All topology labels are optional. They are a way to describe a cluster layout using the properties of disks. The policy represents the confirmation that cluster data should be forcibly deleted. © Rook Authors 2020. In the CRD specification below three monitors are created each using a 10Gi PVC registered trademarks and uses trademarks. EOF, kubectl -n rook-ceph patch cephcluster rook-ceph --type merge -p '{"spec":{"cleanupPolicy":{"confirmation":"yes-really-destroy-data"}}}', dedicated metadata device for OSD on PVC section, priority class names configuration settings, example CRD configuration is provided below, Kubernetes Pod Quality of Service classes, Kubernetes - Managing Compute Resources for Containers, Latest stable release in this stable series (e.g., v14.2), A specific build (e.g., v14.2.5-20191203), Specify the storage class Rook should use to consume storage via PVCs, If you have a single Rook Ceph cluster, set the, If you have multiple Rook Ceph clusters in the same Kubernetes cluster, choose the same namespace to set. cephfilesystems.ceph.rook.io The Rook Ceph operator creates a Job called rook-ceph-detect-version to detect the full Ceph version used by the given cephVersion.image. Any changes to taints or affinities, intentional or unintentional, may affect the Manually creating PVs can be time consuming if a lot of them are required by pods, which is why it is interesting for the cluster to b… We are a Cloud Native Computing Foundation graduated project. If an admin wants to sync data from another cluster, the admin needs to pull a realm on a Rook Ceph cluster from another Rook Ceph (or Ceph… The policy represents the confirmation that cluster data should be forcibly deleted. This system user has the name “$REALM_NAME-system-user”. Trademark Usage page. The first zone group created in a realm is the master zone group. Deleting pools should be done with caution. The following are the settings for Storage Class Device Sets which can be configured to create OSDs that are backed by block mode PVs. metadata: created by Rook using the local-storage storage class. When the labels are found on a node at first OSD deployment, Rook will add them to “data”: represents the main OSD block device, where your data is being stored. with various properties can be specified to be data disks or wal/db disks. If an admin wants to sync data from another cluster, the admin needs to pull a realm on a Rook Ceph cluster from another Rook Ceph (or Ceph) cluster. registered trademarks and uses trademarks. radosgw-admin zone rm --rgw-realm=realm-a --rgw-zone-group=zone-group-a --rgw-zone=zone-a Then create a kubernetes secret on the pulling Rook Ceph cluster with the same secrets yaml file. To get these keys from the cluster the realm was originally created on, run: Edit the realm-a-keys.yaml file, and change the namespace with the namespace that the new Rook Ceph cluster exists in. This endpoint must also be resolvable from the new Rook Ceph cluster. © 2020 The Linux Foundation. Rook-Ceph will monitor the state of the CephCluster on various components by default. The cleanupPolicy should only be added to the cluster when the cluster is about to be deleted. The minimum supported Ceph version for the External Cluster is Luminous 12.2.x. kubectl delete storageclass rook-ceph-block To change the defaults that the operator uses to determine the mon health and whether to failover a mon, refer to the health settings. registered trademarks and uses trademarks. “metadata”: represents the metadata (including block.db and block.wal) device used to store the Ceph Bluestore database for an OSD. To maintain a balance between hands-off usability and data safety, To avoid With the present configuration, each OSD will have its main block allocated a 10GB device as well a 5GB device to act as a bluestore database. The example under ‘all’ would have all services scheduled on kubernetes nodes labeled with ‘role=storage-node’ and kubectl delete storageclass csi-cephfs, kubectl -n rook-ceph delete cephcluster rook-ceph, kubectl delete -f operator.yaml If the cluster CRD still exists even though you have executed the delete command earlier, see the next section on removing the finalizer. Removing object store(s) from the master zone of the master zone group should be done with caution. This field is optional. There are two scenarios possible when deleting a zone. Finally, you can simply execute the script like this from a machine that has access to your Kubernetes cluster: Assuming the above section has successfully completed, here is a CR example: Choose the namespace carefully, if you have an existing cluster managed by Rook, you have likely already injected common.yaml. For example, you could change the mgr probe by applying: Changing the liveness probe is an advanced operation and should rarely be necessary. Next example is where Mons and OSDs are backed by PVCs. Here is a complete example for both daemonHealth and livenessProbe: The probe itself can also be overridden, refer to the Kubernetes documentation. Finally, create a kubernetes secret on the pulling Rook Ceph cluster with the new secrets yaml file. The following table shows the minimum version of Ceph for some of the features: In order to configure an external Ceph cluster with Rook, we need to inject some information in order to connect to that cluster. OSDs created prior to Rook v0.9 or with older images of Luminous and Mimic are not created with ceph-volume and thus would not support the same features. © Rook Authors 2020. cephnfses.ceph.rook.io A “data” device, a “metadata” device and a “wal” device. If you want to change these settings, start with the probe spec Rook generates by default and then modify the desired settings. If you modified the demo settings, additional cleanup is up to you for devices, host paths, etc. All variables are key-value pairs represented as strings. The cleanupPolicy CR settings has different fields: To automate activation of the cleanup, you can use the following command. Without proper cleanup, pods consuming the storage will be hung indefinitely until a system reboot. But if the admin key is to be used by the external cluster, set the following variable: WARNING: If you plan to create CRs (pool, rgw, mds, nfs) in the external cluster, you MUST inject the client.admin keyring as well as injecting cluster-external-management.yaml. the operator is not running anymore), you can delete the finalizer manually with the following command: This command will patch the following CRDs on v1.3: Within a few seconds you should see that the cluster CRD has been deleted and will no longer block other cleanup such as deleting the rook-ceph namespace. It includes the following keys: mgr, mon, osd, cleanup, and all. Here are several samples for configuring Ceph clusters. This allows the ceph-object-store to replicate its data over multiple Ceph clusters. apiVersion: storage.k8s.io/v1 For more information on the multisite CRDs please read ceph-object-multisite-crd. -3 0.01358 host mynode This can be configured like so: Some modules will have special configuration to ensure the module is fully functional after being enabled. You can set annotations / labels for Rook components for the list of key value pairs: When other keys are set, all will be merged together with the specific component. Each of the samples must also include the namespace and corresponding access granted for management by the Ceph operator. to the Ceph cluster resource. The Linux Foundation has