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Add pod security policy to Helm chart #234

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merged 3 commits into from
Jul 6, 2019
Merged

Add pod security policy to Helm chart #234

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20f9df0
Add pod security policy to Helm chart
stefanprodan Jul 5, 2019
f0add9a
Use a role binding for the PSP rbac
stefanprodan Jul 5, 2019
48fac4e
Disable privilege escalation
stefanprodan Jul 6, 2019
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1 change: 1 addition & 0 deletions charts/flagger/README.md
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Expand Up @@ -53,6 +53,7 @@ Parameter | Description | Default
`slack.channel` | Slack channel | None
`slack.user` | Slack username | `flagger`
`rbac.create` | if `true`, create and use RBAC resources | `true`
`rbac.pspEnabled` | If `true`, create and use a restricted pod security policy | `false`
`crd.create` | if `true`, create Flagger's CRDs | `true`
`resources.requests/cpu` | pod CPU request | `10m`
`resources.requests/memory` | pod memory request | `32Mi`
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66 changes: 66 additions & 0 deletions charts/flagger/templates/psp.yaml
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@@ -0,0 +1,66 @@
{{- if .Values.rbac.pspEnabled }}
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: {{ template "flagger.fullname" . }}
labels:
helm.sh/chart: {{ template "flagger.chart" . }}
app.kubernetes.io/name: {{ template "flagger.name" . }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
app.kubernetes.io/instance: {{ .Release.Name }}
annotations:
seccomp.security.alpha.kubernetes.io/allowedProfileNames: '*'
spec:
privileged: false
hostIPC: false
hostNetwork: false
hostPID: false
readOnlyRootFilesystem: false
allowPrivilegeEscalation: false
allowedCapabilities:
- '*'
fsGroup:
rule: RunAsAny
runAsUser:
rule: RunAsAny
seLinux:
rule: RunAsAny
supplementalGroups:
rule: RunAsAny
volumes:
- '*'
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: {{ template "flagger.fullname" . }}-psp
labels:
helm.sh/chart: {{ template "flagger.chart" . }}
app.kubernetes.io/name: {{ template "flagger.name" . }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
app.kubernetes.io/instance: {{ .Release.Name }}
rules:
- apiGroups: ['policy']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
- {{ template "flagger.fullname" . }}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: {{ template "flagger.fullname" . }}-psp
labels:
helm.sh/chart: {{ template "flagger.chart" . }}
app.kubernetes.io/name: {{ template "flagger.name" . }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
app.kubernetes.io/instance: {{ .Release.Name }}
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: {{ template "flagger.fullname" . }}-psp
subjects:
- kind: ServiceAccount
name: {{ template "flagger.serviceAccountName" . }}
namespace: {{ .Release.Namespace }}
{{- end }}
2 changes: 2 additions & 0 deletions charts/flagger/values.yaml
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Expand Up @@ -28,6 +28,8 @@ serviceAccount:
rbac:
# rbac.create: `true` if rbac resources should be created
create: true
# rbac.pspEnabled: `true` if PodSecurityPolicy resources should be created
pspEnabled: false

crd:
# crd.create: `true` if custom resource definitions should be created
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