DevOps Full Course Lecture Notes

Introduction to DevOps

• Definition: DevOps is an approach that integrates developers and IT teams to efficiently build, test, and deliver software.
• Relevance: By 2025, DevOps skills will be in high demand due to a shift towards automation, cloud computing, and agile methodologies.
• Career Potential: Salaries for DevOps professionals can reach $150,000 in the US and about 30 lakhs per annum in India.
• Course Aim: To provide a comprehensive understanding of DevOps essentials including automation, CI/CD pipelines, and cloud tools.

The Evolution of DevOps

• Netflix Case Study: Transition from monolithic to microservices architecture, combined with DevOps practices like CI/CD, improved Netflix's infrastructure scalability and reliability.

Agenda for the Session

1. Introduction to DevOps
2. Why DevOps?
3. Principles and Phases of DevOps
4. Deep Dive into DevOps Tools
5. Hands-On Session

Software Development Models

• Waterfall Model:
  • Traditional, linear-sequential approach.
  • Challenges: Lack of flexibility, difficult to integrate new requirements.
• Agile Model:
  • Iterative approach with rapid feedback cycles (sprints).
  • Benefits: Faster delivery, continuous feedback, and adjustments.
  • Challenges: Difficulties in testing and operations integration.

DevOps Model

• Integration of Development and Operations:
  • Emphasizes collaboration between development and operations teams.
  • Continuous integration and delivery in a production-like environment.
• Phases of DevOps:
  • Planning: Goal setting with business teams.
  • Coding: Using tools like Git for version control.
  • Building: Using Maven, Gradle.
  • Testing: Automated testing with tools like Selenium.
  • Integration: Tools such as Jenkins.
  • Deployment: Managing code deployment.
  • Operation: Tools like Ansible, Chef.
  • Monitoring: Performance tracking.

DevOps Tools

• Open-source Tools: Jenkins, Git, Maven, Docker, Kubernetes, etc.
• Tool Categories:
  • CI/CD Tools: Jenkins, GitLab CI.
  • Cloud Architecture: AWS, Azure.
  • Containerization: Docker, Kubernetes.
  • Infrastructure as Code: Terraform.
  • Security Automation: DevSecOps practices.

DevOps Skills for 2024

1. CI/CD
2. Cloud Architecture & Kubernetes
3. Infrastructure as Code (IaC)
4. Security Automation
5. Data Ops & AI/ML Integration
6. Monitoring & Observability
7. Microservices Architecture
8. Containerization
9. Serverless Computing
10. Collaboration & Soft Skills

Real-World Applications

• Google: Processes 50-100 new releases daily.
• Netflix: Manages entire digital operations with a small DevOps team.

Career Opportunities in DevOps

• AWS DevOps Engineers: Roles include infrastructure management, CI/CD pipeline establishment.
• Salaries: Vary by experience level and location; competitive salaries in both India and the US.

Useful Resources

• Simply Learn’s Professional Certificate Program: In-depth courses offering a comprehensive understanding of DevOps and cloud computing principles.

Conclusion

• DevOps integrates development and operations to facilitate continuous delivery and integration.
• The demand for DevOps skills continues to grow with the increasing focus on automation and cloud technologies.

Further Learning

• Simply Learn’s Courses: AWS DevOps, Kubernetes, Docker, and more advanced DevOps tools and practices.