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kspan: Traces from Events
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mita
May 20, 2021
Technology
1
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kspan: Traces from Events
kspan: Traces from Events
Kubernetes Meetup Tokyo #41 LT
mita
May 20, 2021
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Transcript
Recap kspan Traces from Events https://static.sched.com/hosted_ fi les/kccnceu2021/fd/Traces%20from%20Events%20%28Kspan%29.pdf https://sched.co/iE3j
Recap Name: mita Role: Infrastructure Engineer Interest: - Improving Operator
Experience - Cloud Native - KRM Ecosystems - Kubernetes Operators - Observability - Chaos Engineering - Infrastructure as Code
Recap Observabilityͷ̏ຊப • 2017ʹɺObservabilityͷ3ຊபͱͯ͠ Logging, Metrics, Tracing͕ఏএ͞Εͨ • New RelicͰM.E.L.T(Metrics,
Events, Logs, Traces)ͷ4ͭͱఆٛͯ͠Δ(https://newrelic.com/resources/ ebooks/what-is-observability) https://peter.bourgon.org/blog/2017/02/21/metrics-tracing-and-logging.html
Recap What is kspan? • KubeCon EUͰհ͞ΕͨWeaveworksͷπʔϧ(Experimental) • Kubernetes্Ͱੜ͞ΕΔEventΛTraceʹม͢Δ https://github.com/weaveworks-experiments/kspan
Recap Architecture https://static.sched.com/hosted_ fi les/kccnceu2021/fd/Traces%20from%20Events%20%28Kspan%29.pdf
Recap Demo Jaeger kspan Nginx Deployment Manifest api-server 4. Emit
spans as OTLP(OpenTelemetry Protocol) 2. watch events 3. convert events to spans 1. apply manifest
Recap ༨ஊ Kubernetes EventͷTimestamp • ԼهIssueʹ͋Δ௨ΓɺޙํޓੑΛอͬͨ··millisecond୯ҐͷϑΥʔ ϚοτΛ৽ͨʹ࠾༻͢Δͷݫ͍͠ • ͦͷͨΊɺඵ୯ҐͷEventͷॱং͕ٯస͢Δ •
https://github.com/kubernetes/kubernetes/issues/81026 • EventϦιʔεࣗମϚΠΫϩඵ୯ҐͷλΠϜελϯϓΛอ͍࣋ͯ͠Δ https://pkg.go.dev/k8s.io/api/core/v1#Event