Tag: prometheus

Prometheus recording rules precompute the expensive queries behind your Grafana panels. Learn naming, chaining, testing with promtool, and when to skip them.

VictoriaMetrics as a Prometheus drop-in replacement: lower RAM footprint, longer retention, better compression. When the switch actually pays off.

Which 30 Node Exporter metrics matter for Prometheus monitoring. Skip the 200 noisy ones. Textfile collector trick included.

Prometheus pull metrics are great until they aren't. When batch jobs, NAT, and ephemeral containers break scraping, Pushgateway, PushProx, and alternatives explained.

Blackbox exporter Prometheus probes HTTP TCP DNS ICMP synthetic monitoring without paying for Pingdom or SaaS uptime tools

Error budgets work on a home lab too. What an SLI and SLO actually are, picking an availability target you can hit, 28-day windows, and burn-rate alerts.

Master Alertmanager routing trees: severity labeling, inhibition, grouping, and multi-receiver logic for reliable home lab alerts that work at 3 AM

Mimir for long-term Prometheus storage. S3-backed, horizontally scaled alternative to Thanos for capacity planning and compliance.

Prometheus federation for multi-site home labs: hierarchical scraping, cross-cluster aggregation, federation vs remote_write, practical config.

Stop guessing which container is eating your RAM. Set up cAdvisor + Prometheus to get real per-container CPU, memory, and network metrics in your homelab.

Prometheus scrapes metrics. Grafana makes them pretty. Alertmanager wakes you up at 2 AM. Here's how to wire all three together into a monitoring stack that actually works.

Shorter intervals = more data. But also more storage, CPU load, and potential instability. Here's the tradeoff you're actually making.