Nodeplugin needs below cluster roles:
persistentvolumes: get
volumeattachments: list, get
These additional permissions are needed by the volume healer. Volume healer
aims at fixing the volume health issues at the very startup time of the
nodeplugin. As part of its operations, volume healer has to run through
the list of volume attachments and understand details about each
persistentvolume.
The later commits will use these additional cluster roles.
Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
The provisioner and node-plugin have the capability to connect to
Hashicorp Vault with a ServiceAccount from the Namespace where the PVC
is created. This requires permissions to read the contents of the
ServiceAccount from an other Namespace than where Ceph-CSI is deployed.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Tenants can have their own ConfigMap that contains connection parameters
to the Vault Service where the PV encyption keys are located. It is
possible for a Tenant to use a different Vault Service than the one
configured by the Storage Admin who deployed Ceph-CSI.
For this, the node-plugin needs to be able to read the ConfigMap from
the Tenants namespace.
See-also: docs/design/proposals/encryption-with-vault-tokens.md
Signed-off-by: Niels de Vos <ndevos@redhat.com>
In order to fetch the Kubernetes Secret with the Vault Token for a
Tenant, the ClusterRole needs to allow reading Secrets from all
Kubernetes Namespaces (each Tenant has their own Namespace).
Signed-off-by: Niels de Vos <ndevos@redhat.com>
The aggregate clusterrole were designed for the scenario where
the rules are not completely owned by one component.
the aggregate rules can be removed and simplify
certain issues around upgrades.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
There are currently unwanted RBAC permission
is given for ceph-csi, This PR reduces removes
such unwanted RBAC resources.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
Use Deployment with leader election instead of StatefulSet
Deployment behaves better when a node gets disconnected
from the rest of the cluster - new provisioner leader
is elected in ~15 seconds, while it may take up to
5 minutes for StatefulSet to start a new replica.
Refer: kubernetes-csi/external-provisioner@52d1fbc
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
The kubernetes manifests and Helm templates have been updated to use
aggregated ClusterRoles. The same change has been done in Rook as well.
Refer rook/rook#2634 and rook/rook#2975
Signed-off-by: Kaushal M <kshlmster@gmail.com>
Based on the review comments addressed the following,
- Moved away from having to update the pod with volumes
when a new Ceph cluster is added for provisioning via the
CSI driver
- The above now used k8s APIs to fetch secrets
- TBD: Need to add a watch mechanisim such that these
secrets can be cached and updated when changed
- Folded the Cephc configuration and ID/key config map
and secrets into a single secret
- Provided the ability to read the same config via mapped
or created files within the pod
Tests:
- Ran PV creation/deletion/attach/use using new scheme
StorageClass
- Ran PV creation/deletion/attach/use using older scheme
to ensure nothing is broken
- Did not execute snapshot related tests
Signed-off-by: ShyamsundarR <srangana@redhat.com>
