32 lines
1 KiB
YAML
32 lines
1 KiB
YAML
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apiVersion: kyverno.io/v1
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kind: ClusterPolicy
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metadata:
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name: min-replicas
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annotations:
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policies.kyverno.io/title: Ban single-replica Deployments
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policies.kyverno.io/category: Best Practices
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policies.kyverno.io/severity: medium
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policies.kyverno.io/description: >-
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Audit Deployments whose effective replica count is exactly one. Stopped
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Deployments may use zero, and available Deployments must use at least two
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unless a resource-specific exception is approved.
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spec:
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validationFailureAction: Audit
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background: true
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rules:
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- name: min-replicas
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match:
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any:
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- resources:
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kinds:
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- Deployment
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validate:
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message: >-
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Deployment replica count must be zero or at least two. A single
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replica requires a resource-specific PolicyException.
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deny:
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conditions:
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all:
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- key: "{{ request.object.spec.replicas || `1` }}"
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operator: Equals
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value: 1
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