feat(k8s): Phase 4 — workload cost attribution + health audit#152
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April 29, 2026 14:54
Estimate Kubernetes spend by attributing each pod's share of its host
node's hourly price. Pod share = max(cpu_request / node_alloc_cpu,
mem_request / node_alloc_mem); pod cost = node_hourly * share. This is
the standard Kubecost-style model.
• new internal/k8s/cost package — WorkloadCostAttributor with
aggregations by pod, workload, namespace, and node
• static AWS on-demand price fallback (m5/c5/r5/t3 + i variants);
operators with real billing data plug in via --prices <file> and
fall back to the static table on misses (CompositePriceLookup)
• CPU/memory quantity parsers cover all standard k8s suffixes
(m, Ki/Mi/Gi, k/M/G, plain bytes)
• ReplicaSet pods unwrap to their parent Deployment by stripping the
podtemplate hash; Job pods named with a trailing unix-ts unwrap to
CronJob; orphan pods report kind=Pod
• clanker k8s cost subcommand: --by pod|workload|namespace|node,
--prices override, --top N, JSON output
Read-only — only kubectl get is invoked. Tests cover happy path,
error propagation, divide-by-zero on broken nodes, owner-ref unwrap
edge cases, and provider detection.
One-shot "what's broken in this cluster" report. Wraps the existing DiagnosticsManager.DetectClusterIssues and classifies each issue into reliability categories so operators see a count first, the long flat issue list second. Categories: • CrashLoopBackOff • OOMKilled (matches both "OOMKilled" and "OOM killed" wordings) • ImagePullBackOff / ErrImagePull • RestartSpike (≥5 restarts) • NotReady • NodePressure (Memory/Disk/PID/NetworkUnavailable) • Other Output also surfaces "Hot pods" — the top 25 pods with the most issues, flagged with their categories so operators know where to look first. Read-only — only kubectl get is invoked. Tests cover the healthy-cluster empty case, classification across all categories, and the HotPods top-N trim.
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Summary
Phase 4 ships the two largest remaining K8s gaps from the Tier-2 backlog:
Commits
Test plan