Author: Eliab Lemus
Location: Living in Guatemala 🇬🇹
GitHub: github.com/EliabLemus
This repository documents my proposed SRE implementation plan tailored for a fast-growing startup. It is a hands-on blueprint based on modern, cost-effective, open-source tools and designed to deliver monitoring, alerting, SLOs, and reliability foundations in the first month.
| File | Description |
|---|---|
README.md |
Overview, tools, goals and value proposition |
execution-plan.csv |
Weekly breakdown of implementation tasks and hours |
tools-summary.md |
📘 Tools Summary – Costs, requirements, and technical documentation |
diagrams/ |
Architecture and monitoring workflows |
assets/ |
Branding assets (banner, favicon, etc.) |
- Monitoring: Prometheus + Grafana
- Alerting: Alertmanager
- Logging: Loki
- Incident Response: Cabin (open source) or OpsGenie (free tier)
- SLIs/SLOs: Nobl9 free tier or Prometheus DIY
- IaC & Automation: Terraform + GitHub Actions
- Kubernetes-ready: Supports k3s / microk8s deployments
All tools selected based on cost-efficiency, low infra requirements, and alignment with lean startup operations.
The following diagram illustrates the proposed SRE architecture, including Prometheus, Grafana, Loki, Alertmanager, and Terraform in a Kubernetes-friendly layout.
Startups often need fast, scalable observability without big vendor lock-ins or expensive licenses. This plan brings:
- A complete SRE foundation in 4 weeks
- Open-source tooling with production-grade features
- Focus on fast feedback, incident readiness, and low MTTR
- A clear roadmap that can be adapted and versioned by the team
Want a preview of the dashboards and diagrams? Coming soon in /diagrams and /demos folders.
A measurable metric that reflects a system’s behavior.
Example: request latency, error rate, availability.
“How do we know this is working well?”
The target or goal set for an SLI. What we aim to achieve internally.
Example: 99.9% of requests should be faster than 300ms over the last 30 days.
“How good should the service be?”
A formal contract (external) built on top of SLOs. Violations may imply penalties or reimbursements.
“What did we officially promise our users or clients?”
| Term | What It Is | Example |
|---|---|---|
| SLI | A measurable indicator | Avg latency = 280ms |
| SLO | The internal objective | 99.9% of requests < 300ms |
| SLA | The formal agreement | Refund if availability < 99.5% |
I'm happy to adapt this plan further based on your current stack (GCP, AWS, containers, etc.). Feel free to connect via:
📧 eliab.lemus.barrios@gmail.com
💼 linkedin.com/in/eliablemus
Let's make reliability a strength, not an afterthought. 🚀