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Posts tagged “prometheus”
Every post filed under “prometheus”, newest first.
3posts.
OpsCanopy9 min read
Why Did Prometheus Drop My Target? Debugging relabel_configs
A target vanished or a label disappeared after relabeling. Debug Prometheus relabel_configs vs metric_relabel_configs, regex anchoring and keep/drop logic.
- prometheus
- observability
- relabeling
OpsCanopy10 min read
Prometheus Relabel Actions: keep, labelmap, hashmod
A field reference for all 11 Prometheus relabel actions — replace, keep, drop, labelmap, labeldrop, hashmod, keepequal, lowercase — each with an example.
- prometheus
- observability
- relabeling
OpsCanopy5 min read
How to read a PromQL query
A PromQL query reads inside out, not left to right. The four layers — selectors, ranges, functions and aggregations — so you can decode any expression fast.
- promql
- prometheus
- observability