The document discusses the significance of OpenTelemetry in enhancing observability within cloud-native environments, focusing on its implementation in a Kubernetes cluster. It highlights data volume experiments and emphasizes the cost-effectiveness of observability solutions relative to production infrastructure costs. The text covers key concepts like tracing, spans, and the role of telemetry in data analysis for remote systems.

1. Observability For
You and Me with
OpenTelemetry
Eric D. Schabell
Director Evangelism
@ericschabell{@fosstodon.org}
14 Nov 2023
KCD Denmark

2. chronosphere.io
Cloud Native O11y (at scale)
Nuts & Bolts of OpenTelemetry
Getting Your Feet Wet

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Cloud Native Observability at Scale

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Cloud Native

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Data volume
Experiment:
- Hello World app on 4 node
Kubernetes cluster with Tracing,
End User Metrics (EUM), Logs,
Metrics (containers / nodes)
- 30 days == +450 GB

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Retention
Retention
Retention
Retention
Retention
Retention
Retention

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Cloud Native at Scale

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Simple O11y

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O11y at Scale (over time…)

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“It’s remarkable how common this
situation is, where an organization
is paying more for their
observability data, than they do
for their production
infrastructure.”
?

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O11y at Scale (need)

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Telemetry is automatically collecting, transmitting
and measuring data from remote sources. It
transmits data back to a central location and
analyzes to monitor and control remote systems.

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Nuts & Bolts of
OpenTelemetry

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https://opentelemetry.io

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OpenTelemetry is not an
observability back-end.

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Traces give us the big picture and understanding
the full path a request takes in your application.
Spans represents a unit of work or operation and
are building blocks of traces.

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● API - generating & correlating tracing data
● SDK - language specific impl
● Data - OpenTelemetry Protocol (OTLP)
Specification

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Applications (Java)
OTel Auto Instrumentation (libraries)
OTel API
OTel SDK
OTel Collector
OTLP
OTLP
OTLP
(Auto) instrumentation

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Host
Observability Backend
(Prometheus, Jaeger, Fluent Bit, etc.),
Applications
OTel Auto Instrumentation
OTel API
OTel SDK
OTel Collector Agent
OTLP
OTLP
OTLP
OTLP
OTLP
Collector (agent)

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Host
Host
Host
Observability Backend
(Prometheus, Jaeger, Fluent Bit, etc.),
Applications
OTel Auto Instrumentation
OTel API
OTel SDK
OTel Collector Agent
OTLP
OTLP
OTLP
OTLP
Collector (gateway)
OTel Collector Gateway

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Observability Backend
(Prometheus, Jaeger, Fluent Bit, etc.),
OTel Collector
OTLP
Telemetry
(Spans)
Collector (internals)
Receiver Processor Exporter

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Spans and Traces

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Kubernetes Operator
Collector
Auto-instrumentation
Collector
Auto-instrumentation
Collector
Auto-instrumentation
Collector
Auto-instrumentation

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Getting Your Feet Wet

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CNCF - cloud-native.slack.com

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Special Interest Groups

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CNCF - End User Community

28. Questions?
Eric D. Schabell
Director Evangelism
@ericschabell{@fosstodon.org}