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kyverno/charts/kyverno-policies/templates/baseline/disallow-proc-mount.yaml
Matthias Weilinger bb3e7d9ddc
add allowExistingViolations option in policy chart (#11656)
Until now it was not possible to set the allowExistingViolations for predefined policies in the policies chart. By default it should be set to , identical to how it is set up in the CRDs. Not only does this now allow users to set the config according to their needs, but this also solves a problem with ArgoCD. As the CRDs set it to true, but the template does not specifically declare the field, ArgoCD falls into a constant sync loop of trying to remove the field.

Signed-off-by: ProbstenHias <matthias.weilinger@gmx.de>
Co-authored-by: Vishal Choudhary <vishal.choudhary@nirmata.com>
2024-12-02 09:20:26 +05:30

72 lines
3.1 KiB
YAML

{{- $name := "disallow-proc-mount" }}
{{- if eq (include "kyverno-policies.podSecurityBaseline" (merge (dict "name" $name) .)) "true" }}
apiVersion: kyverno.io/v1
kind: {{ .Values.policyKind }}
metadata:
name: {{ $name }}
annotations:
{{- with .Values.autogenControllers }}
pod-policies.kyverno.io/autogen-controllers: {{ . }}
{{- end }}
policies.kyverno.io/title: Disallow procMount
policies.kyverno.io/category: Pod Security Standards (Baseline)
{{- if .Values.podSecuritySeverity }}
policies.kyverno.io/severity: {{ .Values.podSecuritySeverity }}
{{- end }}
policies.kyverno.io/subject: Pod
kyverno.io/kyverno-version: {{ default .Chart.AppVersion (include "kyverno-policies.kyvernoVersion" .) }}
kyverno.io/kubernetes-version: "{{ default .Chart.KubeVersion .Values.kubeVersionOverride }}"
policies.kyverno.io/description: >-
The default /proc masks are set up to reduce attack surface and should be required. This policy
ensures nothing but the default procMount can be specified. Note that in order for users
to deviate from the `Default` procMount requires setting a feature gate at the API
server.
labels: {{ include "kyverno-policies.labels" . | nindent 4 }}
spec:
background: {{ .Values.background }}
failurePolicy: {{ .Values.failurePolicy }}
rules:
- name: check-proc-mount
match:
any:
- resources:
kinds:
- Pod
{{- with merge (index .Values "policyExclude" "check-proc-mount") (index .Values "policyExclude" $name) }}
exclude:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with index .Values "policyPreconditions" $name }}
preconditions:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- if not (quote .Values.skipBackgroundRequests | empty) }}
skipBackgroundRequests: {{ .Values.skipBackgroundRequests }}
{{- end }}
validate:
{{- with index .Values "validationFailureActionByPolicy" $name }}
failureAction: {{ toYaml . }}
{{- else }}
failureAction: {{ .Values.validationFailureAction }}
{{- end }}
{{- with concat (index .Values "validationFailureActionOverrides" "all") (default list (index .Values "validationFailureActionOverrides" $name)) }}
failureActionOverrides: {{ toYaml . | nindent 8 }}
{{- end }}
allowExistingViolations: {{ .Values.validationAllowExistingViolations }}
message: >-
Changing the proc mount from the default is not allowed. The fields
spec.containers[*].securityContext.procMount, spec.initContainers[*].securityContext.procMount,
and spec.ephemeralContainers[*].securityContext.procMount must be unset or
set to `Default`.
pattern:
spec:
=(ephemeralContainers):
- =(securityContext):
=(procMount): "Default"
=(initContainers):
- =(securityContext):
=(procMount): "Default"
containers:
- =(securityContext):
=(procMount): "Default"
{{- end }}