Observability Semantics & Cost Check

Goal

Verify that the selected telemetry path represents the intended signal within its identity, freshness and cardinality limits.

Context

Identify selected metric/log/alert/dashboard, actual engines/versions, units and labels, expected signal meaning, cardinality budget and observation window.

Scenarios

Select the cases that test the requested guarantee. Define expected state/effects before execution; use the authorized environment and a valid control.

• Generate representative metrics/logs across tenants, status classes, replicas, and error paths; measure series/stream growth and ingestion rejection.
• Run recording/alert rules through normal, reset, missing, stale, burst, and recovery windows.
• Provision dashboards/alerts in a disposable environment and validate datasource, variables, units, permissions, links, and query errors.
• Exercise VictoriaLogs ingestion backpressure, malformed timestamps, tenant mismatch, retention boundary, and bounded query concurrency.
• Compare end-to-end signal latency and correlation from emitted event to operator-visible dashboard/alert.

Verification

Compare emitted and queried values, reset/no-data behavior, alert transitions, tenant visibility and measured series/stream or query growth.

Execute and decide

Use a controlled emitter/time series or log corpus with expected counts, units, timestamps, tenant and label dimensions. Establish the normal query/operator result, then replay the selected reset, stale/missing, burst, ingestion-failure or recovery window.

Observe ingestion acceptance, queried values, rule/alert transitions and the displayed units/identity. Measure actual series/stream/query growth for the supplied dimensions; distinguish a theoretical cardinality bound from observed combinations. Route test alerts to a controlled sink rather than real recipients unless authorized.

Return passed, failed or blocked with input/window, expected/observed signal, resource evidence and untested engine/production layers. Feed a failure into the authorized signal-owner repair, repeat its corpus/control and finish Patch Checking for source changes.