feat(grafana): add Kubernetes cAdvisor 315 curated pack - #388
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Tracking: closes #392 under https://github.com/elastic/obs-integration-team/issues/1200. Please add |
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Curated pack for grafana.com dashboard 315 ("Kubernetes cluster
monitoring (via Prometheus)"), a cAdvisor-only cluster dashboard authored
against a pre-1.16 cAdvisor lineage.
The pack bridges the legacy conventions so the operational per-pod /
per-container panels render on a modern Elastic cAdvisor scrape:
- label_rewrites map pod_name/container_name -> labels.pod/labels.container
- ignored_labels strip dead selector matchers (kubernetes_io_hostname,
image, name) that would otherwise filter every panel to empty
- metric_kinds classify the cAdvisor counters/gauges
- explicit query_overrides for the Pods CPU/memory panels keep the ES|QL
output column and the Lens breakdown aligned on labels.pod (the native
PROMQL DSL otherwise leaves the breakdown accessor on the pre-rewrite
pod_name and fails with "invalid column")
Obsolete container runtimes are documented as honest gaps, never faked
into a single misleading aggregate: docker/rkt series are dropped from the
multi-runtime container panels (disclosed as approximations) and the
systemd system-service panels degrade to an honest empty via an
impossible-filter override instead of erroring on systemd_service_name.
Adds a synthetic k8s_exporter to the parity-rig curated stack (cAdvisor +
KSM + node_exporter series) so 315 can be validated end-to-end. Live
render audit: 19 rendered / 0 error / 2 honest empty gaps. Fidelity
manifest, design doc, docs/sources/grafana.md, and offline fixture tests
included; registry provenance pinned (rev 3) and verified.
…up id Native butterfly fusion labeled transmit as Value B, and All-processes legends collapsed to (null) without a per-container cgroup id. Explicit ES|QL overrides plus producer id labels keep the Kibana legends aligned with Grafana.
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Summary
pod_name/container_name→labels.pod/labels.container, dead matcher strip, k8s-only container panels, honest systemd empty.labels.pod, Pods/All-processes network legends are Received/Sent (notValue B), and All-processes groups by cgroupid.container_*+machine_*+ per-container cgroupidfor live validation.Stacks on #386 (
feat/grafana-12485-postgresql-exporter-pack). Follow-up pack is Grafana 6417 (kube-state-metrics) on top of this branch.Test plan
pytest tests/test_curated_packs.py -k 315make lintmetrics-k8s.prometheus-default(prometheus_native); confirm Pods network Received/Sent, All-processes cgroup legends, systemd panels empty (not error)Fixes #392