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1cfc80d32a
* Allow kyverno-policies to have preconditions defined Signed-off-by: Trey Dockendorf <tdockendorf@osc.edu> * Fix docs Signed-off-by: Trey Dockendorf <tdockendorf@osc.edu>
80 lines
3.1 KiB
YAML
80 lines
3.1 KiB
YAML
{{- $name := "disallow-capabilities-strict" }}
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{{- if eq (include "kyverno-policies.podSecurityRestricted" (merge (dict "name" $name) .)) "true" }}
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{{- include "kyverno-policies.supportedKyvernoCheck" (dict "top" . "ver" ">= 1.6.0-0") }}
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apiVersion: kyverno.io/v1
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kind: ClusterPolicy
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metadata:
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name: {{ $name }}
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annotations:
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policies.kyverno.io/title: Disallow Capabilities (Strict)
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policies.kyverno.io/category: Pod Security Standards (Restricted)
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{{- if .Values.podSecuritySeverity }}
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policies.kyverno.io/severity: {{ .Values.podSecuritySeverity | quote }}
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{{- end }}
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policies.kyverno.io/minversion: 1.6.0
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kyverno.io/kyverno-version: 1.6.0
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kyverno.io/kubernetes-version: "1.22-1.23"
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policies.kyverno.io/subject: Pod
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policies.kyverno.io/description: >-
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Adding capabilities other than `NET_BIND_SERVICE` is disallowed. In addition,
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all containers must explicitly drop `ALL` capabilities.
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spec:
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validationFailureAction: {{ .Values.validationFailureAction }}
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{{- with concat (index .Values "validationFailureActionOverrides" "all") (default list (index .Values "validationFailureActionOverrides" $name)) }}
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validationFailureActionOverrides: {{ toYaml . | nindent 4 }}
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{{- end }}
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background: {{ .Values.background }}
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rules:
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- name: require-drop-all
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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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{{- with merge (index .Values "policyExclude" "require-drop-all") (index .Values "policyExclude" $name) }}
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exclude:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with merge (index .Values "policyPreconditions" "require-drop-all") (index .Values "policyPreconditions" $name) }}
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preconditions:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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validate:
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message: >-
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Containers must drop `ALL` capabilities.
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foreach:
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- list: request.object.spec.[ephemeralContainers, initContainers, containers][]
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deny:
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conditions:
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all:
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- key: ALL
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operator: AnyNotIn
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value: "{{`{{ element.securityContext.capabilities.drop || '' }}`}}"
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- name: adding-capabilities-strict
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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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{{- with merge (index .Values "policyExclude" "adding-capabilities-strict") (index .Values "policyExclude" $name) }}
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exclude:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with merge (index .Values "policyPreconditions" "adding-capabilities-strict") (index .Values "policyPreconditions" $name) }}
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preconditions:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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validate:
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message: >-
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Any capabilities added other than NET_BIND_SERVICE are disallowed.
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foreach:
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- list: request.object.spec.[ephemeralContainers, initContainers, containers][]
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deny:
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conditions:
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all:
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- key: "{{`{{ element.securityContext.capabilities.add[] || '' }}`}}"
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operator: AnyNotIn
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value:
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- NET_BIND_SERVICE
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- ''
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{{- end }}
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