Before building project set input variables!

• copy them to ~/.bashrc and reopen your terminal
• OR run them in CLI before run terraform command

They look like:

export TF_VAR_region=us-west-1
export PKR_VAR_region=$TF_VAR_region
export TF_VAR_domain_name=domain.com
export TF_VAR_db_name=wordpress
export TF_VAR_db_username=admin
export TF_VAR_db_password=Passw0RDforDataBase

Run command

bash build.sh

Run command:

bash destroy.sh

Module is published at Terraform Registry (https://registry.terraform.io/modules/rus777777/vpc-t1/aws/latest) :

module "vpc-t1" {
  source  = "rus777777/vpc-t1/aws"
  ...
}

Source code is in the

git@github.com:rus777777/terraform-aws-vpc-t1.git

Project description

• Project tasks:

  • create infrustructure architecture
  • the size of the resources (could be parameterized)
  • determine dependencies between groups
  • flexibility of the code
  • make regionless dependency
    • deploy into another region with a few clicks
    • resources should not depend on specific region

• Team communication:

  • How to negotatate with groups inside team
    • chat channel (telegram)
    • zoom
    • etc
  • which backends we use

• Team leader
• VPC group
• RDS group
• ASG group

• Current infrastructure of our Project - Anelia will share later

• create primitive model (prototype) of our project to negotiate beetwen groups

• make base for other groups - RDS, ASG should not wait
• VPC organise as a Terraform mudule
• module published in Terraform Registry for public use

VPC

• 3 public subnets
• 3 private subnets
• 1 GW
• (depend on parameter) NAT GW

• RDS instanse - was created as simple model for testing connection
• Linked with our VPC
• DB/Login/Password is stored in env (also worked with Parameter Store - commented in code).
• RDS resides in private subnets, not accessible from Internet.
• Security Group is allow to access to port 3306
• using resources Aurora cluster
• publish in Route53:
  • writer.yourdomain.com
  • reader1.yourdomain.com
  • reader2.yourdomain.com
  • reader3.yourdomain.com

• Launchned in our VPC

• Packer - for making golden image for ASG

  • code not depend on region - automative use our region
  • use Amazon Linux 2

• ASG template - automaticale choose latest golden image

  • use templatefile() for dynamic create file with needed parameters

• userdata

  • automative script to startup Wordpress and connect to DB

• ELB in public sunbets

• ASG in private subnets

• Security groups:

  • ELB accessable from Internet
  • ASG accessable from ALB

• wordpress is accessable through ALB by address wordpress.yourdomain.com

• we successfully made this project

  • flexibility of the code
  • deploy into another region with a few clicks
  • expirience 3-tire architecture
  • undestood every stage of the project, correlation between groups

• what we learn from this project

• how many time (hours) team members contribute to project

Markdown Cheatsheet

https://github.com/tchapi/markdown-cheatsheet/blob/master/README.md

Reference architecture

https://docs.aws.amazon.com/whitepapers/latest/best-practices-wordpress/reference-architecture.html