...
By default, minikube will apply the following pod security policies, cluster roles and bindings:
| Code Block |
|---|
|
---
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
|
...
| Code Block |
|---|
|
vi dangerous-pod.yaml |
| Code Block |
|---|
|
apiVersion: apps/v1
kind: Deployment
metadata:
name: dangerous-deploy
labels:
app: dangerous-deploy
spec:
replicas: 1
selector:
matchLabels:
app: dangerous-deploy
template:
metadata:
labels:
app: dangerous-deploy
spec:
containers:
- name: alpine
image: alpine
stdin: true
tty: true
securityContext:
privileged: true
hostPID: true
hostNetwork: true
|
...
For fluent-bit, we are going to define a separate pod security policy and bind it to fluent-bit's service account.
| Code Block |
|---|
|
apiVersion: policy/v1beta1
kind: PodSecurityPolicy
metadata:
name: ncyd-fluent-bit-psp
annotations:
seccomp.security.alpha.kubernetes.io/allowedProfileNames: "*"
labels:
addonmanager.kubernetes.io/mode: EnsureExists
spec:
privileged: false
allowPrivilegeEscalation: false
requiredDropCapabilities:
- ALL
volumes:
- 'hostPath'
- 'configMap'
- 'emptyDir'
- 'projected'
- 'secret'
- 'downwardAPI'
- 'persistentVolumeClaim'
hostNetwork: false
hostIPC: false
hostPID: false
runAsUser:
rule: 'RunAsAny'
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: ncyd-fluent-bit
labels:
addonmanager.kubernetes.io/mode: EnsureExists
rules:
- apiGroups: ['policy']
resources: ['podsecuritypolicies']
verbs: ['use']
resourceNames:
- ncyd-fluent-bit-psp
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: ncyd-fluent-bit
subjects:
- kind: ServiceAccount
name: fluent-bit
namespace: default
roleRef:
kind: ClusterRole
name: ncyd-fluent-bit
apiGroup: rbac.authorization.k8s.io
|
...