protocol=HTTP \ --port-name=http \ --health-checks=http-basic-check \ --global
- Hubungkan instance group dengan backend service
gcloud compute backend-services add-backend web-backend-service \ --instance-group=lb-backend-group \ --instance-group-zone=us-central1-a \ --global
gcloud compute url-maps create web-map-http \ --default-service web-backend-service
- Buat target http proxy untuk menghubungkan requset ke url map
gcloud compute target-http-proxies create http-lb-proxy \ --url-map web-map-http
- Buat global forwading rule untuk menghubungkan incoming request ke proxy
gcloud compute forwarding-rules create http-content-rule \ --address=lb-ipv4-1\ --global \ --target-http-proxy=http-lb-proxy \ --ports=80
Testing traffic sent pada instances
- Masuk ke menu Navigation menu, go to Network services > Load balancing.
- Buka
web-map-http
yang sudah di buat - Pada Backend section , cek sampai semua Vm healthy
- Jika VM semua sudah Healty , test akses dari browser
http://IP_ADDRESS/
Penutup
Sahabat Blog Learning & Doing demikianlah penjelasan mengenai Cara Set Up Network dan HTTP Load Balancers di GCP. Semoga Bermanfaat . Sampai ketemu lagi di postingan berikut nya.
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