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Improve capacity advisor control-plane guidance

This commit is contained in:
juvdiaz 2026-06-29 21:17:00 -06:00
parent 0544dba9f5
commit a2ef9b7627
1 changed files with 34 additions and 5 deletions
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39
scripts/capacity-advisor
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@ -35,12 +35,20 @@ missing_count = int(missing_match.group(1)) if missing_match else 0
pressure = any(token in lowered for token in ["diskpressure", "memorypressure", "node pressure"])
worker_storage_warn = "worker storage" in lowered and "warn" in lowered
non_system_control_plane = False
control_plane_section = text.split("## control-plane", 1)[-1]
control_plane_tainted = "node-role.kubernetes.io/control-plane" in control_plane_section and ":NoSchedule" in control_plane_section
app_control_plane_pods = []
legacy_control_plane_pods = []
for line in control_plane_section.splitlines():
if re.match(r"\s*(argocd|website-production|demos-static|heimdall|security-lab|monitoring)\s+", line):
non_system_control_plane = True
break
match = re.match(r"\s*([a-z0-9-]+)\s+([^\s]+)\s+([A-Za-z]+)\s*$", line)
if not match:
continue
namespace, pod_name, status = match.groups()
if namespace == "arr-stack":
legacy_control_plane_pods.append((namespace, pod_name, status))
elif namespace in {"argocd", "website-production", "demos-static", "heimdall", "n8n", "security-lab", "monitoring"}:
app_control_plane_pods.append((namespace, pod_name, status))
print("Jeannie Capacity Advisor")
print("========================")
@ -55,7 +63,28 @@ if missing_count:
"code/config: add resources to app manifests or Helm values",
)
)
if non_system_control_plane:
if legacy_control_plane_pods:
count = len(legacy_control_plane_pods)
recommendations.append(
(
"Remove stale Kubernetes ARR workloads",
f"{count} legacy arr-stack pod(s) still exist in Kubernetes even though ARR now lives in Docker Compose on Debian.",
"kubectl delete namespace arr-stack",
"cluster cleanup: active ARR state is infra/arr-stack, not archive/apps/arr-stack",
)
)
if app_control_plane_pods and control_plane_tainted:
count = len(app_control_plane_pods)
namespaces = ", ".join(sorted({namespace for namespace, _, _ in app_control_plane_pods}))
recommendations.append(
(
"Reschedule remaining app/platform pods off Debian",
f"Debian is already tainted, but {count} pod(s) still run there in: {namespaces}. Existing pods are not evicted by a NoSchedule taint.",
"./jeannie control-plane pods",
"scheduling: restart or drain selected workloads; if they return to Debian, check tolerations, node selectors, affinity, and worker readiness",
)
)
elif app_control_plane_pods:
recommendations.append(
(
"Keep app/data-plane pods off Debian",