Google Cloud VPC Network Peering
Google Cloud VPC network peering allows internal IP address connectivity between two VPC networks. Those VPC networks could be from the same project or organization or different projects or organizations.
In this blog post, we will demonstrate a step-by-step guide to the process of setting up VPC peering between two VPCs located in different geographical regions within the Google Cloud Platform (GCP). By following these steps, We will deploy an Nginx web server on one VM and connect to it from another VM using private IP addresses.
VPC Network Peerings gives you several advantages over using external IP addresses or VPNs to connect networks, including:
Network Latency: Connectivity that uses only internal addresses provides lower latency than connectivity that uses external addresses.
Network Security: Service owners do not need to have their services exposed to the public Internet and deal with its associated risks.
Network Cost: Google Cloud charges egress bandwidth pricing for networks using external IPs to communicate even if the traffic is within the same zone. If however, the networks are peered they can use internal IPs to communicate and save on those egress costs. Regular network pricing still applies to all traffic.
How to create a VPC Peering between two VPCs
Step 1:Create a Google Cloud Project
Open the Google Cloud Console (console.cloud.google.com).
Click on the project dropdown at the top and select "New Project."
Follow the prompts to create a new project and remember its project ID.
Step 2:Create a Custom vpc-a with vpc-a-subnet & Firewall Rules
In the left navigation pane, click "VPC Network" and then "VPC networks."
Click "Create VPC network."
Enter a name for your first VPC, choose the desired region, and click "Create."
Step 3:Create a Custom vpc-b with vpc-b-subnet & Firewall Rules
Step 4:Create vm-a with proper networks tags
- after ssh login into vm-a install telnet
sudo apt update
sudo apt install telnet
Step 5:Create vm-b with proper network tags
after ssh into the vm-b install nginx
sudo apt update sudo apt install nginx
Step 6:Create VPC Network Peering connections (peering-ab and peering-ba)
Step 7:Test the Peering Connections(peering-ab and peering-ba)
Finally, we have created two separate VPCs in different geographical regions, set up a VM with Nginx in one VPC, and established VPC peering to enable private IP communication between VMs across VPCs.