Quick Summary
DevOps bridges development and operations teams, emphasizing automation, collaboration, and continuous improvement.
DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the systems development life cycle while delivering features, fixes, and updates frequently in close alignment with business objectives.
Core DevOps Principles
- Collaboration: Breaking silos between dev and ops
- Automation: Automate repetitive tasks
- Continuous Integration: Merge code frequently
- Continuous Delivery: Release at any time
- Monitoring: Observe systems continuously
- Feedback: Rapid feedback loops
DevOps Lifecycle
- Plan - Define requirements and roadmap
- Code - Development and version control
- Build - Compile and package
- Test - Automated testing
- Release - Deployment preparation
- Deploy - Release to production
- Operate - Monitor and manage
- Monitor - Collect metrics and feedback
DevOps Tools
| Category | Tools |
|---|---|
| Version Control | Git, GitHub, GitLab |
| CI/CD | Jenkins, GitHub Actions, CircleCI |
| Containerization | Docker, Kubernetes |
| IaC | Terraform, Ansible, CloudFormation |
| Monitoring | Prometheus, Grafana, Datadog |
Benefits of DevOps
- Faster time to market
- Improved deployment frequency
- Lower failure rate of releases
- Faster recovery from failures
- Better collaboration and communication
- Increased efficiency
DevOps vs Traditional IT
| Traditional | DevOps |
|---|---|
| Siloed teams | Collaborative culture |
| Manual processes | Automated pipelines |
| Infrequent releases | Continuous delivery |
| Reactive monitoring | Proactive observability |
Key Points
- Combines dev and operations
- Emphasizes automation
- CI/CD core practices
- Docker and Kubernetes popular
- Faster, reliable releases
- Culture shift, not just tools