deploy: split out RBAC definitions
Splitting out the RBAC definitions into a separate file has the advantage that it can be used as-is without editing in other deployments. For example, the kubernetes-csi/docs example can use this rbac.yaml file instead of a local copy. While at it, the upstream external-provisioner RBAC file gets used, which fixes the too broad permissions for "endpoints".
This commit is contained in:
Patrick Ohly
2
deploy/kubernetes/README.md
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2
deploy/kubernetes/README.md
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rbac-external-provisioner.yaml was copied from https://github.com/kubernetes-csi/external-provisioner/blob/master/deploy/kubernetes/rbac.yaml
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and must be refreshed when updating the external-provisioner image in setup-csi-snapshotter.yaml
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90
deploy/kubernetes/rbac-external-provisioner.yaml
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90
deploy/kubernetes/rbac-external-provisioner.yaml
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# This YAML file contains all RBAC objects that are necessary to run external
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# CSI provisioner.
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#
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# In production, each CSI driver deployment has to be customized:
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# - to avoid conflicts, use non-default namespace and different names
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# for non-namespaced entities like the ClusterRole
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# - decide whether the deployment replicates the external CSI
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# provisioner, in which case leadership election must be enabled;
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# this influences the RBAC setup, see below
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: csi-provisioner
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# replace with non-default namespace name
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namespace: default
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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: external-provisioner-runner
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rules:
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- apiGroups: [""]
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resources: ["secrets"]
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verbs: ["get", "list"]
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- apiGroups: [""]
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resources: ["persistentvolumes"]
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verbs: ["get", "list", "watch", "create", "delete"]
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- apiGroups: [""]
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resources: ["persistentvolumeclaims"]
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verbs: ["get", "list", "watch", "update"]
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- apiGroups: ["storage.k8s.io"]
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resources: ["storageclasses"]
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verbs: ["get", "list", "watch"]
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- apiGroups: [""]
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resources: ["events"]
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verbs: ["list", "watch", "create", "update", "patch"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshots"]
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verbs: ["get", "list"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshotcontents"]
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verbs: ["get", "list"]
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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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name: csi-provisioner-role
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subjects:
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- kind: ServiceAccount
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name: csi-provisioner
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# replace with non-default namespace name
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namespace: default
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roleRef:
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kind: ClusterRole
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name: external-provisioner-runner
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apiGroup: rbac.authorization.k8s.io
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---
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# Provisioner must be able to work with endpoints in current namespace
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# if (and only if) leadership election is enabled
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kind: Role
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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# replace with non-default namespace name
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namespace: default
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name: external-provisioner-cfg
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rules:
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- apiGroups: [""]
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resources: ["endpoints"]
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verbs: ["get", "watch", "list", "delete", "update", "create"]
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---
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kind: RoleBinding
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: csi-provisioner-role-cfg
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# replace with non-default namespace name
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namespace: default
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subjects:
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- kind: ServiceAccount
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name: csi-provisioner
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# replace with non-default namespace name
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namespace: default
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roleRef:
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kind: Role
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name: external-provisioner-cfg
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apiGroup: rbac.authorization.k8s.io
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65
deploy/kubernetes/rbac.yaml
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65
deploy/kubernetes/rbac.yaml
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# Together with the RBAC file for external-provisioner, this YAML file
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# contains all RBAC objects that are necessary to run external CSI
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# snapshotter.
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#
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# In production, each CSI driver deployment has to be customized:
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# - to avoid conflicts, use non-default namespace and different names
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# for non-namespaced entities like the ClusterRole
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# - optionally rename the non-namespaced ClusterRole if there
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# are conflicts with other deployments
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: csi-snapshotter
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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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# rename if there are conflicts
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name: external-snapshotter-runner
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rules:
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- apiGroups: [""]
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resources: ["persistentvolumes"]
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verbs: ["get", "list", "watch", "create", "delete"]
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- apiGroups: [""]
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resources: ["persistentvolumeclaims"]
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verbs: ["get", "list", "watch", "update"]
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- apiGroups: ["storage.k8s.io"]
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resources: ["storageclasses"]
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verbs: ["get", "list", "watch"]
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- apiGroups: [""]
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resources: ["events"]
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verbs: ["list", "watch", "create", "update", "patch"]
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- apiGroups: [""]
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resources: ["secrets"]
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verbs: ["get", "list"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshotclasses"]
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verbs: ["get", "list", "watch"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshotcontents"]
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verbs: ["create", "get", "list", "watch", "update", "delete"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshots"]
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verbs: ["get", "list", "watch", "update"]
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- apiGroups: ["apiextensions.k8s.io"]
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resources: ["customresourcedefinitions"]
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verbs: ["create", "list", "watch", "delete"]
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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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name: csi-snapshotter-role
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subjects:
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- kind: ServiceAccount
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name: csi-snapshotter
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# replace with non-default namespace name
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namespace: default
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roleRef:
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kind: ClusterRole
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# change the name also here if the ClusterRole gets renamed
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name: external-snapshotter-runner
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apiGroup: rbac.authorization.k8s.io
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@@ -1,67 +1,44 @@
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# This YAML file contains all API objects that are necessary to run external
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# CSI snapshotter.
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# This YAML file shows how to deploy the CSI snapshotter together
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# with the hostpath CSI driver. It depends on the RBAC rules
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# from rbac.yaml and rbac-external-provisioner.yaml.
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#
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# In production, this needs to be in separate files, e.g. service account and
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# role and role binding needs to be created once, while stateful set may
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# require some tuning.
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#
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# In addition, hostpath CSI driver is hardcoded as the CSI driver.
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apiVersion: v1
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kind: ServiceAccount
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metadata:
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name: csi-snapshotter
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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: external-snapshotter-runner
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rules:
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- apiGroups: [""]
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resources: ["persistentvolumes"]
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verbs: ["get", "list", "watch", "create", "delete"]
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- apiGroups: [""]
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resources: ["persistentvolumeclaims"]
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verbs: ["get", "list", "watch", "update"]
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- apiGroups: ["storage.k8s.io"]
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resources: ["storageclasses"]
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verbs: ["get", "list", "watch"]
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- apiGroups: [""]
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resources: ["events"]
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verbs: ["list", "watch", "create", "update", "patch"]
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- apiGroups: [""]
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resources: ["endpoints"]
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verbs: ["list", "watch", "create", "update", "delete", "get"]
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- apiGroups: [""]
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resources: ["secrets"]
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verbs: ["get", "list"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshotclasses"]
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verbs: ["get", "list", "watch"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshotcontents"]
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verbs: ["create", "get", "list", "watch", "update", "delete"]
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- apiGroups: ["snapshot.storage.k8s.io"]
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resources: ["volumesnapshots"]
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verbs: ["get", "list", "watch", "update"]
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- apiGroups: ["apiextensions.k8s.io"]
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resources: ["customresourcedefinitions"]
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verbs: ["create", "list", "watch", "delete"]
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# Because external-snapshotter and external-provisioner get
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# deployed in the same pod, we have to merge the permissions
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# for the provisioner into the service account. This is not
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# necessary when deploying separately.
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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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name: csi-snapshotter-role
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name: csi-snapshotter-provisioner-role
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subjects:
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- kind: ServiceAccount
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name: csi-snapshotter
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name: csi-snapshotter # from rbac.yaml
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# replace with non-default namespace name
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namespace: default
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roleRef:
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kind: ClusterRole
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name: external-snapshotter-runner
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name: external-provisioner-runner # from rbac-external-provisioner.yaml
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apiGroup: rbac.authorization.k8s.io
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---
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kind: RoleBinding
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apiVersion: rbac.authorization.k8s.io/v1
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metadata:
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name: csi-snapshotter-provisioner-role-cfg
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# replace with non-default namespace name
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namespace: default
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subjects:
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- kind: ServiceAccount
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name: csi-snapshotter # from rbac.yaml
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# replace with non-default namespace name
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namespace: default
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roleRef:
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kind: Role
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name: external-provisioner-cfg # from rbac-external-provisioner.yaml
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apiGroup: rbac.authorization.k8s.io
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---
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kind: Service
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apiVersion: v1
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