Container Service for Kubernetes:Container security policy rule library

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKNoEnvVarSecrets
metadata:
  name: no-env-var-secrets
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces: ["test-gatekeeper"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: mypod
  namespace: test-gatekeeper
spec:
  containers:
  - name: mypod
    image: redis
    volumeMounts:
    - name: foo
      mountPath: "/etc/foo"
  volumes:
  - name: foo
    secret:
      secretName: mysecret
      items:
      - key: username
        path: my-group/my-username

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - name: mycontainer
    image: redis
    env:
      - name: SECRET_USERNAME
        valueFrom:
          secretKeyRef:
            name: mysecret
            key: username
      - name: SECRET_PASSWORD
        valueFrom:
          secretKeyRef:
            name: mysecret
            key: password
  restartPolicy: Never

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPodsRequireSecurityContext
metadata:
  name: pods-require-security-context
  annotations:
    description: "Requires that Pods must have a `securityContext` defined."
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces: ["test-gatekeeper"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: test
  namespace: test-gatekeeper
spec:
  securityContext:
    runAsNonRoot: false
  containers:
  - image: test
    name: test
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Never
status: {}

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: non-test-gatekeeper
spec:
  containers:
  - image: test
    name: test2
  - image: test
    name: test
    resources: {}
    securityContext:
      runAsNonRoot: false

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKRestrictNamespaces
metadata:
  name: restrict-default-namespace
  annotations:
    description: "Restricts resources from using the restricted namespace."
spec:
  match:
    kinds:
      - apiGroups: ['']
        kinds: ['Pod']
  parameters:
    restrictedNamespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: test
  namespace: non-test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Never
status: {}

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - name: mycontainer
    image: redis
  restartPolicy: Never

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKRestrictRoleBindings
metadata:
  name: restrict-clusteradmin-rolebindings
  annotations:
    description: "Restricts use of sensitive role in specific rolebinding."
spec:
  match:
    kinds:
      - apiGroups: ["rbac.authorization.k8s.io"]
        kinds: ["RoleBinding"]
  parameters:
    restrictedRole:
      apiGroup: "rbac.authorization.k8s.io"
      kind: "ClusterRole"
      name: "cluster-admin"
    allowedSubjects:
      - apiGroup: "rbac.authorization.k8s.io"
        kind: "Group"
        name: "system:masters"

Allowed:

kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: good-2
  namespace: test-gatekeeper
subjects:
  - kind: Group
    name: 'system:masters'
roleRef:
  kind: ClusterRole
  name: cluster-admin
  apiGroup: rbac.authorization.k8s.io

Disallowed:

kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: bad-1
  namespace: test-gatekeeper
subjects:
  - kind: ServiceAccount
    name: policy-template-controller
roleRef:
  kind: ClusterRole
  name: cluster-admin
  apiGroup: rbac.authorization.k8s.io

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKBlockProcessNamespaceSharing
metadata:
  name: block-share-process-namespace
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces: ["test-gatekeeper"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: test-3
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Never
status: {}

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  shareProcessNamespace: true
  containers:
  - image: test
    name: test
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Never
status: {}

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKEmptyDirHasSizeLimit
metadata:
  name: empty-dir-has-sizelimit
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces: ["test-gatekeeper"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: test-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
  volumes:
  - name: cache-volume
    emptyDir:
      sizeLimit: "10Mi"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
  volumes:
  - name: cache-volume
    emptyDir: {}

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKLocalStorageRequireSafeToEvict
metadata:
  name: local-storage-require-safe-to-evict
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces: ["test-gatekeeper"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: test-1
  namespace: test-gatekeeper
  annotations:
    'cluster-autoscaler.kubernetes.io/safe-to-evict': 'true'
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    volumeMounts:
    - mountPath: /test-pd
      name: test-volume
  volumes:
  - name: test-volume
    hostPath:
      # directory location on host
      path: /data
      # this field is optional
      type: Directory

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    volumeMounts:
    - mountPath: /cache
      name: cache-volume
  volumes:
  - name: cache-volume
    emptyDir: {}

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKOSSStorageLocationConstraint
metadata:
  name: restrict-oss-location
  annotations:
    description: "Restricts location of oss storage in cluster."
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["PersistentVolume", "Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    mode: "allowlist"
    regions:
      - "cn-beijing"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-oss-csi-good
  namespace: test-gatekeeper
spec:
  containers:
    - name: test
      image: test
  volumes:
    - name: test
      csi:
        driver: ossplugin.csi.alibabacloud.com
        volumeAttributes:
          bucket: "oss"
          url: "oss-cn-beijing.aliyuncs.com"
          otherOpts: "-o max_stat_cache_size=0 -o allow_other"
          path: "/"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-oss-csi
  namespace: test-gatekeeper
spec:
  containers:
    - name: test
      image: test
  volumes:
    - name: test
      csi:
        driver: ossplugin.csi.alibabacloud.com
        volumeHandle: pv-oss
        nodePublishSecretRef:
          name: oss-secret
          namespace: default
        volumeAttributes:
          bucket: "oss"
          url: "oss-cn-hangzhou.aliyuncs.com"
          otherOpts: "-o max_stat_cache_size=0 -o allow_other"
          path: "/"

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKAllowedRepos
metadata:
  name: allowed-repos
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    repos:
      - "registry-vpc.cn-hangzhou.aliyuncs.com/acs/"
      - "registry.cn-hangzhou.aliyuncs.com/acs/"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-01
  namespace: test-gatekeeper
spec:
  containers:
  - image: registry.cn-hangzhou.aliyuncs.com/acs/test-webserver
    name: test-container-1
  initContainers:
  - image: registry.cn-hangzhou.aliyuncs.com/acs/test-webserver
    name: test-container

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
  initContainers:
  - image: k8s.gcr.io/test-webserver
    name: test-container-3

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKBlockAutoinjectServiceEnv
metadata:
  name: block-auto-inject-service-env
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-0
  namespace: test-gatekeeper
spec:
  enableServiceLinks: false
  containers:
  - image: openpolicyagent/test-webserver:1.0
    name: test-container

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKBlockAutomountToken
metadata:
  name: block-auto-mount-service-account-token
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-0
  namespace: test-gatekeeper
spec:
  automountServiceAccountToken: false
  containers:
  - image: openpolicyagent/test-webserver:v1.0
    name: test-container

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKBlockEphemeralContainer
metadata:
  name: block-ephemeral-container
spec:
  enforcementAction: deny
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: good-1
  namespace: test-gatekeeper
spec:
  containers:
  - name: mycontainer
    image: redis

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad-1
  namespace: non-test-gatekeeper
spec:
  containers:
  - name: mycontainer
    image: redis
  ephemeralContainers:
    - name: test
      image: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKBlockLoadBalancer
metadata:
  name: block-load-balancer
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Service"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Service
metadata:
  name: my-service-1
  namespace: test-gatekeeper
spec:
  selector:
    app: MyApp
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 9376

Disallowed:

apiVersion: v1
kind: Service
metadata:
  name: my-service
  namespace: test-gatekeeper
spec:
  type: LoadBalancer
  selector:
    app: MyApp
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 9376

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKBlockNodePort
metadata:
  name: block-node-port
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Service"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Service
metadata:
  name: my-service-1
  namespace: test-gatekeeper
spec:
  selector:
    app: MyApp
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 9376

Disallowed:

apiVersion: v1
kind: Service
metadata:
  name: my-service
  namespace: test-gatekeeper
spec:
  type: NodePort
  selector:
    app: MyApp
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 9376

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKContainerLimits
metadata:
  name: container-must-have-limits
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    cpu: "1000m"
    memory: "1Gi"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: openpolicyagent/test-webserver
    name: test-container
    resources:
      limits:
        memory: "100Mi"
        cpu: "500m"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-2
  namespace: non-test-gatekeeper
spec:
  containers:
  - image: openpolicyagent/test-webserver
    name: test-container
    resources:
      limits:
        memory: "100Gi"
        cpu: "2000m"

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKExternalIPs
metadata:
  name: external-ips
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Service"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedIPs:
      - "192.168.0.5"

Allowed:

apiVersion: v1
kind: Service
metadata:
  name: my-service-3
  namespace: test-gatekeeper
spec:
  selector:
    app: MyApp
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 9376

Disallowed:

apiVersion: v1
kind: Service
metadata:
  name: my-service
  namespace: test-gatekeeper
spec:
  selector:
    app: MyApp
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 9376
  externalIPs:
    - 80.11.XX.XX

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKImageDigests
metadata:
  name: container-image-must-have-digest
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pod-0
  namespace: test-gatekeeper
spec:
  containers:
  - image: openpolicyagent/test-webserver@sha256:12e469267d21d66ac9dcae33a4d3d202ccb2591869270b95d0aad7516c7d075b
    name: test-container

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
  initContainers:
  - image: k8s.gcr.io/test-webserver
    name: test-container2

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKRequiredLabels
metadata:
  name: must-have-label-test
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    labels:
      - key: test
        allowedRegex: "^test.*$"
      - key: env
        allowedRegex: "^(dev|prod)$"
        optional: true

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  name: test
  namespace: test-gatekeeper
  labels:
    'test': 'test_233'
spec:
  containers:
  - name: mycontainer
    image: redis

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  name: bad2
  namespace: test-gatekeeper
  labels:
    'test': '233'
    'env': 'invalid'
spec:
  containers:
  - name: mycontainer
    image: redis

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKRequiredProbes
metadata:
  name: must-have-probes
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    probes: ["readinessProbe", "livenessProbe"]
    probeTypes: ["tcpSocket", "httpGet", "exec"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: p4
  namespace: test-gatekeeper
spec:
  containers:
  - name: liveness
    image: k8s.gcr.io/busybox
    readinessProbe:
      exec:
        command:
          - cat
          - /tmp/healthy
      initialDelaySeconds: 5
      periodSeconds: 5
    livenessProbe:
      exec:
        command:
          - cat
          - /tmp/healthy
      initialDelaySeconds: 5
      periodSeconds: 5

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: p1
  namespace: test-gatekeeper
spec:
  containers:
  - name: liveness
    image: k8s.gcr.io/busybox

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKCheckNginxPath
metadata:
  name: block-nginx-path
spec:
  enforcementAction: deny
  match:
    kinds:
      - apiGroups: ["extensions", "networking.k8s.io"]
        kinds: ["Ingress"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: good-paths
  namespace: test-gatekeeper
spec:
  rules:
    - host: cafe.example.com
      http:
        paths:
          - path: /tea
            pathType: Prefix
            backend:
              service:
                name: tea-svc
                port:
                  number: 80
          - path: /coffee
            pathType: Prefix
            backend:
              service:
                name: coffee-svc
                port:
                  number: 80

Disallowed:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: bad-path-secrets
  namespace: test-gatekeeper
spec:
  rules:
    - host: cafe.example.com
      http:
        paths:
          - path: /var/run/secrets
            pathType: Prefix
            backend:
              service:
                name: tea-svc
                port:
                  number: 80

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKCheckNginxAnnotation
metadata:
  name: block-nginx-annotation
spec:
  match:
    kinds:
      - apiGroups: ["extensions", "networking.k8s.io"]
        kinds: ["Ingress"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: good-annotations
  namespace: test-gatekeeper
  annotations:
    nginx.org/good: "value"
spec:
  rules:
    - host: cafe.example.com
      http:
        paths:
          - path: /tea
            pathType: Prefix
            backend:
              service:
                name: tea-svc
                port:
                  number: 80
          - path: /coffee
            pathType: Prefix
            backend:
              service:
                name: coffee-svc
                port:
                  number: 80

Disallowed:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: var-run-secrets
  namespace: test-gatekeeper
  annotations:
    nginx.org/bad: "/var/run/secrets"
spec:
  rules:
    - host: cafe.example.com
      http:
        paths:
          - path: /tea
            pathType: Prefix
            backend:
              service:
                name: tea-svc
                port:
                  number: 80
          - path: /coffee
            pathType: Prefix
            backend:
              service:
                name: coffee-svc
                port:
                  number: 80

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPAllowedUsers
metadata:
  name: psp-pods-allowed-user-ranges
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    runAsUser:
      rule: MustRunAs # MustRunAsNonRoot # RunAsAny
      ranges:
        - min: 100
          max: 200
    runAsGroup:
      rule: MustRunAs # MayRunAs # RunAsAny
      ranges:
        - min: 100
          max: 200
    supplementalGroups:
      rule: MustRunAs # MayRunAs # RunAsAny
      ranges:
        - min: 100
          max: 200
    fsGroup:
      rule: MustRunAs # MayRunAs # RunAsAny
      ranges:
        - min: 100
          max: 200

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good2
  namespace: test-gatekeeper
spec:
  securityContext:
    fsGroup: 150
    supplementalGroups:
      - 150
  containers:
  - image: test
    name: test
    securityContext:
      runAsUser: 150
      runAsGroup: 150

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPAllowPrivilegeEscalationContainer
metadata:
  name: psp-allow-privilege-escalation-container
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      allowPrivilegeEscalation: false
  initContainers:
    - image: test
      name: test2
      securityContext:
        allowPrivilegeEscalation: false

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPAppArmor
metadata:
  name: psp-apparmor
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedProfiles:
      - runtime/default

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good
  namespace: test-gatekeeper
  annotations:
    'container.apparmor.security.beta.kubernetes.io/test': 'runtime/default'
    'container.apparmor.security.beta.kubernetes.io/test2': 'runtime/default'
spec:
  containers:
  - image: test
    name: test
  initContainers:
  - image: test
    name: test2

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPCapabilities
metadata:
  name: psp-capabilities
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedCapabilities: ["CHOWN"]
    requiredDropCapabilities: ["NET_ADMIN", "SYS_ADMIN", "NET_RAW"]

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good-4
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      capabilities:
        add:
          - CHOWN
        drop:
         - "NET_ADMIN"
         - "SYS_ADMIN"
         - "NET_RAW"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPFlexVolumes
metadata:
  name: psp-flexvolume-drivers
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod", "PersistentVolume"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedFlexVolumes: #[]
      - driver: "alicloud/disk"
      - driver: "alicloud/nas"
      - driver: "alicloud/oss"
      - driver: "alicloud/cpfs"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pv-nas
  namespace: test-gatekeeper
spec:
  containers:
    - name: test
      image: test
  volumes:
    - name: test
      flexVolume:
        driver: "alicloud/nas"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: pv-oss-flexvolume
  namespace: test-gatekeeper
spec:
  containers:
    - name: test
      image: test
  volumes:
    - name: test
      flexVolume:
        driver: "alicloud/ossxx"

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPForbiddenSysctls
metadata:
  name: psp-forbidden-sysctls
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    forbiddenSysctls:
      # - "*" # * may be used to forbid all sysctls
      - "kernel.*"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good-2
  namespace: test-gatekeeper
spec:
  securityContext:
    sysctls:
      - name: 'net.ipv4.tcp_syncookies'
        value: "65536"
  containers:
  - image: test
    name: test

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad-1
  namespace: test-gatekeeper
spec:
  securityContext:
    sysctls:
      - name: 'kernel.shm_rmid_forced'
        value: '1024'
  containers:
  - image: test
    name: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPFSGroup
metadata:
  name: psp-fsgroup
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    rule: "MayRunAs" #"MustRunAs" #"MayRunAs", "RunAsAny"
    ranges:
      - min: 1
        max: 1000

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good
  namespace: test-gatekeeper
spec:
  securityContext:
    fsGroup: 100
  containers:
  - image: test
    name: test

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad-1
  namespace: non-test-gatekeeper
spec:
  securityContext:
    fsGroup: 0
  shareProcessNamespace: true
  containers:
  - image: test
    name: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPHostFilesystem
metadata:
  name: psp-host-filesystem
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedHostPaths:
      - readOnly: true
        pathPrefix: "/foo"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good1
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    volumeMounts:
      - name: test-volume
        mountPath: "/projected-volume"
        readOnly: true
  volumes:
  - name: test-volume
    hostPath:
      path: /foo

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
  volumes:
  - name: test-volume
    hostPath:
      path: /data
      type: File

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPHostNamespace
metadata:
  name: psp-host-namespace
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Never
status: {}

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  hostPID: true
  containers:
  - image: test
    name: test
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Never
status: {}

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPHostNetworkingPorts
metadata:
  name: psp-host-network-ports
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    hostNetwork: true
    min: 80
    max: 9000

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: good-2
  namespace: test-gatekeeper
spec:
  hostNetwork: true
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    ports:
      - hostPort: 80
        containerPort: 80
  initContainers:
    - image: k8s.gcr.io/test-webserver
      name: test-container2
      ports:
        - hostPort: 8080
          containerPort: 8080

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  name: bad-1
  namespace: non-test-gatekeeper
spec:
  hostNetwork: true
  containers:
  - image: k8s.gcr.io/test-webserver
    name: test-container
    ports:
      - hostPort: 22
        containerPort: 22

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPPrivilegedContainer
metadata:
  name: psp-privileged-container
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good1
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      privileged: true
  dnsPolicy: ClusterFirst
  restartPolicy: Never

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPProcMount
metadata:
  name: psp-proc-mount
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    procMount: Default  # Default or Unmasked

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good1
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      procMount: "Default"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad3
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      procMount: "Unmasked"
  initContainers:
  - image: test
    name: test2

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPReadOnlyRootFilesystem
metadata:
  name: psp-readonlyrootfilesystem
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good1
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      readOnlyRootFilesystem: true

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad2
  namespace: non-test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      readOnlyRootFilesystem: false
  initContainers:
  - image: test
    name: test2

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPSeccomp
metadata:
  name: psp-seccomp
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedProfileTypes:
      # - Unconfined
      - RuntimeDefault
      - Localhost
    allowedProfiles:
      - runtime/default
      - docker/default
      - localhost/profiles/audit.json

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      seccompProfile:
        type: Localhost
        localhostProfile: profiles/audit.json
  initContainers:
  - image: test
    name: test2
    securityContext:
      seccompProfile:
        type: Localhost
        localhostProfile: profiles/audit.json

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
    echo-k8s-webhook-enabled: 'true'
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPSELinuxV2
metadata:
  name: psp-selinux-v2
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    allowedSELinuxOptions:
      - level: s0:c123,c456
        role: object_r
        type: svirt_sandbox_file_t
        user: system_u

Allowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: good
  namespace: test-gatekeeper
spec:
  securityContext:
    seLinuxOptions:
      level: "s0:c123,c456"
  containers:
  - image: test
    name: test

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
    securityContext:
      seLinuxOptions:
        level: "s0:c123,c455"

Parameters:

Constraint:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ACKPSPVolumeTypes
metadata:
  name: psp-volume-types
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
    namespaces:
      - "test-gatekeeper"
  parameters:
    volumes:
      # - "*" # * may be used to allow all volume types
      - configMap
      # - emptyDir
      - projected
      - secret
      - downwardAPI
      - persistentVolumeClaim
      # - hostPath #required for allowedHostPaths
      - flexVolume #required for allowedFlexVolumes

Allowed:

apiVersion: v1
kind: Pod
metadata:
  name: pv-oss
  namespace: test-gatekeeper
spec:
  containers:
    - name: test
      image: test
  volumes:
    - name: test
      flexVolume:
        driver: "alicloud/oss"

Disallowed:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: test
  name: bad-1
  namespace: test-gatekeeper
spec:
  containers:
  - image: test
    name: test
  volumes:
  - name: test-volume
    hostPath:
      path: /data