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Policy Definition Library
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UCS Clusters
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API Reference
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API
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Fleet
- Adding a Cluster to a Fleet
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- Creating a Federation Connection and Downloading kubeconfig
- Creating a Federation Connection
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- Permissions Management
- Using the Karmada API
- Appendix
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FAQs
- About UCS
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Billing
- How Is UCS Billed?
- What Status of a Cluster Will Incur UCS Charges?
- Why Am I Still Being Billed After I Purchase a Resource Package?
- How Do I Change the Billing Mode of a Cluster from Pay-per-Use to Yearly/Monthly?
- What Types of Invoices Are There?
- Can I Unsubscribe from or Modify a Resource Package?
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Permissions
- How Do I Configure Access Permissions for Each Function of the UCS Console?
- What Can I Do If an IAM User Cannot Obtain Cluster or Fleet Information After Logging In to UCS?
- How Do I Restore ucs_admin_trust I Deleted or Modified?
- What Can I Do If I Cannot Associate the Permission Policy with a Fleet or Cluster?
- How Do I Clear RBAC Resources After a Cluster Is Unregistered?
- Policy Center
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Fleets
- What Can I Do If Cluster Federation Verification Fails to Be Enabled for a Fleet?
- What Can I Do If an Abnormal, Federated Cluster Fails to Be Removed from the Fleet?
- What Can I Do If an Nginx Ingress Is in the Unready State After Being Deployed?
- What Can I Do If "Error from server (Forbidden)" Is Displayed When I Run the kubectl Command?
- Huawei Cloud Clusters
- Attached Clusters
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On-Premises Clusters
- What Can I Do If an On-Premises Cluster Fails to Be Connected?
- How Do I Manually Clear Nodes of an On-Premises Cluster?
- How Do I Downgrade a cgroup?
- What Can I Do If the VM SSH Connection Times Out?
- How Do I Expand the Disk Capacity of the CIA Add-on in an On-Premises Cluster?
- What Can I Do If the Cluster Console Is Unavailable After the Master Node Is Shut Down?
- What Can I Do If a Node Is Not Ready After Its Scale-Out?
- How Do I Update the CA/TLS Certificate of an On-Premises Cluster?
- What Can I Do If an On-Premises Cluster Fails to Be Installed?
- Multi-Cloud Clusters
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Cluster Federation
- What Can I Do If the Pre-upgrade Check of the Cluster Federation Fails?
- What Can I Do If a Cluster Fails to Be Added to a Federation?
- What Can I Do If Status Verification Fails When Clusters Are Added to a Federation?
- What Can I Do If an HPA Created on the Cluster Federation Management Plane Fails to Be Distributed to Member Clusters?
- What Can I Do If an MCI Object Fails to Be Created?
- What Can I Do If I Fail to Access a Service Through MCI?
- What Can I Do If an MCS Object Fails to Be Created?
- What Can I Do If an MCS or MCI Instance Fails to Be Deleted?
- Traffic Distribution
- Container Intelligent Analysis
- General Reference
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Creating a PVC
- After a PVC is created on the UCS console, a PVC with the same name is automatically created in your cluster. Also a PersistentVolume (PV) is created and bound with the PVC. If you are not familiar with the relationship among PVs, PVCs, and StorageClasses in Kubernetes, see Persistent Storage.
- You can modify or delete the PVCs automatically created by UCS on the cluster console. However, if the PVC settings on the UCS console are not modified accordingly, the modified or deleted PVCs will be re-created by UCS. You are advised to change the settings on the UCS console.
- When a non-Huawei Cloud cluster uses a PVC to mount cloud storage, the cluster provider must support StorageClasses for dynamically creating PVs. Run the following command to query the StorageClass configuration and the interconnected backend storage resources of the cluster. For more information about StorageClass, see Storage Classes.
kubectl get storageclass
Creating a PVC
- Log in to the UCS console. In the navigation pane, choose Fleets.
- On the Fleets tab, click the name of the federation-enabled fleet to access the fleet console.
- In the navigation pane, choose Storage. On the PersistentVolumeClaims (PVCs) tab, click Create PVC in the upper right corner.
- Specify basic information.
- Name: Enter a unique name of a PVC to be added.
- Namespace: namespace that the PVC will belong to. If this parameter is not specified, the default namespace is used.
- Cluster: Click
to select the cluster where the PVC is to be deployed.
Figure 1 Adding a cluster
Table 1 Parameters for adding a Huawei Cloud cluster Parameter
Description
Cluster
Select a Huawei Cloud cluster.
Storage Class
- csi-disk: EVS disk. Specify the AZ and disk type.
- AZ: Specify the AZ where the EVS disk is located. The supported EVS disk types may vary in different AZs.
- EVS Disk Type: Available disk types are common I/O, high I/O, and ultra-high I/O, and the storage pools corresponding to the disk types are SATA, SAS, and SSD.
- csi-nas: indicates SFS.
- csi-obs: indicates OBS. You need to specify the instance type and object storage type, and add the access key.
- Instance Type: an object bucket or a parallel file system. Parallel file system is a high-performance file system provided by OBS. It provides high-performance object-based access.
- OBS Class: Standard and Infrequent access OBS buckets are supported. OBS Infrequent Access is highly reliable and cost-effective for real-time access. It is ideal for storing data that is semi-frequently accessed (less than 12 times a year). The application scenarios include file synchronization or sharing, and enterprise-level backup.
Access Mode
- If csi-disk is selected, Access Mode must be set to ReadWriteOnce, that is, the volume can be mounted as read-write by only a single node.
- If csi-nas (file storage) or csi-obs (object storage) is selected, Access Mode must be set to ReadWriteMany. This means the volume can be mounted as read-write by multiple nodes.
Capacity (GiB)
The capacity of the created PVC cannot be less than 10 GiB.
Set this parameter only when csi-disk (EVS disk) or csi-nas (file storage) is selected. If csi-obs (object storage) is selected, the capacity is used on demand and does not need to be set.
Table 2 Parameters for adding a non-Huawei Cloud cluster Parameter
Description
Cluster
Select a non-Huawei Cloud cluster.
Storage Class
The storage classes supported by a cluster depend on the actual environment of the registered cluster. For details, see Storage Classes.
Access Mode
- ReadWriteOnce (RWO): The PVC can be mounted as read-write only by a single node.
- ReadWriteMany (RWX): The PVC can be mounted as read-write by multiple nodes.
Capacity (GiB)
The capacity of the created PVC cannot be less than 10 GiB.
Annotation
Set key and value and click Confirm. Annotations are attached to PVCs in the form of key-value pairs.
- The key and value can be added repeatedly to configure differentiated settings for each cluster.
- Click OK. After the PVC is successfully created, you can click the PVC name to view the details.
Related Operations
Operation |
Description |
---|---|
Creating a PVC from a YAML file |
Click Create from YAML in the upper right corner to create a PVC from an existing YAML file. |
Viewing details |
|
Viewing the YAML file |
Click View YAML next to the PVC name to view the YAML file of the current PVC. |
Update (Expanding a PVC) |
|
Deleting a PVC |
Choose More > Delete in the row where the target PVC resides, and click Yes. |
Deleting PVCs in batches |
|
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