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DevOps & observability · #prometheus
Recording rules precompute expensive PromQL into new metrics, but each rule adds active series that consume storage and CPU. Learn to design rules that actually reduce cardinality, chain intervals without hidden latency, and avoid silent gaps in remote storage.
Prometheus reports down targets for a healthy Kubernetes service this diagnostic guide walks selector mismatches endpointSlice reconciliation and scrape config fixes to restore metric ingestion.
Step‑by‑step diagnostic guide for Prometheus remote_write failures, covering connectivity, TLS, auth, config, and storage‑side checks with fixes and escalation criteria.
Cut Grafana panel load times by pre‑computing heavy PromQL expressions with Prometheus recording rules. Learn how to set them up, verify them, and balance storage and CPU costs.
A decision guide that compares remote write, federation, and Thanos sidecar for retaining Prometheus metrics, with a concrete remote‑write configuration example and verification steps.
Learn how to set up the OpenTelemetry Collector to receive OTLP traces and metrics and forward them to Jaeger, Prometheus, and Loki with proper batching, retry logic, and resource attribution. Follow a step‑by‑step guide, validate the pipeline, and recover from common issues.
Stop dashboard timeouts caused by high-cardinality PromQL queries. Learn how to implement Prometheus recording rules to pre-compute aggregations and reduce query latency.
A decision guide for picking Prometheus alert evaluation strategies: immediate firing, duration‑based "for" clauses, and recording rules. Includes a comparison table, trade‑off analysis, and a step‑by‑step implementation you can validate today.
How Grafana dashboard variables interpolate into panel queries, with a worked Prometheus env→service→instance chain, per-data-source quoting rules, and the multi-value and performance pitfalls to avoid.
opentelemetry
grafana