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Alex Spinov
Alex Spinov

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Prometheus Has a Free Monitoring and Alerting Toolkit — The Industry Standard for Metrics

#cloud #monitoring #opensource #devops

A DevOps engineer was asked: "Why was the API slow yesterday at 3 PM?" Without metrics, the answer was always "I don't know."

The Observability Gap

You cannot fix what you cannot measure. Datadog charges $15-23 per host. New Relic $0.30 per GB ingested. For 10 servers, that is $150-230/month just to see graphs.

Prometheus is the free, open-source monitoring standard. Pull-based metrics, powerful queries, alerting - used by Google, Uber, and almost every Kubernetes cluster.

What Prometheus Offers for Free

  • Time Series Database - Efficient storage for millions of metrics
  • PromQL - Powerful query language for slicing and dicing data
  • Pull-Based - Scrapes targets at configurable intervals
  • Service Discovery - Auto-find targets in Kubernetes, Consul, EC2
  • Alertmanager - Route alerts to Slack, PagerDuty, email, webhooks
  • Exporters - 100s of exporters: Node, MySQL, PostgreSQL, Redis, Nginx
  • Grafana Integration - The standard data source for Grafana dashboards
  • Federation - Scale across multiple Prometheus servers

Quick Start 

docker run -d -p 9090:9090 -v prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus
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GitHub: prometheus/prometheus - 57K+ stars

Need to monitor and scrape data from multiple web services automatically? I build custom scraping solutions. Check out my web scraping toolkit or email me at spinov001@gmail.com for a tailored solution.

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