eda4b31502
This adds a chart that will generate arbitrary Kubernetes PodSecurityPolicy objects, and ClusterRoles to provide access to them. It will also set up one (or zero) default bindings for generic "categories" of subjects, as desired: - serviceaccounts - authenticated users - unauthenticated users The default values specify a highly permissive security policy that is bound by default to serviceaccounts and authenticated users. The policy is expected to be refined over time, and should be overridden by operators per their workloads and security needs. Change-Id: I69917217f85881b2627706abce66c7044b40a448
71 lines
2.3 KiB
YAML
71 lines
2.3 KiB
YAML
{{/*
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Copyright 2018, AT&T Intellectual Property
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/}}
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{{- if .Values.manifests.podsecuritypolicy }}
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{{- $envAll := . }}
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{{/* Create one ClusterRole and PSP per PSP definition in values */}}
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{{- range $pspName, $pspDetails := .Values.data }}
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---
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apiVersion: extensions/v1beta1
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kind: PodSecurityPolicy
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metadata:
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name: {{ $pspName }}
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labels:
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{{ tuple $envAll "podsecuritypolicy" "policy" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
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spec:
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{{ toYaml $pspDetails | indent 2 }}
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---
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kind: ClusterRole
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: {{ $pspName }}
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labels:
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{{ tuple $envAll "podsecuritypolicy" "policy" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
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rules:
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- apiGroups: ['policy']
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resources: ['podsecuritypolicies']
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verbs: ['use']
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resourceNames:
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- {{ $pspName }}
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{{- end }}
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{{/* Configure ClusterRoles to bind to different subjects as defaults */}}
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{{- range $rbacSubject, $defaultRole := .Values.conf.defaults }}
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{{ if and $defaultRole (not (eq "nil" $defaultRole)) }}
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---
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kind: ClusterRoleBinding
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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{{/* NOTE: the role name is included in the name of the binding below
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for the sake of chart upgrades. The roleRef for a binding is immutable,
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so if the the defaultRole changes, we need a different binding to
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reflect that. This issue was only sporadic! */}}
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name: psp-binding-for-{{- $rbacSubject -}}-{{- $defaultRole }}
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labels:
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{{ tuple $envAll "podsecuritypolicy" "policy" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
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roleRef:
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kind: ClusterRole
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name: {{ $defaultRole }}
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apiGroup: rbac.authorization.k8s.io
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subjects:
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- kind: Group
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name: system:{{- $rbacSubject }}
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apiGroup: rbac.authorization.k8s.io
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{{- end }}
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{{- end }}
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{{- end }}
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