DEVOPS / A CONCEPT NOTE
OpenTelemetry
standardizing logs, metrics, and traces
Overview · mechanism
pitfall · examples
01 / THE SHORT VERSION
The idea in a few sentences.
An open-source observability framework (CNCF) providing a standardized set of APIs, SDKs, and collectors to capture and export telemetry data across microservices.
02 / FOLLOW THE MECHANISM
How telemetry collection flows
Instrumentation
app code utilizes OpenTelemetry SDK to record span, log, or metric.
Local export
sends batches of telemetry records over gRPC/HTTP using OTLP protocol.
OTel Collector
collects, filters, transforms, and buffers metrics from all services.
Backend routing
forwards curated records to monitoring backends (Datadog, Jaeger, Prometheus).
04 / COMMAND NOTES
Read the command, then the result.
Inspect the flags and arguments before trying an example. Snippets can need local setup, replacement values, or resources in your own environment.
start local telemetry collector
otelcol --config config.yaml05 / CHECK YOURSELF
Could you explain OpenTelemetry to a teammate?
Try it out loud in two sentences: what it is, and the one detail that changes the picture. If you stall, the gap is the part to reread.