Effective DevOps with AWS

Creating a VPC with public and private subnets

We will create a new script in our EffectiveDevOpsTemplates repository and call it vpc-cf-template.py.

We will start with our usual boilerplates:

"""Generating CloudFormation template.""" 
 
from troposphere import ( 
    GetAZs, 
    Output, 
    Parameter, 
    Ref, 
    Select, 
    Sub, 
    Tags, 
    Template, 
    GetAtt 
) 
 
from troposphere.ec2 import ( 
    VPC, 
    InternetGateway, 
    NetworkAcl, 
    NetworkAclEntry, 
    Route, 
    RouteTable, 
    Subnet, 
    SubnetNetworkAclAssociation, 
    SubnetRouteTableAssociation, 
    VPCGatewayAttachment, 
    EIP, 
    NatGateway, 
) 
 
t = Template() 
 
t.add_description("Effective DevOps in AWS: VPC, public and private subnets") 

This template will require providing a parameter for the CIDR. We will create our subnets on the private (non-publicly ...