#Observability
2 posts
Kubernetes and Cloud Native Associate (KCNA) #6: Cloud Native Observability (8%) — Telemetry, Prometheus, Cost Management
The three pillars of telemetry (metrics, logs, traces), Prometheus pull-based metric collection with PromQL, Alertmanager, and Grafana, OpenTelemetry and distributed tracing, SLI/SLO/SLA and the golden signals, and FinOps cost management — a walk through KCNA Domain 4.
K8s Advanced #5: Observability — Prometheus / Grafana / Loki / OpenTelemetry
Operational cluster observability is composed of three axes — metrics, logs, and traces. The K8s standard stack for each axis is nearly settled. Metrics with Prometheus + kube-state-metrics + node-exporter, logs with Loki (or EFK), traces with OpenTelemetry, visualization with Grafana, alerting with Alertmanager. This post organizes the three-axis model, the standard components for each axis, and operational principles like cardinality, retention period, and alert design — all in one cycle.