questions

Question 1

1. What is Infrastructure as Code?

Answer 1

Infrastructure as Code (IaC) is the managing and provisioning of infrastructure through code instead of through manual processes.

You write and execute the code to define, deploy, update, and destroy your infrastructure

Question 2

2. What are the benefits of IaC?

Answer 2

Faster speed and consistency with automation:
- We can bring up the servers with one script and scale up and down based on our load with the same script.
Code reusability and versioning
Efficient software development lifecycle
Reduced management overhead
Decreased risk
Stable & consistent environments for faster iterations
Makes changes idempotent, consistent, repeatable, and predictable.
Cost optimization
Self-documenting

Question 3

3. How does using IaC make it easy to provision infrastructure?

Answer 3

Automating infrastructure provisioning with IaC means that developers don’t need to manually provision and manage servers, operating systems, storage, and other infrastructure components each time they develop or deploy an application. Codifying your infrastructure gives you a template to follow for provisioning

It standardizes workflows across different infrastructure providers (e.g.VMware, AWS, Azure, GCP, etc.) by using a common syntax across all of them.

Question 4

4. What is Idempodent in terms of IaC?

Answer 4

The idempotent characteristic provided by IaC tools ensures that, even if the same
code is applied multiple times, the result remains the same.

Question 5

5. What are Day 0 and Day 1 activities?

Answer 5

IaC can be applied throughout the lifecycle, both on the initial build, as well as throughout the life of the infrastructure.
Commonly, these are referred to as Day
0 and Day 1 activities.

“Day 0” code provisions and configures your initial
infrastructure.

“Day 1” refers to OS and application configurations you apply after you’ve initially built your infrastructure.

Question 6

6. What are the use cases of Terraform?

Answer 6

Application Infrastructure Deployment: 
          - Scaling and Monitoring Tools
Multi-Cloud Deployment
Self-Service Clusters
Policy Compliance and Management
PaaS (Platform as a Service) Application Setup (ex. Heroku)
Software Defined Networking
Kubernetes Deployments
Parallel or Disposable Environments
Software Demos
Multi-Tier Applications
Resource Schedulers

Question 7

7. What are the advantages of Terraform?

Answer 7

Orchestration, not merely configuration
Immutable infrastructure
Declarative, not procedural code
Client-only architecture
Portability
Automation
Reliability
Clearly mapped resource dependencies 
Consistent workflow 
Elegant user experience
Strong Community
OpenSource