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Building Repeatable Infrastructure using Terraform

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Building Repeatable Infrastructure using Terraform

  1. 1. Build Repeatable Infrastructure usingTerraform Jeeva S. Chelladhurai Founder, Comorin Consulting Services https://www.linkedin.com/in/jeevachelladhurai/
  2. 2. IT.then ■ Manual ■ Downtime ■ People Dependent ■ Misconfiguration ■ Not Repeatable
  3. 3. IT.now ■ Automated ■ Version Controlled ■ CI/CD ■ Infrastructure as Code ■ Repeatable
  4. 4. ■ Why – Declarative – Provider-agnostic – Codify the Infrastructure (IaC) – Plan before execute – Resource Graph – Change Automation ■ What – Open Source – Started in 2014 – Written in Go – Pluggable
  5. 5. ARCHITECTURE
  6. 6. ARCHITECTURE • Read configuration • Build dependency graph • https://github.com/hashicorp/terraform
  7. 7. ARCHITECTURE • External Static binaries • RPC -> Between Core and Plugin • Provider comes as plugins • Implements Provider’s CRUD
  8. 8. Install ■ Download appropriate zip from https://www.terraform.io/downloads.html ■ Unzip the downloaded file, move the file terraform to any path of your choice ■ Verify installation by launching terraform from a terminal
  9. 9. TerraformConfiguration ■ Terraform Format or JSON – HCL – Hashicorp Configuration Language (recommended) – Extension .tf – .tf.json for JSON (only if produced by machines) ■ Text file, can be version controlled ■ Human readable format ■ Describes the Infrastructure ■ Declarative
  10. 10. Resource Configuration
  11. 11. Provider Configuration ■ Manage the life-cycle of resources (CRUD) ■ Provider configuration – Keys / Password – Endpoint address ■ Resources are prefixed with providers – aws_instance, vsphere_virtual_machine ■ Initialize to download provider plugging provider "aws" { access_key = “xxxx" secret_key = “zzzzz" region = "us-east-1" }
  12. 12. Output Configuration ■ Response values to be highlighted to the user
  13. 13. Configuration resource
  14. 14. HANDS-ON
  15. 15. Thanks Jeeva S. Chelladhurai jeeva@comorin.co Comorin Consulting Service BlockChain, MicroService Architecture, Machine Learning, DevOps, Automation https://www.linkedin.com/in/jeevachelladhurai/

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