Deploying OpenShift Data Foundation in external mode Red Hat OpenShift Data Foundation 4.17 Instructions for deploying OpenShift Data Foundation to use an external Red Hat Ceph Storage cluster and IBM FlashSystem. Red Hat Storage Documentation Team Abstract Read this document for instructions on installing Red Hat OpenShift Data Foundation to use an external Red Hat Ceph Storage cluster or IBM FlashSystem. Making open source more inclusive Red Hat is committed to replacing problematic language in our code, documentation, and web properties. We are beginning with these four terms: master, slave, blacklist, and whitelist. Because of the enormity of this endeavor, these changes will be implemented gradually over several upcoming releases. For more details, see our CTO Chris Wright's message . Providing feedback on Red Hat documentation We appreciate your input on our documentation. Do let us know how we can make it better. To give feedback, create a Bugzilla ticket: Go to the Bugzilla website. In the Component section, choose documentation . Fill in the Description field with your suggestion for improvement. Include a link to the relevant part(s) of documentation. Click Submit Bug . Chapter 1. Overview of deploying in external mode Red Hat OpenShift Data Foundation can make services from an external Red Hat Ceph Storage cluster available for consumption through OpenShift Container Platform clusters running on any platform. See Planning your deployment for more information. For instructions regarding how to install a RHCS cluster, see the installation guide . Follow these steps to deploy OpenShift Data Foundation in external mode: Deploy OpenShift Data Foundation using Red Hat Ceph Storage . Deploy OpenShift Data Foundation using IBM FlashSystem . 1.1. Disaster recovery requirements Disaster Recovery features supported by Red Hat OpenShift Data Foundation require all of the following prerequisites to successfully implement a disaster recovery solution: A valid Red Hat OpenShift Data Foundation Advanced subscription A valid Red Hat Advanced Cluster Management for Kubernetes subscription For more information, see the knowledgebase article on OpenShift Data Foundation subscriptions . For detailed disaster recovery solution requirements, see Configuring OpenShift Data Foundation Disaster Recovery for OpenShift Workloads guide, and Requirements and recommendations section of the Install guide in Red Hat Advanced Cluster Management for Kubernetes documentation. 1.2. Network ports required between OpenShift Container Platform and Ceph when using external mode deployment List of TCP ports, source OpenShift Container Platform and destination RHCS TCP ports To be used for 6789, 3300 Ceph Monitor 6800 - 7300 Ceph OSD, MGR, MDS 9283 Ceph MGR Prometheus Exporter For more information about why these ports are required, see Chapter 2. Ceph network configuration of RHCS Configuration Guide . Chapter 2. Deploy OpenShift Data Foundation using Red Hat Ceph storage Red Hat OpenShift Data Foundation can make services from an external Red Hat Ceph Storage cluster available for consumption through OpenShift Container Platform clusters. You need to install the OpenShift Data Foundation operator and then create an OpenShift Data Foundation cluster for the external Ceph storage system. 2.1. Installing Red Hat OpenShift Data Foundation Operator You can install Red Hat OpenShift Data Foundation Operator using the Red Hat OpenShift Container Platform Operator Hub. Prerequisites Access to an OpenShift Container Platform cluster using an account with cluster-admin and operator installation permissions. For additional resource requirements, see the Planning your deployment guide. Important When you need to override the cluster-wide default node selector for OpenShift Data Foundation, you can use the following command to specify a blank node selector for the openshift-storage namespace (create openshift-storage namespace in this case): Procedure Log in to the OpenShift Web Console. Click Operators -> OperatorHub . Scroll or type OpenShift Data Foundation into the Filter by keyword box to find the OpenShift Data Foundation Operator. Click Install . Set the following options on the Install Operator page: Update Channel as stable-4.17 . Installation Mode as A specific namespace on the cluster . Installed Namespace as Operator recommended namespace openshift-storage . If Namespace openshift-storage does not exist, it is created during the operator installation. Select Approval Strategy as Automatic or Manual . If you select Automatic updates, then the Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without any intervention. If you select Manual updates, then the OLM creates an update request. As a cluster administrator, you must then manually approve that update request to update the Operator to a newer version. Ensure that the Enable option is selected for the Console plugin . Click Install . Verification steps After the operator is successfully installed, a pop-up with a message, Web console update is available appears on the user interface. Click Refresh web console from this pop-up for the console changes to reflect. In the Web Console: Navigate to Installed Operators and verify that the OpenShift Data Foundation Operator shows a green tick indicating successful installation. Navigate to Storage and verify if the Data Foundation dashboard is available. 2.2. Creating an OpenShift Data Foundation Cluster for external Ceph storage system You need to create a new OpenShift Data Foundation cluster after you install OpenShift Data Foundation operator on OpenShift Container Platform deployed on VMware vSphere or user-provisioned bare metal infrastructures. Prerequisites A valid Red Hat OpenShift Data Foundation Advanced subscription. To know how subscriptions for OpenShift Data Foundation work, see knowledgebase article on OpenShift Data Foundation subscriptions . Ensure the OpenShift Container Platform version is 4.17 or above before deploying OpenShift Data Foundation 4.17. OpenShift Data Foundation operator must be installed. For more information, see Installing OpenShift Data Foundation Operator using the Operator Hub . To check the supportability and interoperability of Red Hat Ceph Storage (RHCS) with Red Hat OpenShift Data Foundation in external mode, go to the lab Red Hat OpenShift Data Foundation Supportability and Interoperability Checker . Select Service Type as ODF as Self-Managed Service . Select appropriate Version from the drop down. On the Versions tab, click the Supported RHCS versions in the External Mode tab. Red Hat Ceph Storage must have Ceph Dashboard installed and configured. For more information, see Ceph Dashboard installation and access . It is recommended that the external Red Hat Ceph Storage cluster has the PG Autoscaler enabled. For more information, see The placement group autoscaler section in the Red Hat Ceph Storage documentation. Procedure Click Operators -> Installed Operators to view all the installed operators. Ensure that the Project selected is openshift-storage . Click OpenShift Data Foundation and then click Create StorageSystem . In the Backing storage page, select the following options: Select Full deployment for the Deployment type option. Select Connect an external storage platform from the available options. Select Red Hat Ceph Storage for Storage platform . Click . In the Connection details page, provide the necessary information: Click on the Download Script link to download the python script for extracting Ceph cluster details. For extracting the Red Hat Ceph Storage (RHCS) cluster details, contact the RHCS administrator to run the downloaded python script on a Red Hat Ceph Storage node with the admin key . Run the following command on the RHCS node to view the list of available arguments: Important Use python instead of python3 if the Red Hat Ceph Storage 4.x cluster is deployed on Red Hat Enterprise Linux 7.x (RHEL 7.x) cluster. You can also run the script from inside a MON container (containerized deployment) or from a MON node (RPM deployment). Note Use the yum install cephadm command and then the cephadm command to deploy your RHCS cluster using containers. You must pull the RHCS container images using the cephadm command, rather than using yum for installing the Ceph packages onto nodes. For more information, see RHCS product documentation . To retrieve the external cluster details from the RHCS cluster, use one of the following options: Use config-file flag. This stores the parameters used during deployment. In new deployments, you can save the parameters used during deployment in a configuration file. This file can then be used during upgrade to preserve the parameters as well as adding any additional parameters. Use config-file to set the path to the configuration file. Example configuration file saved in /config.ini : Set the path to the config.ini file using config-file : Retrieve the external cluster details from the RHCS cluster, and pass the parameters for your deployment. For example: RBD parameters rbd-data-pool-name A mandatory parameter that is used for providing block storage in OpenShift Data Foundation. rbd-metadata-ec-pool-name (Optional) The name of the erasure coded RBD metadata pool. RGW parameters rgw-endpoint (Optional) This parameter is required only if the object storage is to be provisioned through Ceph Rados Gateway for OpenShift Data Foundation. Provide the endpoint in the following format: <ip_address>:<port> Note A fully-qualified domain name (FQDN) is also supported in the format <FQDN>:<PORT> . rgw-pool-prefix (Optional) The prefix of the RGW pools. If not specified, the default prefix is default . rgw-tls-cert-path (Optional) The file path of the RADOS Gateway endpoint TLS certificate. To provide the TLS certificate and RGW endpoint details to the helper script, ceph-external-cluster-details-exporter.py , run the following command: This creates a resource to create a Ceph Object Store CR such as Kubernetes secret containing the TLS certificate. All the intermediate certificates including private keys need to be stored in the certificate file. rgw-skip-tls (Optional) This parameter ignores the TLS certification validation when a self-signed certificate is provided (not recommended). Monitoring parameters monitoring-endpoint (Optional) This parameter accepts comma-separated list of IP addresses of active and standby mgrs reachable from the OpenShift Container Platform cluster. If not provided, the value is automatically populated. monitoring-endpoint-port (Optional) It is the port associated with the ceph-mgr Prometheus exporter specified by --monitoring-endpoint . If not provided, the value is automatically populated. Ceph parameters ceph-conf (Optional) The name of the Ceph configuration file. run-as-user (Optional) This parameter is used for providing name for the Ceph user which is created by the script. If this parameter is not specified, a default user name client.healthchecker is created. The permissions for the new user is set as: caps: [mgr] allow command config caps: [mon] allow r, allow command quorum_status, allow command version caps: [osd] allow rwx pool= RGW_POOL_PREFIX.rgw.meta , allow r pool= .rgw.root , allow rw pool= RGW_POOL_PREFIX.rgw.control , allow rx pool= RGW_POOL_PREFIX.rgw.log , allow x pool= RGW_POOL_PREFIX.rgw.buckets.index CephFS parameters cephfs-metadata-pool-name (Optional) The name of the CephFS metadata pool. cephfs-data-pool-name (Optional) The name of the CephFS data pool. cephfs-filesystem-name (Optional) The name of the CephFS filesystem. Output parameters dry-run (Optional) This parameter helps to print the executed commands without running them. output (Optional) The file where the output is required to be stored. Multicluster parameters cluster-name (Optional) The Ceph cluster name. restricted-auth-permission (Optional) This parameter restricts cephCSIKeyrings auth permissions to specific pools and clusters. Mandatory flags that need to be set with this are rbd-data-pool-name and cluster-name . You can also pass the cephfs-filesystem-name flag if there is CephFS user restriction so that permission is restricted to a particular CephFS filesystem. Note This parameter must be applied only for the new deployments. To restrict csi-users per pool and per cluster, you need to create new csi-users and new secrets for those csi-users . Example with restricted auth permission: Example of JSON output generated using the python script: Save the JSON output to a file with .json extension Note For OpenShift Data Foundation to work seamlessly, ensure that the parameters (RGW endpoint, CephFS details, RBD pool, and so on) to be uploaded using the JSON file remain unchanged on the RHCS external cluster after the storage cluster creation. Run the command when there is a multi-tenant deployment in which the RHCS cluster is already connected to OpenShift Data Foundation deployment with a lower version. Click Browse to select and upload the JSON file. The content of the JSON file is populated and displayed in the text box. Click The button is enabled only after you upload the .json file. In the Review and create page, review if all the details are correct: To modify any configuration settings, click Back to go back to the configuration page. Click Create StorageSystem . Verification steps To verify the final Status of the installed storage cluster: In the OpenShift Web Console, navigate to Installed Operators -> OpenShift Data Foundation -> Storage System -> ocs-external-storagecluster-storagesystem -> Resources . Verify that Status of StorageCluster is Ready and has a green tick. To verify that OpenShift Data Foundation, pods and StorageClass are successfully installed, see Verifying your external mode OpenShift Data Foundation installation for external Ceph storage system . 2.3. Verifying your OpenShift Data Foundation installation for external Ceph storage system Use this section to verify that OpenShift Data Foundation is deployed correctly. 2.3.1. Verifying the state of the pods Click Workloads -> Pods from the left pane of the OpenShift Web Console. Select openshift-storage from the Project drop-down list. Note If the Show default projects option is disabled, use the toggle button to list all the default projects. For more information on the expected number of pods for each component and how it varies depending on the number of nodes, see Table 2.1, "Pods corresponding to OpenShift Data Foundation components" Verify that the following pods are in running state: Table 2.1. Pods corresponding to OpenShift Data Foundation components Component Corresponding pods OpenShift Data Foundation Operator ocs-operator-* (1 pod on any worker node) ocs-metrics-exporter-* (1 pod on any worker node) odf-operator-controller-manager-* (1 pod on any worker node) odf-console-* (1 pod on any worker node) csi-addons-controller-manager-* (1 pod on any worker node) Rook-ceph Operator rook-ceph-operator-* (1 pod on any worker node) Multicloud Object Gateway noobaa-operator-* (1 pod on any worker node) noobaa-core-* (1 pod on any worker node) noobaa-db-pg-* (1 pod on any worker node) noobaa-endpoint-* (1 pod on any worker node) CSI cephfs csi-cephfsplugin-* (1 pod on each worker node) csi-cephfsplugin-provisioner-* (2 pods distributed across worker nodes) Note If an MDS is not deployed in the external cluster, the csi-cephfsplugin pods will not be created. rbd csi-rbdplugin-* (1 pod on each worker node) csi-rbdplugin-provisioner-* (2 pods distributed across worker nodes) 2.3.2. Verifying that the OpenShift Data Foundation cluster is healthy In the OpenShift Web Console, click Storage -> Data Foundation . In the Status card of the Overview tab, click Storage System and then click the storage system link from the pop up that appears. In the Status card of the Block and File tab, verify that the Storage Cluster has a green tick. In the Details card, verify that the cluster information is displayed. For more information on the health of OpenShift Data Foundation cluster using the Block and File dashboard, see Monitoring OpenShift Data Foundation . 2.3.3. Verifying that the Multicloud Object Gateway is healthy In the OpenShift Web Console, click Storage -> Data Foundation . In the Status card of the Overview tab, click Storage System and then click the storage system link from the pop up that appears. In the Status card of the Object tab, verify that both Object Service and Data Resiliency have a green tick. In the Details card, verify that the Multicloud Object Gateway (MCG) information is displayed. Note The RADOS Object Gateway is only listed in case RADOS Object Gateway endpoint details are included while deploying OpenShift Data Foundation in external mode. For more information on the health of OpenShift Data Foundation cluster using the object dashboard, see Monitoring OpenShift Data Foundation . 2.3.4. Verifying that the storage classes are created and listed Click Storage -> Storage Classes from the left pane of the OpenShift Web Console. Verify that the following storage classes are created with the OpenShift Data Foundation cluster creation: ocs-external-storagecluster-ceph-rbd ocs-external-storagecluster-ceph-rgw ocs-external-storagecluster-cephfs openshift-storage.noobaa.io Note If an MDS is not deployed in the external cluster, ocs-external-storagecluster-cephfs storage class will not be created. If RGW is not deployed in the external cluster, the ocs-external-storagecluster-ceph-rgw storage class will not be created. For more information regarding MDS and RGW, see Red Hat Ceph Storage documentation 2.3.5. Verifying that Ceph cluster is connected Run the following command to verify if the OpenShift Data Foundation cluster is connected to the external Red Hat Ceph Storage cluster. 2.3.6. Verifying that storage cluster is ready Run the following command to verify if the storage cluster is ready and the External option is set to true . 2.3.7. Verifying the the creation of Ceph Object Store CRD Run the following command to verify if the Ceph Object Store CRD is created in the external Red Hat Ceph Storage cluster. Chapter 3. Deploy OpenShift Data Foundation using IBM FlashSystem OpenShift Data Foundation can use IBM FlashSystem storage available for consumption through OpenShift Container Platform clusters. You need to install the OpenShift Data Foundation operator and then create an OpenShift Data Foundation cluster for IBM FlashSystem storage. 3.1. Installing Red Hat OpenShift Data Foundation Operator You can install Red Hat OpenShift Data Foundation Operator using the Red Hat OpenShift Container Platform Operator Hub. Prerequisites Access to an OpenShift Container Platform cluster using an account with cluster-admin and operator installation permissions. For additional resource requirements, see the Planning your deployment guide. Important When you need to override the cluster-wide default node selector for OpenShift Data Foundation, you can use the following command to specify a blank node selector for the openshift-storage namespace (create openshift-storage namespace in this case): Procedure Log in to the OpenShift Web Console. Click Operators -> OperatorHub . Scroll or type OpenShift Data Foundation into the Filter by keyword box to find the OpenShift Data Foundation Operator. Click Install . Set the following options on the Install Operator page: Update Channel as stable-4.17 . Installation Mode as A specific namespace on the cluster . Installed Namespace as Operator recommended namespace openshift-storage . If Namespace openshift-storage does not exist, it is created during the operator installation. Select Approval Strategy as Automatic or Manual . If you select Automatic updates, then the Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without any intervention. If you select Manual updates, then the OLM creates an update request. As a cluster administrator, you must then manually approve that update request to update the Operator to a newer version. Ensure that the Enable option is selected for the Console plugin . Click Install . Verification steps After the operator is successfully installed, a pop-up with a message, Web console update is available appears on the user interface. Click Refresh web console from this pop-up for the console changes to reflect. In the Web Console: Navigate to Installed Operators and verify that the OpenShift Data Foundation Operator shows a green tick indicating successful installation. Navigate to Storage and verify if the Data Foundation dashboard is available. 3.2. Creating an OpenShift Data Foundation Cluster for external IBM FlashSystem storage You need to create a new OpenShift Data Foundation cluster after you install the OpenShift Data Foundation operator on the OpenShift Container Platform. Prerequisites A valid Red Hat OpenShift Data Foundation Advanced subscription. For more information, see the knowledgebase article on OpenShift Data Foundation subscriptions . For Red Hat Enterprise Linux(R) operating system, ensure that there is iSCSI connectivity and then configure Linux multipath devices on the host. For Red Hat Enterprise Linux CoreOS or when the packages are already installed, configure Linux multipath devices on the host. Ensure to configure each worker with storage connectivity according to your storage system instructions. For the latest supported FlashSystem storage systems and versions, see IBM ODF FlashSystem driver documentation . Procedure In the OpenShift Web Console, click Operators -> Installed Operators to view all the installed operators. Ensure that the Project selected is openshift-storage . Click OpenShift Data Foundation and then click Create StorageSystem . In the Backing storage page, select the following options: Select Full deployment for the Deployment type option. Select Connect an external storage platform from the available options. Select IBM FlashSystem Storage from the Storage platform list. Click . In the Create storage class page, provide the following information: Enter a name for the storage class. When creating block storage persistent volumes, select the storage class <storage_class_name> for best performance. The storage class allows direct I/O path to the FlashSystem. Enter the following details of IBM FlashSystem connection: IP address User name Password Pool name Select thick or thin for the Volume mode . Click . In the Capacity and nodes page, provide the necessary details: Select a value for Requested capacity. The available options are 0.5 TiB , 2 TiB , and 4 TiB . The requested capacity is dynamically allocated on the infrastructure storage class. Select at least three nodes in three different zones. It is recommended to start with at least 14 CPUs and 34 GiB of RAM per node. If the nodes selected do not match the OpenShift Data Foundation cluster requirement of an aggregated 30 CPUs and 72 GiB of RAM, a minimal cluster will be deployed. For minimum starting node requirements, see the Resource requirements section in the Planning guide. Click . Optional: In the Security and network page, provide the necessary details: To enable encryption, select Enable data encryption for block and file storage . Choose any one or both Encryption level: Cluster-wide encryption to encrypt the entire cluster (block and file). StorageClass encryption to create encrypted persistent volume (block only) using encryption enabled storage class. Select the Connect to an external key management service checkbox. This is optional for cluster-wide encryption. Key Management Service Provider is set to Vault by default. Enter Vault Service Name, host Address of Vault server ('https://<hostname or ip>'), Port number, and Token. Expand Advanced Settings to enter additional settings and certificate details based on your Vault configuration: Enter the Key Value secret path in the Backend Path that is dedicated and unique to OpenShift Data Foundation. Optional: Enter TLS Server Name and Vault Enterprise Namespace. Provide CA Certificate, Client Certificate, and Client Private Key by uploading the respective PEM encoded certificate file. Click Save . Select Default (SDN) if you are using a single network or Custom (Multus) if you are using multiple network interfaces. Select a Public Network Interface from the dropdown. Select a Cluster Network Interface from the dropdown. NOTE: If you are using only one additional network interface, select the single NetworkAttachementDefinition , that is, ocs-public-cluster for the Public Network Interface, and leave the Cluster Network Interface blank. Click . To enable in-transit encryption, select In-transit encryption . Select a Network . Click . In the Review and create page, review if all the details are correct: To modify any configuration settings, click Back to go back to the configuration page. Click Create StorageSystem . Verification Steps Verifying the state of the pods Click Workloads -> Pods from the left pane of the OpenShift Web Console. Select openshift-storage from the Project drop-down list. Note If the Show default projects option is disabled, use the toggle button to list all the default projects. Table 3.1. Pods corresponding to OpenShift Data Foundation components Component Corresponding pods OpenShift Data Foundation Operator ocs-operator-* (1 pod on any worker node) ocs-metrics-exporter-* (1 pod on any worker node) odf-operator-controller-manager-* (1 pod on any worker node) odf-console-* (1 pod on any worker node) csi-addons-controller-manager-* (1 pod on any worker node) ibm-storage-odf-operator ibm-storage-odf-operator-* (2 pods on any worker nodes) ibm-odf-console-* ibm-flashsystem-storage ibm-flashsystem-storage-* (1 pod on any worker node) rook-ceph Operator rook-ceph-operator-* (1 pod on any worker node) Multicloud Object Gateway noobaa-operator-* (1 pod on any worker node) noobaa-core-* (1 pod on any worker node) noobaa-db-pg-* (1 pod on any worker node) noobaa-endpoint-* (1 pod on any worker node) CSI ibm-block-csi-* (1 pod on any worker node) Verifying that the OpenShift Data Foundation cluster is healthy In the Web Console, click Storage -> Data Foundation . In the Status card of the Overview tab, verify that the Storage System has a green tick mark. In the Details card, verify that the cluster information is displayed. For more information on the health of the OpenShift Data Foundation cluster using the Block and File dashboard, see Monitoring OpenShift Data Foundation . Verifying that the Multicloud Object Gateway is healthy In the Web Console, click Storage -> Data Foundation . In the Status card of the Overview tab, click Storage System and then click the storage system link from the pop up. In the Status card of the Object tab, verify that both Object Service and Data Resiliency have a green tick. In the Details card, verify that the MCG information is displayed. For more information on the health of the OpenShift Data Foundation cluster using the object dashboard, see Monitoring OpenShift Data Foundation . Verifying that IBM FlashSystem is connected and the storage cluster is ready Run the following command to verify if the OpenShift Data Foundation cluster is connected to the external IBM FlashSystem. Verifying the StorageSystem of the storage Run the following command to verify the storageSystem of IBM FlashSystem storage cluster. Verifying the subscription of the IBM operator Run the following command to verify the subscription: Verifying the CSVs Run the following command to verify that the CSVs are in the succeeded state. Verifying the IBM operator and CSI pods Run the following command to verify the IBM operator and CSI pods: Chapter 4. Uninstalling OpenShift Data Foundation from external storage system Use the steps in this section to uninstall OpenShift Data Foundation. Uninstalling OpenShift Data Foundation does not remove the RBD pool from the external cluster, or uninstall the external Red Hat Ceph Storage cluster. Uninstall Annotations Annotations on the Storage Cluster are used to change the behavior of the uninstall process. To define the uninstall behavior, the following two annotations have been introduced in the storage cluster: uninstall.ocs.openshift.io/cleanup-policy: delete uninstall.ocs.openshift.io/mode: graceful Note The uninstall.ocs.openshift.io/cleanup-policy is not applicable for external mode. The below table provides information on the different values that can used with these annotations: Table 4.1. uninstall.ocs.openshift.io uninstall annotations descriptions Annotation Value Default Behavior cleanup-policy delete Yes Rook cleans up the physical drives and the DataDirHostPath cleanup-policy retain No Rook does not clean up the physical drives and the DataDirHostPath mode graceful Yes Rook and NooBaa pauses the uninstall process until the PVCs and the OBCs are removed by the administrator/user mode forced No Rook and NooBaa proceeds with uninstall even if PVCs/OBCs provisioned using Rook and NooBaa exist respectively You can change the uninstall mode by editing the value of the annotation by using the following commands: Prerequisites Ensure that the OpenShift Data Foundation cluster is in a healthy state. The uninstall process can fail when some of the pods are not terminated successfully due to insufficient resources or nodes. In case the cluster is in an unhealthy state, contact Red Hat Customer Support before uninstalling OpenShift Data Foundation. Ensure that applications are not consuming persistent volume claims (PVCs) or object bucket claims (OBCs) using the storage classes provided by OpenShift Data Foundation. Procedure Delete the volume snapshots that are using OpenShift Data Foundation. List the volume snapshots from all the namespaces From the output of the command, identify and delete the volume snapshots that are using OpenShift Data Foundation. Delete PVCs and OBCs that are using OpenShift Data Foundation. In the default uninstall mode (graceful), the uninstaller waits till all the PVCs and OBCs that use OpenShift Data Foundation are deleted. If you wish to delete the Storage Cluster without deleting the PVCs beforehand, you may set the uninstall mode annotation to "forced" and skip this step. Doing so will result in orphan PVCs and OBCs in the system. Delete OpenShift Container Platform monitoring stack PVCs using OpenShift Data Foundation. See Removing monitoring stack from OpenShift Data Foundation Delete OpenShift Container Platform Registry PVCs using OpenShift Data Foundation. Removing OpenShift Container Platform registry from OpenShift Data Foundation Delete OpenShift Container Platform logging PVCs using OpenShift Data Foundation. Removing the cluster logging operator from OpenShift Data Foundation Delete other PVCs and OBCs provisioned using OpenShift Data Foundation. Given below is a sample script to identify the PVCs and OBCs provisioned using OpenShift Data Foundation. The script ignores the PVCs and OBCs that are used internally by OpenShift Data Foundation. Delete the OBCs. Delete the PVCs. Ensure that you have removed any custom backing stores, bucket classes, and so on that are created in the cluster. Delete the Storage Cluster object and wait for the removal of the associated resources. Delete the namespace and wait until the deletion is complete. You will need to switch to another project if openshift-storage is the active project. For example: The project is deleted if the following command returns a NotFound error. Note While uninstalling OpenShift Data Foundation, if the namespace is not deleted completely and remains in Terminating state, perform the steps in Troubleshooting and deleting remaining resources during Uninstall to identify objects that are blocking the namespace from being terminated. Confirm all PVs provisioned using OpenShift Data Foundation are deleted. If there is any PV left in the Released state, delete it. Remove CustomResourceDefinitions . To ensure that OpenShift Data Foundation is uninstalled completely: In the OpenShift Container Platform Web Console, click Storage . Verify that OpenShift Data Foundation no longer appears under Storage. 4.1. Removing monitoring stack from OpenShift Data Foundation Use this section to clean up the monitoring stack from OpenShift Data Foundation. The PVCs that are created as a part of configuring the monitoring stack are in the openshift-monitoring namespace. Prerequisites PVCs are configured to use the OpenShift Container Platform monitoring stack. For information, see configuring monitoring stack . Procedure List the pods and PVCs that are currently running in the openshift-monitoring namespace. Edit the monitoring configmap . Remove any config sections that reference the OpenShift Data Foundation storage classes as shown in the following example and save it. Before editing After editing In this example, alertmanagerMain and prometheusK8s monitoring components are using the OpenShift Data Foundation PVCs. List the pods consuming the PVC. In this example, the alertmanagerMain and prometheusK8s pods that were consuming the PVCs are in the Terminating state. You can delete the PVCs once these pods are no longer using OpenShift Data Foundation PVC. Delete relevant PVCs. Make sure you delete all the PVCs that are consuming the storage classes. 4.2. Removing OpenShift Container Platform registry from OpenShift Data Foundation Use this section to clean up the OpenShift Container Platform registry from OpenShift Data Foundation. If you want to configure an alternative storage, see image registry The PVCs that are created as a part of configuring OpenShift Container Platform registry are in the openshift-image-registry namespace. Prerequisites The image registry should have been configured to use an OpenShift Data Foundation PVC. Procedure Edit the configs.imageregistry.operator.openshift.io object and remove the content in the storage section. Before editing After editing In this example, the PVC is called registry-cephfs-rwx-pvc , which is now safe to delete. Delete the PVC. 4.3. Removing the cluster logging operator from OpenShift Data Foundation Use this section to clean up the cluster logging operator from OpenShift Data Foundation. The Persistent Volume Claims (PVCs) that are created as a part of configuring the cluster logging operator are in the openshift-logging namespace. Prerequisites The cluster logging instance should have been configured to use the OpenShift Data Foundation PVCs. Procedure Remove the ClusterLogging instance in the namespace. The PVCs in the openshift-logging namespace are now safe to delete. Delete the PVCs. <pvc-name> Is the name of the PVC 4.4. Removing external IBM FlashSystem secret You need to clean up the FlashSystem secret from OpenShift Data Foundation while uninstalling. This secret is created when you configure the external IBM FlashSystem Storage. For more information, see Creating an OpenShift Data Foundation Cluster for external IBM FlashSystem storage . Procedure Remove the IBM FlashSystem secret by using the following command:

Commands:
oc annotate namespace openshift-storage openshift.io/node-selector=
python3 ceph-external-cluster-details-exporter.py --help
[Configurations] format = bash cephfs-filesystem-name = <filesystem-name> rbd-data-pool-name = <pool_name>
python3 ceph-external-cluster-details-exporter.py --config-file /config.ini
python3 ceph-external-cluster-details-exporter.py --rbd-data-pool-name <rbd block pool name> [optional arguments]
python3 ceph-external-cluster-details-exporter.py --rbd-data-pool-name ceph-rbd --monitoring-endpoint xxx.xxx.xxx.xxx --monitoring-endpoint-port xxxx --rgw-endpoint xxx.xxx.xxx.xxx:xxxx --run-as-user client.ocs
python3 ceph-external-clustergw-endpoint r-details-exporter.py --rbd-data-pool-name <rbd block pool name> --rgw-endpoint <ip_address>:<port> --rgw-tls-cert-path <file path containing cert>
python3 /etc/ceph/create-external-cluster-resources.py --cephfs-filesystem-name myfs --rbd-data-pool-name replicapool --cluster-name rookStorage --restricted-auth-permission true
[{"name": "rook-ceph-mon-endpoints", "kind": "ConfigMap", "data": {"data": "xxx.xxx.xxx.xxx:xxxx", "maxMonId": "0", "mapping": "{}"}}, {"name": "rook-ceph-mon", "kind": "Secret", "data": {"admin-secret": "admin-secret", "fsid": "<fs-id>", "mon-secret": "mon-secret"}}, {"name": "rook-ceph-operator-creds", "kind": "Secret", "data": {"userID": "<user-id>", "userKey": "<user-key>"}}, {"name": "rook-csi-rbd-node", "kind": "Secret", "data": {"userID": "csi-rbd-node", "userKey": "<user-key>"}}, {"name": "ceph-rbd", "kind": "StorageClass", "data": {"pool": "<pool>"}}, {"name": "monitoring-endpoint", "kind": "CephCluster", "data": {"MonitoringEndpoint": "xxx.xxx.xxx.xxx", "MonitoringPort": "xxxx"}}, {"name": "rook-ceph-dashboard-link", "kind": "Secret", "data": {"userID": "ceph-dashboard-link", "userKey": "<user-key>"}}, {"name": "rook-csi-rbd-provisioner", "kind": "Secret", "data": {"userID": "csi-rbd-provisioner", "userKey": "<user-key>"}}, {"name": "rook-csi-cephfs-provisioner", "kind": "Secret", "data": {"adminID": "csi-cephfs-provisioner", "adminKey": "<admin-key>"}}, {"name": "rook-csi-cephfs-node", "kind": "Secret", "data": {"adminID": "csi-cephfs-node", "adminKey": "<admin-key>"}}, {"name": "cephfs", "kind": "StorageClass", "data": {"fsName": "cephfs", "pool": "cephfs_data"}}, {"name": "ceph-rgw", "kind": "StorageClass", "data": {"endpoint": "xxx.xxx.xxx.xxx:xxxx", "poolPrefix": "default"}}, {"name": "rgw-admin-ops-user", "kind": "Secret", "data": {"accessKey": "<access-key>", "secretKey": "<secret-key>"}}]
python3 ceph-external-cluster-details-exporter.py --upgrade
oc get cephcluster -n openshift-storage NAME DATADIRHOSTPATH MONCOUNT AGE PHASE MESSAGE HEALTH EXTERNAL ocs-external-storagecluster-cephcluster 30m Connected Cluster connected successfully HEALTH_OK true
oc get storagecluster -n openshift-storage NAME AGE PHASE EXTERNAL CREATED AT VERSION ocs-external-storagecluster 30m Ready true 2021-11-17T09:09:52Z 4.17.0
oc get cephobjectstore -n openshift-storage" NAME PHASE ENDPOINT SECUREENDPOINT AGE object-store1 Ready <http://IP/FQDN:port> 15m
oc annotate namespace openshift-storage openshift.io/node-selector=
oc get flashsystemclusters.odf.ibm.com NAME AGE PHASE CREATED AT ibm-flashsystemcluster 35s 2021-09-23T07:44:52Z
oc get storagesystems.odf.openshift.io NAME STORAGE-SYSTEM-KIND STORAGE-SYSTEM-NAME ibm-flashsystemcluster-storagesystem flashsystemcluster.odf.ibm.com/v1alpha1 ibm-flashsystemcluster ocs-storagecluster-storagesystem storagecluster.ocs.openshift.io/v1 ocs-storagecluster
oc get subscriptions.operators.coreos.com NAME PACKAGE SOURCE CHANNEL ibm-block-csi-operator-stable-certified-operators-openshift-marketplace ibm-block-csi-operator certified-operators stable ibm-storage-odf-operator ibm-storage-odf-operator odf-catalogsource stable-v1 noobaa-operator-alpha-odf-catalogsource-openshift-storage noobaa-operator odf-catalogsource alpha ocs-operator-alpha-odf-catalogsource-openshift-storage ocs-operator odf-catalogsource alpha odf-operator odf-operator odf-catalogsource alpha
oc get csv NAME DISPLAY VERSION REPLACES PHASE ibm-block-csi-operator.v1.6.0 Operator for IBM block storage CSI driver 1.6.0 ibm-block-csi-operator.v1.5.0 Succeeded ibm-storage-odf-operator.v0.2.1 IBM Storage ODF operator 0.2.1 Installing noobaa-operator.v5.9.0 NooBaa Operator 5.9.0 Succeeded ocs-operator.v4.17.0 OpenShift Container Storage 4.17.0 Succeeded odf-operator.v4.17.0 OpenShift Data Foundation 4.17.0 Succeeded
oc get pods NAME READY STATUS RESTARTS AGE 5cb2b16ec2b11bf63dbe691d44a63535dc026bb5315d5075dc6c398b3c58l94 0/1 Completed 0 10m 7c806f6568f85cf10d72508261a2535c220429b54dbcf87349b9b4b9838fctg 0/1 Completed 0 8m47s c4b05566c04876677a22d39fc9c02512401d0962109610e85c8fb900d3jd7k2 0/1 Completed 0 10m c5d1376974666727b02bf25b3a4828241612186744ef417a668b4bc1759rzts 0/1 Completed 0 10m ibm-block-csi-operator-7b656d6cc8-bqnwp 1/1 Running 0 8m3s ibm-odf-console-97cb7c84c-r52dq 0/1 ContainerCreating 0 8m4s ibm-storage-odf-operator-57b8bc47df-mgkc7 1/2 ImagePullBackOff 0 94s noobaa-operator-7698579d56-x2zqs 1/1 Running 0 9m37s ocs-metrics-exporter-94b57d764-zq2g2 1/1 Running 0 9m32s ocs-operator-5d96d778f6-vxlq5 1/1 Running 0 9m33s odf-catalogsource-j7q72 1/1 Running 0 10m odf-console-8987868cd-m7v29 1/1 Running 0 9m35s odf-operator-controller-manager-5dbf785564-rwsgq 2/2 Running 0 9m35s rook-ceph-operator-68b4b976d8-dlc6w 1/1 Running 0 9m32s
oc annotate storagecluster ocs-external-storagecluster -n openshift-storage uninstall.ocs.openshift.io/mode="forced" --overwrite storagecluster.ocs.openshift.io/ocs-external-storagecluster annotated
oc get volumesnapshot --all-namespaces
oc delete volumesnapshot <VOLUME-SNAPSHOT-NAME> -n <NAMESPACE>
#!/bin/bash RBD_PROVISIONER="openshift-storage.rbd.csi.ceph.com" CEPHFS_PROVISIONER="openshift-storage.cephfs.csi.ceph.com" NOOBAA_PROVISIONER="openshift-storage.noobaa.io/obc" RGW_PROVISIONER="openshift-storage.ceph.rook.io/bucket" NOOBAA_DB_PVC="noobaa-db" NOOBAA_BACKINGSTORE_PVC="noobaa-default-backing-store-noobaa-pvc" Find all the OCS StorageClasses OCS_STORAGECLASSES=USD(oc get storageclasses | grep -e "USDRBD_PROVISIONER" -e "USDCEPHFS_PROVISIONER" -e "USDNOOBAA_PROVISIONER" -e "USDRGW_PROVISIONER" | awk '{print USD1}') List PVCs in each of the StorageClasses for SC in USDOCS_STORAGECLASSES do echo "======================================================================" echo "USDSC StorageClass PVCs and OBCs" echo "======================================================================" oc get pvc --all-namespaces --no-headers 2>/dev/null | grep USDSC | grep -v -e "USDNOOBAA_DB_PVC" -e "USDNOOBAA_BACKINGSTORE_PVC" oc get obc --all-namespaces --no-headers 2>/dev/null | grep USDSC echo done
oc delete obc <obc name> -n <project name>
oc delete pvc <pvc name> -n <project-name>
oc delete -n openshift-storage storagesystem --all --wait=true
oc project default oc delete project openshift-storage --wait=true --timeout=5m
oc get project openshift-storage
oc get pv oc delete pv <pv name>
oc delete crd backingstores.noobaa.io bucketclasses.noobaa.io cephblockpools.ceph.rook.io cephclusters.ceph.rook.io cephfilesystems.ceph.rook.io cephnfses.ceph.rook.io cephobjectstores.ceph.rook.io cephobjectstoreusers.ceph.rook.io noobaas.noobaa.io ocsinitializations.ocs.openshift.io storageclusters.ocs.openshift.io cephclients.ceph.rook.io cephobjectrealms.ceph.rook.io cephobjectzonegroups.ceph.rook.io cephobjectzones.ceph.rook.io cephrbdmirrors.ceph.rook.io storagesystems.odf.openshift.io --wait=true --timeout=5m
oc get pod,pvc -n openshift-monitoring NAME READY STATUS RESTARTS AGE pod/alertmanager-main-0 3/3 Running 0 8d pod/alertmanager-main-1 3/3 Running 0 8d pod/alertmanager-main-2 3/3 Running 0 8d pod/cluster-monitoring- operator-84457656d-pkrxm 1/1 Running 0 8d pod/grafana-79ccf6689f-2ll28 2/2 Running 0 8d pod/kube-state-metrics- 7d86fb966-rvd9w 3/3 Running 0 8d pod/node-exporter-25894 2/2 Running 0 8d pod/node-exporter-4dsd7 2/2 Running 0 8d pod/node-exporter-6p4zc 2/2 Running 0 8d pod/node-exporter-jbjvg 2/2 Running 0 8d pod/node-exporter-jj4t5 2/2 Running 0 6d18h pod/node-exporter-k856s 2/2 Running 0 6d18h pod/node-exporter-rf8gn 2/2 Running 0 8d pod/node-exporter-rmb5m 2/2 Running 0 6d18h pod/node-exporter-zj7kx 2/2 Running 0 8d pod/openshift-state-metrics- 59dbd4f654-4clng 3/3 Running 0 8d pod/prometheus-adapter- 5df5865596-k8dzn 1/1 Running 0 7d23h pod/prometheus-adapter- 5df5865596-n2gj9 1/1 Running 0 7d23h pod/prometheus-k8s-0 6/6 Running 1 8d pod/prometheus-k8s-1 6/6 Running 1 8d pod/prometheus-operator- 55cfb858c9-c4zd9 1/1 Running 0 6d21h pod/telemeter-client- 78fc8fc97d-2rgfp 3/3 Running 0 8d NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE persistentvolumeclaim/my-alertmanager-claim-alertmanager-main-0 Bound pvc-0d519c4f-15a5-11ea-baa0-026d231574aa 40Gi RWO ocs-external-storagecluster-ceph-rbd 8d persistentvolumeclaim/my-alertmanager-claim-alertmanager-main-1 Bound pvc-0d5a9825-15a5-11ea-baa0-026d231574aa 40Gi RWO ocs-external-storagecluster-ceph-rbd 8d persistentvolumeclaim/my-alertmanager-claim-alertmanager-main-2 Bound pvc-0d6413dc-15a5-11ea-baa0-026d231574aa 40Gi RWO ocs-external-storagecluster-ceph-rbd 8d persistentvolumeclaim/my-prometheus-claim-prometheus-k8s-0 Bound pvc-0b7c19b0-15a5-11ea-baa0-026d231574aa 40Gi RWO ocs-external-storagecluster-ceph-rbd 8d persistentvolumeclaim/my-prometheus-claim-prometheus-k8s-1 Bound pvc-0b8aed3f-15a5-11ea-baa0-026d231574aa 40Gi RWO ocs-external-storagecluster-ceph-rbd 8d
oc -n openshift-monitoring edit configmap cluster-monitoring-config
. . . apiVersion: v1 data: config.yaml: | alertmanagerMain: volumeClaimTemplate: metadata: name: my-alertmanager-claim spec: resources: requests: storage: 40Gi storageClassName: ocs-external-storagecluster-ceph-rbd prometheusK8s: volumeClaimTemplate: metadata: name: my-prometheus-claim spec: resources: requests: storage: 40Gi storageClassName: ocs-external-storagecluster-ceph-rbd kind: ConfigMap metadata: creationTimestamp: "2019-12-02T07:47:29Z" name: cluster-monitoring-config namespace: openshift-monitoring resourceVersion: "22110" selfLink: /api/v1/namespaces/openshift-monitoring/configmaps/cluster-monitoring-config uid: fd6d988b-14d7-11ea-84ff-066035b9efa8 . . .
. . . apiVersion: v1 data: config.yaml: | kind: ConfigMap metadata: creationTimestamp: "2019-11-21T13:07:05Z" name: cluster-monitoring-config namespace: openshift-monitoring resourceVersion: "404352" selfLink: /api/v1/namespaces/openshift-monitoring/configmaps/cluster-monitoring-config uid: d12c796a-0c5f-11ea-9832-063cd735b81c . . .
oc get pod,pvc -n openshift-monitoring NAME READY STATUS RESTARTS AGE pod/alertmanager-main-0 3/3 Terminating 0 10h pod/alertmanager-main-1 3/3 Terminating 0 10h pod/alertmanager-main-2 3/3 Terminating 0 10h pod/cluster-monitoring-operator-84cd9df668-zhjfn 1/1 Running 0 18h pod/grafana-5db6fd97f8-pmtbf 2/2 Running 0 10h pod/kube-state-metrics-895899678-z2r9q 3/3 Running 0 10h pod/node-exporter-4njxv 2/2 Running 0 18h pod/node-exporter-b8ckz 2/2 Running 0 11h pod/node-exporter-c2vp5 2/2 Running 0 18h pod/node-exporter-cq65n 2/2 Running 0 18h pod/node-exporter-f5sm7 2/2 Running 0 11h pod/node-exporter-f852c 2/2 Running 0 18h pod/node-exporter-l9zn7 2/2 Running 0 11h pod/node-exporter-ngbs8 2/2 Running 0 18h pod/node-exporter-rv4v9 2/2 Running 0 18h pod/openshift-state-metrics-77d5f699d8-69q5x 3/3 Running 0 10h pod/prometheus-adapter-765465b56-4tbxx 1/1 Running 0 10h pod/prometheus-adapter-765465b56-s2qg2 1/1 Running 0 10h pod/prometheus-k8s-0 6/6 Terminating 1 9m47s pod/prometheus-k8s-1 6/6 Terminating 1 9m47s pod/prometheus-operator-cbfd89f9-ldnwc 1/1 Running 0 43m pod/telemeter-client-7b5ddb4489-2xfpz 3/3 Running 0 10h NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE persistentvolumeclaim/ocs-alertmanager-claim-alertmanager-main-0 Bound pvc-2eb79797-1fed-11ea-93e1-0a88476a6a64 40Gi RWO ocs-external-storagecluster-ceph-rbd 19h persistentvolumeclaim/ocs-alertmanager-claim-alertmanager-main-1 Bound pvc-2ebeee54-1fed-11ea-93e1-0a88476a6a64 40Gi RWO ocs-external-storagecluster-ceph-rbd 19h persistentvolumeclaim/ocs-alertmanager-claim-alertmanager-main-2 Bound pvc-2ec6a9cf-1fed-11ea-93e1-0a88476a6a64 40Gi RWO ocs-external-storagecluster-ceph-rbd 19h persistentvolumeclaim/ocs-prometheus-claim-prometheus-k8s-0 Bound pvc-3162a80c-1fed-11ea-93e1-0a88476a6a64 40Gi RWO ocs-external-storagecluster-ceph-rbd 19h persistentvolumeclaim/ocs-prometheus-claim-prometheus-k8s-1 Bound pvc-316e99e2-1fed-11ea-93e1-0a88476a6a64 40Gi RWO ocs-external-storagecluster-ceph-rbd 19h
oc delete -n openshift-monitoring pvc <pvc-name> --wait=true --timeout=5m
oc edit configs.imageregistry.operator.openshift.io
. . . storage: pvc: claim: registry-cephfs-rwx-pvc . . .
. . . storage: emptyDir: {} . . .
oc delete pvc <pvc-name> -n openshift-image-registry --wait=true --timeout=5m
oc delete clusterlogging instance -n openshift-logging --wait=true --timeout=5m
oc delete pvc <pvc-name> -n openshift-logging --wait=true --timeout=5m
oc delete secret -n openshift-storage ibm-flashsystem-storage