SLT-MOBITEL Digital Labs - DevOps & Observability

DevOps & Observability Intern · 2025 · 6 months · 5 people · 2 min read

Provided sub-second visibility into system health, reducing MTTR (Mean Time to Recovery)

Overview

Modernized internal infrastructure monitoring at SLT-MOBITEL Digital Labs

Problem

The engineering team lacked real-time visibility into system health, making it difficult to detect and resolve issues before they impacted users. Outages often went unnoticed for extended periods.

Constraints

  • Integration with existing infrastructure
  • Minimal performance overhead
  • 24/7 monitoring requirements
  • Training for team members

Approach

Implemented Docker for containerization and Grafana for system-wide observability. Created comprehensive dashboards and alerting systems for proactive monitoring.

Key Decisions

Prometheus + Grafana stack

Reasoning:

Industry-standard, open-source solution with extensive community support

Alternatives considered:
  • Commercial monitoring tools
  • ELK Stack

Custom dashboard templates

Reasoning:

Ensured consistency and quick onboarding for different team members

Alternatives considered:
  • Generic dashboards
  • Third-party templates

Tech Stack

  • Docker
  • Prometheus
  • Grafana
  • Linux
  • Node Exporter
  • cAdvisor

Result & Impact

  • 100% of critical services
    Monitoring Coverage
  • 65% faster recovery
    MTTR Improvement
  • Under 30 seconds
    Alert Response Time

Transformed the team's ability to detect and respond to issues, significantly reducing system downtime and improving overall reliability.

Tech Stack

DockerPrometheusGrafanaLinuxNode ExportercAdvisor

Learnings

  • Observability is more than monitoring—it's about understanding system behavior
  • Custom dashboards need continuous refinement based on team needs
  • Documentation enables team-wide adoption

Project Details

As a DevOps intern at SLT-MOBITEL Digital Labs, I was tasked with modernizing the company’s approach to infrastructure monitoring. This project exposed me to enterprise-grade observability requirements and helped me develop critical DevOps skills.

Key Features

  • Real-time Dashboards: Custom Grafana dashboards for all critical services
  • Alert Management: Automated alerts for performance degradation
  • Log Aggregation: Centralized logging for troubleshooting
  • Custom Metrics: Application-specific metrics tracking
  • Incident Response: Automated Runbooks for common issues

Technical Implementation

Implemented a complete observability stack using Docker containers, Prometheus for metrics collection, and Grafana for visualization. Created custom exporters for application-specific metrics and integrated with existing infrastructure.

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