Part-70: Implement a Global External Network Load balancer with TCP Proxy in GCP Cloud

#googlecloud #devops #cloud #learning

Cloud Load Balancing - Network Load Balancer (TCP/TLS)

Step-01: Introduction

Pre-requisite-1: Create Instance Templates, Create Managed Instance Groups as part of below demo

https://dev.to/latchudevops/part-67-mastering-google-cloud-global-load-balancers-regional-mig-global-http-demo-n98

Create Global External Load NetworkBalancer - TCP Proxy

Step-02: Create Health check - TCP

# Create a health check -  TCP
gcloud compute health-checks create tcp global-tcp-health-check --port 80

Step-03: Create Global External Network Load Balancer

Go to Network Services -> Load Balancing -> CREATE LOAD BALANCER
Network Load Balancer (TCP/SSL): START CONFIGURATION
Internet facing or internal only: From Internet to my VMs
Multiple regions or single region: Multiple regions (or not sure yet)
Classic or advanced traffic management: Advanced traffic management
Load Balancer name: global-lb-external-tcp

Backend Configuration

CLick on CREATE A BACKEND SERVICE
Name: global-lb-external-tcp
Description: global-lb-external-tcp
Backend type: Instance Group
Protocol: TCP
Named Port: webserver80 (AUTO-POPULATED WHEN BACKEND IS SELECTED AS mig1-lbdemo)
Timeout: 30
IP address selection policy: Only IPv4
BACKENDS

IP stack type: IPv4 (single stack)
Instance Group: mig1-us-central1
Port Numbers: 80
REST ALL LEAVE TO DEFAULTS
Click on DONE
Instance Group: mig1-us-east1
Port Numbers: 80
REST ALL LEAVE TO DEFAULTS
Click on DONE

Health Check: global-tcp-health-check

Frontend Configuration

Click on ADD FRONTEND IP AND PORT
Name: frontend-tcp
Description: frontend-tcp
Protocol: TCP
Network Service Tier: Premium (Current project-level tier, change)
IP Version: IPv4
IP Address: global-lb-ip5 CREATE NEW EXTERNAL STATCI IP
Port: 80
Proxy protocol: OFF

Review and Finalize

Review all settings
Click on CREATE

Step-03: Verify Load Balancer

Go to Network Services -> Load Balancing -> global-lb-external-tcp
Review the Tabs

LOAD BALANCERS
BACKENDS
FRONTENDS

Step-04: Access Application using LB IP on browser

Important Note: WAIT FOR 3 to 5 Minutes before Load Balancer is fully operational

Step-05: Test multi-region functionality (Send traffic to region closest to client)

To simulate a user in a different geography, you can connect to one of your virtual machine instances in a different region, and then run a curl command from that instance to see the request go to an instance in the region closest to it.

# Set Project
gcloud config set project PROJECT_ID
gcloud config set project gcpdemos

# Region: us-central1
gcloud compute ssh --zone "us-central1-c" "mig1-us-central1-xq12" 
curl http://LB-IP
curl http://34.36.49.82/

# Region: us-east1
gcloud compute ssh --zone "us-east1-d" "mig2-us-east1-693l" 
curl http://LB-IP
curl http://34.36.49.82/

Step-06: Delete Load Balancer