Erich Blume
495e45d01d
## Summary The weekly Prowler IaC scan reported 6 critical findings against `argocd/manifests/`. They split cleanly into two patterns: - **Legitimate-by-design RBAC → mute with new compensating controls** - `external-secrets-controller`, `external-secrets-cert-controller` manage `secrets` (KSV-0041) and the cert-controller mutates its own webhook configurations (KSV-0114). This is what the operator is *for*. New CC: `operator-purpose-bound-rbac`. - `kube-state-metrics` (both `minikube-indri` and `k3s-ringtail`) holds `list/watch` on secrets to expose `kube_secret_info` and `kube_secret_labels` metrics. KSM's metric schema only reads metadata, never the `data:` field. New CC: `kube-state-metrics-metadata-only`. - **Over-broad RBAC → fix** - `grafana-clusterrole` had `get/watch/list` on `secrets` because the dashboard-sidecar config used `RESOURCE=both` (ConfigMaps + Secrets). Nothing in the cluster labels Secrets with `grafana_dashboard=1`, so this was unused power. Switched both sidecar instances to `RESOURCE=configmap` and removed `secrets` from the ClusterRole. The IaC cronjob also did not previously pass `--mutelist-file`, which is why every IaC finding reported as unmuted regardless of mutelist configuration. The new `mutelist/iac.yaml` is bundled into the existing `prowler-mutelist` ConfigMap and mounted via `items:` selector. ## Test plan - [ ] `kubectl --context=minikube-indri kustomize argocd/manifests/prowler/` — already passes locally - [ ] `kubectl --context=minikube-indri kustomize argocd/manifests/grafana/` — already passes locally - [ ] Deploy from this branch via `argocd app set prowler --revision prowler-iac-mutelist && argocd app sync prowler` and same for `grafana` - [ ] Manually trigger the IaC cronjob and verify `MUTED=True` on the 6 critical findings (`kubectl --context=minikube-indri -n prowler create job --from=cronjob/prowler-iac-scan prowler-iac-test`) - [ ] Restart grafana pod and confirm dashboards still render (sidecar still finds them via ConfigMap watch) - [ ] After verify, `argocd app set <app> --revision main && argocd app sync <app>` post-merge 🤖 Generated with [Claude Code](https://claude.com/claude-code) Reviewed-on: #340
54 lines
1.2 KiB
YAML
54 lines
1.2 KiB
YAML
apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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name: grafana-clusterrole
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/instance: grafana
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rules:
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- apiGroups: [""]
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resources: ["configmaps"]
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verbs: ["get", "watch", "list"]
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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name: grafana-clusterrolebinding
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/instance: grafana
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: grafana-clusterrole
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subjects:
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- kind: ServiceAccount
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name: grafana
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namespace: monitoring
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: Role
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metadata:
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name: grafana
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namespace: monitoring
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/instance: grafana
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rules: []
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---
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apiVersion: rbac.authorization.k8s.io/v1
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kind: RoleBinding
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metadata:
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name: grafana
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namespace: monitoring
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labels:
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app.kubernetes.io/name: grafana
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app.kubernetes.io/instance: grafana
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: Role
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name: grafana
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subjects:
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- kind: ServiceAccount
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name: grafana
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namespace: monitoring
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