DevOps In AWS

Question 1

Break down the difference between
Continuous Integration
Continuous Delivery
Continuous Deployment

Answer 1

CI is about integrating code changes frequently and checking for conflicts and issues.

CDelivery - automates the process of packaging and deploying software to different environments like testing

CDeployment - automatically deploys code changes to production after passing tests and checks.

Question 2

What are the tools within AWS that make up the CI/CD pipeline?

Answer 2

Code Pipeline - CI/CD Orchestration
Code Commit
Code Build
Code Deploy

Question 3

Benefits of Iac 5

Answer 3

Automation
Replicability
Scalability
Testing and Validation
Versioning

Question 4

What are the IaC tools in AWS

Answer 4

AWS CloudFormation
AWS CDK (Cloud Development Kit)
AWS SAM (Serverless Application Model)

Question 5

Deployment Approach: Canary

Answer 5

Gradually rolling out new features or updates to a subset of users or traffic.

It allows for testing and gathering feedback before deploying to the entire user base.

Question 6

Deployment Approach: Rolling vs Canary Risks

Answer 6

Rolling deployments help manage risks, but to a lesser extent compared to canary deployments. As the new version is rolled out across more servers, any issues may affect a larger number of users, requiring appropriate monitoring and rollback mechanisms.

Question 7

Deployment Approach: Blue Green

Answer 7

Two identical environments, “blue” and “green,” are set up.

The new version of the application is deployed to the “green” environment, which is then tested and validated.

Once validated, traffic is switched from the “blue” environment to the “green” environment, effectively deploying the new version.

Question 8

Q: What is DevOps?

Answer 8

DevOps is a software development approach that combines development (Dev) and operations (Ops) teams to improve collaboration, automate processes, and deliver software more rapidly and reliably.

Question 9

Q: What are the key principles of DevOps? 5

Answer 9

The key principles of DevOps include:
Continuous integration
Continuous delivery
Infrastructure as code
Automation & Collaboration, and
Monitoring

Question 10

What is the role of configuration management in DevOps?

Answer 10

Managing and maintaining consistent configurations of systems and infrastructure across your architecture.

Question 11

What does configuration management help you achieve? 3

Answer 11

Ensures reproducibility, scalability, and reducing manual errors.

Question 12

What are the benefits of using containers in DevOps? 3

Answer 12

Containers provide
Portability
Scalability
Isolation for applications

Question 13

How does monitoring contribute to DevOps practices? 3

Answer 13

Real-time visibility into application and infrastructure performance

Early Identification of issues to make data-driven decisions

Ensures system reliability

Question 14

Explain the approval process in relation to continuous delivery?

Answer 14

The initiation of continuous delivery process is automated but requires a manual approval step before the application is deployed to production.

Question 15

What is the function of the manual approval step in continuous delivery model?

Answer 15

The approval step allows stakeholders to review and validate the changes before they are released to prod.

Question 16

Explain the approval process in relation to continuous deployment?

Answer 16

Continuous deployment automatically deploys the application to production without a manual approval process.

This makes the release process more streamlined and immediate.

Question 17

How will you approach a project that needs to implement DevOps?

Answer 17

DevOps Implementation Stages:
Stage 1: Assess existing process, identify improvement areas, and create a roadmap.
Stage 2: Create a proof of concept (PoC) and gain approval for implementation.
Stage 3: Implement DevOps with version control, integration, testing, delivery, deployment and monitoring in a step-by-step approach.