devops

DevOps Skills

Overview

DevOps practices for continuous integration, delivery, and operations to enable fast, reliable software delivery.

DevOps Lifecycle

┌─────────────────────────────────────────────────────────────────┐
│                       CONTINUOUS                                 │
│  ┌──────┐  ┌──────┐  ┌──────┐  ┌──────┐  ┌───────┐             │
│  │ Plan │→ │ Code │→ │Build │→ │ Test │→ │Release│             │
│  └──────┘  └──────┘  └──────┘  └──────┘  └───────┘             │
│      ↑                                        │                  │
│      │       INTEGRATION / DELIVERY           ↓                  │
│  ┌──────┐  ┌───────┐  ┌──────┐                                  │
│  │Learn │← │Monitor│← │Deploy│                                   │
│  └──────┘  └───────┘  └──────┘                                  │
│                     OPERATIONS                                   │
└─────────────────────────────────────────────────────────────────┘

Categories

CI/CD

• Pipeline fundamentals
• GitHub Actions / GitLab CI
• Pipeline patterns
• Deployment strategies (Blue-Green, Canary)

Containerization

• Docker fundamentals
• Docker Compose
• Container best practices
• Multi-stage builds

Orchestration

• Kubernetes basics
• Helm charts
• Service mesh
• GitOps (ArgoCD, Flux)

Monitoring

• Metrics and SLIs/SLOs
• Prometheus & Grafana
• Alerting strategies
• Dashboard design

Logging

• Structured logging
• Log aggregation
• ELK/EFK stack
• Distributed tracing

Infrastructure

• Infrastructure as Code
• Terraform
• Cloud patterns
• Cost optimization

Reliability

• SRE fundamentals
• Incident management
• Chaos engineering
• Disaster recovery

DORA Metrics

Metric	Elite	High	Medium	Low
Deployment Frequency	On-demand	Weekly	Monthly	Yearly
Lead Time	< 1 day	1 week	1 month	> 6 months
Change Failure Rate	< 15%	16-30%	31-45%	> 45%
MTTR	< 1 hour	< 1 day	< 1 week	> 1 week

Skills Index

CI/CD

• CI/CD Fundamentals
• GitHub Actions
• GitLab CI
• Pipeline Patterns
• Deployment Strategies

Containerization

• Docker Basics
• Docker Compose
• Container Best Practices
• Multi-Stage Builds

Orchestration

• Kubernetes Basics
• Helm Charts
• Service Mesh
• GitOps

Monitoring

• Metrics Fundamentals
• Prometheus & Grafana
• Alerting
• Dashboards

Logging

• Logging Best Practices
• Structured Logging
• ELK Stack
• Log Aggregation

Infrastructure

• IaC Fundamentals
• Terraform Basics
• Cloud Patterns
• Cost Optimization

Reliability

• SRE Fundamentals
• Incident Management
• Chaos Engineering
• Disaster Recovery

DevOps Maturity Model

┌─────────────────────────────────────────────────────────────────┐
│                    DevOps Maturity Levels                        │
├─────────────────────────────────────────────────────────────────┤
│                                                                  │
│  Level 5: Optimizing                                            │
│  ├── Continuous improvement culture                              │
│  ├── Predictive analytics                                        │
│  └── Self-healing systems                                        │
│                                                                  │
│  Level 4: Measured                                               │
│  ├── Comprehensive metrics                                       │
│  ├── Data-driven decisions                                       │
│  └── Automated compliance                                        │
│                                                                  │
│  Level 3: Defined                                                │
│  ├── Standardized pipelines                                      │
│  ├── Infrastructure as Code                                      │
│  └── Centralized logging/monitoring                              │
│                                                                  │
│  Level 2: Managed                                                │
│  ├── Basic CI/CD                                                 │
│  ├── Some automation                                             │
│  └── Manual deployments                                          │
│                                                                  │
│  Level 1: Initial                                                │
│  ├── Ad-hoc processes                                            │
│  ├── Manual everything                                           │
│  └── Siloed teams                                                │
│                                                                  │
└─────────────────────────────────────────────────────────────────┘

Best Practices

1. Automate Everything - Reduce manual toil
2. Version Control All - Code, configs, infrastructure
3. Shift Left - Test and secure early
4. Measure What Matters - Focus on DORA metrics
5. Embrace Failure - Learn from incidents
6. Continuous Improvement - Iterate and optimize
7. Collaboration - Break down silos
8. Documentation - Runbooks and playbooks