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Creating Production Vpc Multi Az by mouadja02

Name: Creating Production Vpc Multi Az
Author: mouadja02

Creating Production Vpc Multi Az

Creates a production-ready VPC with public and private subnets across multiple Availability Zones, including internet gateway, NAT gateways, route tables, and security groups following AWS Well-Architected principles. Use when deploying multi-AZ VPC infrastructure with automatic CIDR planning and DNS resolution.

mouadja02 Updated Sep 17, 2026

File contents

Creating a Production-Ready VPC Across Multiple Availability Zones

Overview

Domain expertise for creating production-ready VPC infrastructure distributed across multiple Availability Zones. Covers VPC creation with DNS support, public and private subnet layout with automatic CIDR calculation, internet gateway, NAT gateways for high-availability outbound access, route table configuration, and tiered security groups following AWS Well-Architected principles.

Create a production VPC

To create a fully configured multi-AZ VPC with public/private subnets, NAT gateways, route tables, and security groups, follow the procedure exactly. See Production VPC creation procedure.

Key parameters:

vpc_name (required): Name prefix for all resources
region (required): Target AWS region
allowed_web_cidrs (required): CIDR blocks allowed for web access — allow 0.0.0.0/0 only if explicitly requested
vpc_cidr (optional, default 10.0.0.0/16): VPC CIDR block
availability_zones (optional, default 3): Number of AZs (2–6)
environment (required): Environment tag
enable_ssh_access (optional, default false): Whether to create SSH security group

Troubleshooting

Insufficient Availability Zones

The target region must have at least 2 available AZs. Use aws ec2 describe-availability-zones to verify.

NAT Gateway creation delays

NAT Gateways can take several minutes to become available. The procedure waits for availability before configuring route tables.

Security group CIDR warnings

The procedure warns about 0.0.0.0/0 for web access CIDRs and recommends specific IP ranges for production workloads, but allows it if explicitly requested.

---name: creating-production-vpc-multi-azdescription: Creates a production-ready VPC with public and private subnets across multiple Availability Zones, including internet gateway, NAT gateways, route tables, and security groups following AWS Well-Architected principles. Use when deploying multi-AZ VPC infrastructure with automatic CIDR planning and DNS resolution.license: Apache-2.0---# Creating a Production-Ready VPC Across Multiple Availability Zones## OverviewDomain expertise for creating production-ready VPC infrastructure distributed acrossmultiple Availability Zones. Covers VPC creation with DNS support, public and privatesubnet layout with automatic CIDR calculation, internet gateway, NAT gateways forhigh-availability outbound access, route table configuration, and tiered securitygroups following AWS Well-Architected principles.## Create a production VPCTo create a fully configured multi-AZ VPC with public/private subnets, NAT gateways,route tables, and security groups, follow the procedure exactly.See [Production VPC creation procedure](references/create-production-vpc-multi-az.md).Key parameters:- `vpc_name` (required): Name prefix for all resources- `region` (required): Target AWS region- `allowed_web_cidrs` (required): CIDR blocks allowed for web access — allow 0.0.0.0/0 only if explicitly requested- `vpc_cidr` (optional, default `10.0.0.0/16`): VPC CIDR block- `availability_zones` (optional, default 3): Number of AZs (2–6)- `environment` (required): Environment tag- `enable_ssh_access` (optional, default false): Whether to create SSH security group## Troubleshooting### Insufficient Availability ZonesThe target region must have at least 2 available AZs. Use `aws ec2 describe-availability-zones` to verify.### NAT Gateway creation delaysNAT Gateways can take several minutes to become available. The procedure waits for availability before configuring route tables.### Security group CIDR warningsThe procedure warns about `0.0.0.0/0` for web access CIDRs and recommends specific IP ranges for production workloads, but allows it if explicitly requested.

Frequently asked questions