Using Minikube with Pod Security Policies

Using Minikube with Pod Security Policies

Overview

This tutorial explains how to start minikube with Pod Security Policies (PSP) enabled.

Prerequisites

  • Minikube 1.5.2 with Kubernetes 1.16.x or higher

Tutorial

Before starting minikube, you need to give it the PSP YAMLs in order to allow minikube to bootstrap.

Create the directory:
mkdir -p ~/.minikube/files/etc/kubernetes/addons

Copy the YAML below into this file: ~/.minikube/files/etc/kubernetes/addons/psp.yaml

Now start minikube:
minikube start --extra-config=apiserver.enable-admission-plugins=PodSecurityPolicy

---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
  name: privileged
  annotations:
    seccomp.security.alpha.kubernetes.io/allowedProfileNames: "*"
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
spec:
  privileged: true
  allowPrivilegeEscalation: true
  allowedCapabilities:
  - "*"
  volumes:
  - "*"
  hostNetwork: true
  hostPorts:
  - min: 0
    max: 65535
  hostIPC: true
  hostPID: true
  runAsUser:
    rule: 'RunAsAny'
  seLinux:
    rule: 'RunAsAny'
  supplementalGroups:
    rule: 'RunAsAny'
  fsGroup:
    rule: 'RunAsAny'
---
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
  name: restricted
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
spec:
  privileged: false
  allowPrivilegeEscalation: false
  requiredDropCapabilities:
    - ALL
  volumes:
    - 'configMap'
    - 'emptyDir'
    - 'projected'
    - 'secret'
    - 'downwardAPI'
    - 'persistentVolumeClaim'
  hostNetwork: false
  hostIPC: false
  hostPID: false
  runAsUser:
    rule: 'MustRunAsNonRoot'
  seLinux:
    rule: 'RunAsAny'
  supplementalGroups:
    rule: 'MustRunAs'
    ranges:
      # Forbid adding the root group.
      - min: 1
        max: 65535
  fsGroup:
    rule: 'MustRunAs'
    ranges:
      # Forbid adding the root group.
      - min: 1
        max: 65535
  readOnlyRootFilesystem: false
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: psp:privileged
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
rules:
- apiGroups: ['policy']
  resources: ['podsecuritypolicies']
  verbs:     ['use']
  resourceNames:
  - privileged
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: psp:restricted
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
rules:
- apiGroups: ['policy']
  resources: ['podsecuritypolicies']
  verbs:     ['use']
  resourceNames:
  - restricted
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: default:restricted
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: psp:restricted
subjects:
- kind: Group
  name: system:authenticated
  apiGroup: rbac.authorization.k8s.io
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: default:privileged
  namespace: kube-system
  labels:
    addonmanager.kubernetes.io/mode: EnsureExists
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: psp:privileged
subjects:
- kind: Group
  name: system:masters
  apiGroup: rbac.authorization.k8s.io
- kind: Group
  name: system:nodes
  apiGroup: rbac.authorization.k8s.io
- kind: Group
  name: system:serviceaccounts:kube-system
  apiGroup: rbac.authorization.k8s.io
Last modified November 25, 2019: Create using_psp.md (c3c85dbd1)