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3752fd0386
- Kyverno 3.3.4 via Helm (HA config: 3 admission, 2 background replicas) - Validation policies: - disallow-privileged-containers (Enforce) - require-resource-limits (Enforce) - require-labels (Audit - standard k8s labels) - require-run-as-non-root (Audit) - disallow-latest-tag (Enforce - GitOps reproducibility) - Mutating policy: - add-default-securitycontext (seccomp, drop caps, read-only fs) - System namespaces excluded (kube-system, kyverno, istio-system) - Auto-discovered by ArgoCD ApplicationSet Reference: CIS Kubernetes Benchmark, Pod Security Standards
48 lines
1.5 KiB
YAML
48 lines
1.5 KiB
YAML
# infrastructure/kyverno/policies/disallow-privileged.yaml
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# Prevents pods from running as privileged containers
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# Security baseline: CIS Benchmark 5.2.1
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apiVersion: kyverno.io/v1
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kind: ClusterPolicy
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metadata:
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name: disallow-privileged-containers
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annotations:
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policies.kyverno.io/title: Disallow Privileged Containers
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policies.kyverno.io/category: Pod Security Standards (Baseline)
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policies.kyverno.io/severity: high
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policies.kyverno.io/subject: Pod
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policies.kyverno.io/description: >-
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Privileged containers have all Linux capabilities and can access
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host resources. This policy prevents privileged containers from
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being created except in system namespaces.
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spec:
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validationFailureAction: Enforce
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background: true
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rules:
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- name: privileged-containers
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match:
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any:
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- resources:
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kinds:
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- Pod
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exclude:
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any:
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- resources:
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namespaces:
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- kube-system
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- kyverno
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- istio-system
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- cert-manager
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validate:
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message: "Privileged containers are not allowed. Set securityContext.privileged to false."
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pattern:
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spec:
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containers:
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- securityContext:
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privileged: "false"
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=(initContainers):
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- securityContext:
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privileged: "false"
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=(ephemeralContainers):
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- securityContext:
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privileged: "false"
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