Observability
5 articles, grouped by kind; the order follows the tracks.
Concepts 1
-
PromQL: the Prometheus query language
The Prometheus query language: select series by labels, turn a counter into a rate, add up and compare.
15 minq
Services 4
-
Prometheus: metric collection and alerting rules
A metrics server: polls exporters itself, stores time series, answers PromQL queries and evaluates alerting rules.
18 minsystemctl enablepromtool checksystemctl reload -
node_exporter: machine metrics for Prometheus
The Prometheus exporter for the machine itself: serves CPU, memory, disk, network and service metrics on :9100.
14 minsystemctl enablesystemctl statusss -tlnp -
Alertmanager: who gets alerts and how often
The service that takes alerts from Prometheus, groups and silences them, and routes notifications to receivers.
18 minamtool check-configsystemctl reloadamtool alert -
Grafana — dashboards
Visualizing metrics and logs — data sources, dashboards, variables, alerts.
4 minsystemctl statusss -tlnpgrafana-cli admin
Nothing found. Try a shorter query.