Chapter 2. Deploying OpenShift Container Storage on Red Hat OpenStack Platform in external mode
Chapter 2. Deploying OpenShift Container Storage on Red Hat OpenStack Platform in external mode Red Hat OpenShift Container Storage can use an externally hosted Red Hat Ceph Storage (RHCS) cluster as the storage provider on Red Hat OpenStack Platform. See Planning your deployment for more information. For instructions regarding how to install a RHCS 4 cluster, see Installation guide . Follow these steps to deploy OpenShift Container Storage in external mode: Install the OpenShift Container Storage Operator . Create the OpenShift Container Storage Cluster Service . 2.1. Installing Red Hat OpenShift Container Storage Operator You can install Red Hat OpenShift Container Storage Operator using the Red Hat OpenShift Container Platform Operator Hub. For information about the hardware and software requirements, see Planning your deployment . Prerequisites You must be logged into the OpenShift Container Platform (RHOCP) cluster. You must have at least three worker nodes in the RHOCP cluster. Note When you need to override the cluster-wide default node selector for OpenShift Container Storage, you can use the following command in command line interface to specify a blank node selector for the openshift-storage namespace: Taint a node as infra to ensure only Red Hat OpenShift Container Storage resources are scheduled on that node. This helps you save on subscription costs. For more information, see How to use dedicated worker nodes for Red Hat OpenShift Container Storage chapter in Managing and Allocating Storage Resources guide. Procedure Click Operators OperatorHub in the left pane of the OpenShift Web Console. Use Filter by keyword text box or the filter list to search for OpenShift Container Storage from the list of operators. Click OpenShift Container Storage . On the OpenShift Container Storage operator page, click Install. On the Install Operator page, ensure the following options are selected by default:: Update Channel as stable-4.6 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 will be created during the operator installation. Select Enable operator recommended cluster monitoring on this namespace checkbox as this is required for cluster monitoring. Select Approval Strategy as Automatic or Manual . Approval Strategy is set to Automatic by default. Approval Strategy as Automatic . Note When you select the Approval Strategy as Automatic , approval is not required either during fresh installation or when updating to the latest version of OpenShift Container Storage. Click Install Wait for the install to initiate. This may take up to 20 minutes. Click Operators Installed Operators Ensure the Project is openshift-storage . By default, the Project is openshift-storage . Wait for the Status of OpenShift Container Storage to change to Succeeded . Approval Strategy as Manual . Note When you select the Approval Strategy as Manual , approval is required during fresh installation or when updating to the latest version of OpenShift Container Storage. Click Install On the Manual approval required page, you can either click Approve or View Installed Operators in namespace openshift-storage to install the operator. Important Before you click either of the options, wait for a few minutes on the Manual approval required page until the install plan gets loaded in the window. Important If you choose to click Approve , you must review the install plan before you proceed. If you click Approve . Wait for a few minutes while the OpenShift Container Storage Operator is getting installed. On the Installed operator - ready for use page, click View Operator . Ensure the Project is openshift-storage . By default, the Project is openshift-storage . Click Operators Installed Operators Wait for the Status of OpenShift Container Storage to change to Succeeded . If you click View Installed Operators in namespace openshift-storage . On the Installed Operators page, click ocs-operator . On the Subscription Details page, click the Install Plan link. On the InstallPlan Details page, click Preview Install Plan . Review the install plan and click Approve . Wait for the Status of the Components to change from Unknown to either Created or Present . Click Operators Installed Operators Ensure the Project is openshift-storage . By default, the Project is openshift-storage . Wait for the Status of OpenShift Container Storage to change to Succeeded . Verification steps Verify that OpenShift Container Storage Operator shows a green tick indicating successful installation. Click View Installed Operators in namespace openshift-storage link to verify that OpenShift Container Storage Operator shows the Status as Succeeded on the Installed Operators dashboard. 2.2. Creating an OpenShift Container Storage Cluster service for external mode You need to create a new OpenShift Container Storage cluster service after you install OpenShift Container Storage operator on OpenShift Container Platform deployed on Red Hat OpenStack platform. Prerequisites You must be logged into the working OpenShift Container Platform version 4.5.4 or above. OpenShift Container Storage operator must be installed. For more information, see Installing OpenShift Container Storage Operator using the Operator Hub . Red Hat Ceph Storage version 4.2z1 or later is required for the external cluster. For more information, see this knowledge base article on Red Hat Ceph Storage releases and corresponding Ceph package versions . If you have updated the Red Hat Ceph Storage cluster from a version lower than 4.1.1 to the latest release and is not a freshly deployed cluster, you must manually set the application type for CephFS pool on the Red Hat Ceph Storage cluster to enable CephFS PVC creation in external mode. For more details, see Troubleshooting CephFS PVC creation in external mode . Red Hat Ceph Storage must have Ceph Dashboard installed and configured, and must use port 9283 for Ceph Manager Prometheus exporter. For more information, see Ceph Dashboard installation and access . It is recommended that the PG Autoscaler option must be enabled for the external Red Hat Ceph Storage cluster. For more information, see The placement group autoscaler section in the Red Hat Ceph Storage documentation. The external Ceph cluster should have an existing RBD pool pre-configured for use. If it does not exist, contact your Red Hat Ceph Storage administrator to create one before you move ahead with OpenShift Container Storage deployment. It is recommended to use a separate pool for each OpenShift Container Storage cluster. Procedure Click Operators Installed Operators to view all the installed operators. Ensure that the Project selected is openshift-storage . Figure 2.1. OpenShift Container Storage Operator page Click OpenShift Container Storage . Figure 2.2. Details tab of OpenShift Container Storage Click Create Instance link of Storage Cluster. Select Mode as External . By default, Internal is selected as deployment mode. Figure 2.3. Connect to external cluster section on Create Storage Cluster form In the Connect to external cluster section, 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 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. Note You can also run the script from inside a MON container (containerized deployment) or from a MON node (rpm deployment). To retrieve the external cluster details from the RHCS cluster, run the following command For example: In the above example, --rbd-data-pool-name is a mandatory parameter used for providing block storage in OpenShift Container Storage. --rgw-endpoint is optional. Provide this parameter if object storage is to be provisioned through Ceph Rados Gateway for OpenShift Container Storage. Provide the endpoint in the following format: <ip_address>:<port> --monitoring-endpoint is optional. It is the IP address of the active ceph-mgr reachable from the OpenShift Container Platform cluster. If not provided, the value is automatically populated. --monitoring-endpoint-port is optional. It is the port associated with the ceph-mgr Prometheus exporter specified by --monitoring-endpoint . If not provided, the value is automatically populated. Only port 9283 is supported in OpenShift Container Storage 4.6. -- run-as-user is an optional parameter used for providing a 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 Example of JSON output generated using the python script: Save the JSON output to a file with .json extension Note For OpenShift Container Storage to work seamlessly, ensure that the parameters (RGW endpoint, CephFS details, RBD pool, and so on) to be uploaded using the JSON file remains unchanged on the RHCS external cluster after the storage cluster creation. Click External cluster metadata Browse to select and upload the JSON file. The content of the JSON file is populated and displayed in the text box. Figure 2.4. Json file content Click Create . The Create button is enabled only after you upload the .json file. Verification steps Verify that the final Status of the installed storage cluster shows as Phase: Ready with a green tick mark. Click Operators Installed Operators Storage Cluster link to view the storage cluster installation status. Alternatively, when you are on the Operator Details tab, you can click on the Storage Cluster tab to view the status. To verify that OpenShift Container Storage, pods and StorageClass are successfully installed, see Verifying your external mode OpenShift Container Storage installation . 2.3. Verifying your OpenShift Container Storage installation for external mode Use this section to verify that OpenShift Container Storage 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. 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 Container Storage components" Verify that the following pods are in running state: Table 2.1. Pods corresponding to OpenShift Container Storage components Component Corresponding pods OpenShift Container Storage Operator ocs-operator-* (1 pod on any worker node) ocs-metrics-exporter-* 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-* (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 Container Storage cluster is healthy Click Home Overview from the left pane of the OpenShift Web Console and click Persistent Storage tab. In the Status card , verify that OCS Cluster has a green tick mark as shown in the following image: Figure 2.5. Health status card in Persistent Storage Overview Dashboard In the Details card , verify that the cluster information is displayed as follows: Service Name OpenShift Container Storage Cluster Name ocs-external-storagecluster Provider OpenStack Mode External Version ocs-operator-4.6.0 For more information on the health of OpenShift Container Storage cluster using the persistent storage dashboard, see Monitoring OpenShift Container Storage . 2.3.3. Verifying that the Multicloud Object Gateway is healthy Click Home Overview from the left pane of the OpenShift Web Console and click the Object Service tab. In the Status card , verify that both Object Service and Data Resiliency are in Ready state (green tick). Figure 2.6. Health status card in Object Service Overview Dashboard In the Details card , verify that the MCG information is displayed appropriately as follows: Service Name OpenShift Container Storage System Name Multicloud Object Gateway RADOS Object Gateway Provider OpenStack Version ocs-operator-4.6.0 Note The RADOS Object Gateway is only listed in case RADOS Object Gateway endpoint details were included while deploying OpenShift Container Storage in external mode. For more information on the health of OpenShift Container Storage cluster using the object service dashboard, see Monitoring OpenShift Container Storage . 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 Container Storage 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 an 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 Container Storage 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. 2.4. Uninstalling OpenShift Container Storage in external mode 2.4.1. Uninstalling OpenShift Container Storage in External mode Use the steps in this section to uninstall OpenShift Container Storage. Uninstalling OpenShift Container Storage 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 2.2. 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 Container Storage 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 Container Storage. Ensure that applications are not consuming persistent volume claims (PVCs) or object bucket claims (OBCs) using the storage classes provided by OpenShift Container Storage. Procedure Delete the volume snapshots that are using OpenShift Container Storage. List the volume snapshots from all the namespaces From the output of the command, identify and delete the volume snapshots that are using OpenShift Container Storage. Delete PVCs and OBCs that are using OpenShift Container Storage. In the default uninstall mode (graceful), the uninstaller waits till all the PVCs and OBCs that use OpenShift Container Storage 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 Container Storage. See Section 1.4.1.1, "Removing monitoring stack from OpenShift Container Storage" Delete OpenShift Container Platform Registry PVCs using OpenShift Container Storage. See Section 1.4.1.2, "Removing OpenShift Container Platform registry from OpenShift Container Storage" Delete OpenShift Container Platform logging PVCs using OpenShift Container Storage. See Section 1.4.1.3, "Removing the cluster logging operator from OpenShift Container Storage" Delete other PVCs and OBCs provisioned using OpenShift Container Storage. Given below is a sample script to identify the PVCs and OBCs provisioned using OpenShift Container Storage. The script ignores the PVCs and OBCs that are used internally by Openshift Container Storage. Delete the OBCs. Delete the PVCs. Ensure that you have removed any custom backing stores, bucket classes, etc., 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 Container Storage, 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 Container Storage are deleted. If there is any PV left in the Released state, delete it. Delete the Multicloud Object Gateway storageclass. Remove CustomResourceDefinitions . To ensure that OpenShift Container Storage is uninstalled completely, on the OpenShift Container Platform Web Console, Click Home Overview to access the dashboard. Verify that the Persistent Storage and Object Service tabs no longer appear to the Cluster tab. 2.4.2. Removing monitoring stack from OpenShift Container Storage Use this section to clean up the monitoring stack from OpenShift Container Storage. 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 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 Container Storage 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 Container Storage 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 Container Storage PVC. Delete relevant PVCs. Make sure you delete all the PVCs that are consuming the storage classes. 2.4.3. Removing OpenShift Container Platform registry from OpenShift Container Storage Use this section to clean up OpenShift Container Platform registry from OpenShift Container Storage. 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 Container Storage 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. 2.4.4. Removing the cluster logging operator from OpenShift Container Storage Use this section to clean up the cluster logging operator from OpenShift Container Storage. The PVCs that are created as a part of configuring cluster logging operator are in the openshift-logging namespace. Prerequisites The cluster logging instance should have been configured to use OpenShift Container Storage PVCs. Procedure Remove the ClusterLogging instance in the namespace. The PVCs in the openshift-logging namespace are now safe to delete. Delete PVCs.
oc annotate namespace openshift-storage openshift.io/node-selector= python3 ceph-external-cluster-details-exporter.py --help 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 9283 --rgw-endpoint xxx.xxx.xxx.xxx:xxxx --run-as-user client.ocs [{"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": "client.healthchecker", "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": "ceph-rbd"}}, {"name": "monitoring-endpoint", "kind": "CephCluster", "data": {"MonitoringEndpoint": "xxx.xxx.xxx.xxx", "MonitoringPort": "xxxx"}}, {"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"}}] oc get cephcluster -n openshift-storage NAME DATADIRHOSTPATH MONCOUNT AGE PHASE MESSAGE HEALTH ocs-external-storagecluster-cephcluster 31m15s Connected Cluster connected successfully HEALTH_OK oc get storagecluster -n openshift-storage NAME AGE PHASE EXTERNAL CREATED AT VERSION ocs-external-storagecluster 31m15s Ready true 2020-07-29T20:43:04Z 4.6.0 oc annotate storagecluster ocs-external-storagecluster 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 storagecluster --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 storageclass openshift-storage.noobaa.io --wait=true --timeout=5m 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 --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