tomevault-io 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
- Automate Everything - Reduce manual toil
- Version Control All - Code, configs, infrastructure
- Shift Left - Test and secure early
- Measure What Matters - Focus on DORA metrics
- Embrace Failure - Learn from incidents
- Continuous Improvement - Iterate and optimize
- Collaboration - Break down silos
- Documentation - Runbooks and playbooks
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