Ubiquitous Cloud Native Service
Ubiquitous Cloud Native Service
- What's New
- Product Bulletin
- Service Overview
- Billing
- Getting Started
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User Guide
-
UCS Clusters
- Overview
- Huawei Cloud Clusters
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On-Premises Clusters
- Overview
- Service Planning for On-Premises Cluster Installation
- Registering an On-Premises Cluster
- Installing an On-Premises Cluster
- Managing an On-Premises Cluster
- Attached Clusters
- Multi-Cloud Clusters
- Single-Cluster Management
- Fleets
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Cluster Federation
- Overview
- Enabling Cluster Federation
- Using kubectl to Connect to a Federation
- Upgrading a Federation
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Workloads
- Workload Creation
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Container Settings
- Setting Basic Container Information
- Setting Container Specifications
- Setting Container Lifecycle Parameters
- Setting Health Check for a Container
- Setting Environment Variables
- Configuring a Workload Upgrade Policy
- Configuring a Scheduling Policy (Affinity/Anti-affinity)
- Configuring Scheduling and Differentiation
- Managing a Workload
- ConfigMaps and Secrets
- Services and Ingresses
- MCI
- MCS
- DNS Policies
- Storage
- Namespaces
- Multi-Cluster Workload Scaling
- Adding Labels and Taints to a Cluster
- RBAC Authorization for Cluster Federations
- Image Repositories
- Permissions
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Policy Center
- Overview
- Basic Concepts
- Enabling Policy Center
- Creating and Managing Policy Instances
- Example: Using Policy Center for Kubernetes Resource Compliance Governance
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Policy Definition Library
- Overview
- k8spspvolumetypes
- k8spspallowedusers
- k8spspselinuxv2
- k8spspseccomp
- k8spspreadonlyrootfilesystem
- k8spspprocmount
- k8spspprivilegedcontainer
- k8spsphostnetworkingports
- k8spsphostnamespace
- k8spsphostfilesystem
- k8spspfsgroup
- k8spspforbiddensysctls
- k8spspflexvolumes
- k8spspcapabilities
- k8spspapparmor
- k8spspallowprivilegeescalationcontainer
- k8srequiredprobes
- k8srequiredlabels
- k8srequiredannotations
- k8sreplicalimits
- noupdateserviceaccount
- k8simagedigests
- k8sexternalips
- k8sdisallowedtags
- k8sdisallowanonymous
- k8srequiredresources
- k8scontainerratios
- k8scontainerrequests
- k8scontainerlimits
- k8sblockwildcardingress
- k8sblocknodeport
- k8sblockloadbalancer
- k8sblockendpointeditdefaultrole
- k8spspautomountserviceaccounttokenpod
- k8sallowedrepos
- Configuration Management
- Traffic Distribution
- Observability
- Container Migration
- Pipeline
- Error Codes
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UCS Clusters
- Best Practices
-
API Reference
- Before You Start
- Calling APIs
-
API
- UCS Cluster
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Fleet
- Adding a Cluster to a Fleet
- Removing a Cluster from a Fleet
- Registering a Fleet
- Deleting a Fleet
- Querying a Fleet
- Adding Clusters to a Fleet
- Updating Fleet Description
- Updating Permission Policies Associated with a Fleet
- Updating the Zone Associated with the Federation of a Fleet
- Obtaining the Fleet List
- Enabling Fleet Federation
- Disabling Cluster Federation
- Querying Federation Enabling Progress
- Creating a Federation Connection and Downloading kubeconfig
- Creating a Federation Connection
- Downloading Federation kubeconfig
- 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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Storage/
Mounting a PV
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Mounting a PV
A PVC provides persistent storage management for containers in multiple clouds. The cloud storage can be mounted to containers based on actual requirements, ensuring high reliability of applications.
- 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
Mounting a PVC to a Cloud Storage Volume
- Set the basic container information by referring to Creating a Deployment, Creating a StatefulSet, or Creating a DaemonSet. After setting the basic container information, click Data Storage. On the PersistentVolumeClaims (PVCs) tab, click
.
Figure 1 Container storage configuration - Select the target PVC. If no PVC is available, click Create PVC. For details about related parameters, see Creating a PVC. Click OK.
- Set the container mount options.
- Set Mount Path to a path to which the data volume is mounted.
NOTICE:
- The container path cannot be a system directory, such as / or /var/run. Otherwise, the container may not function normally. Select an empty directory. If the directory is not empty, ensure that the directory does not contain any files that affect container startup. Otherwise, the files will be replaced, and the container cannot start normally. As a result, the workload may not be deployed.
- If a volume is mounted to a high-risk directory, use an account with minimum permissions to start the container. Otherwise, high-risk files on the host may be damaged.
- Set Subpath to a path of the data volume in the Kubernetes. It is the subpath of the volume instead of the root path. If this parameter is left blank, the root path is used.
- Set permissions.
- Read-only: You can only read the data in the mounted volume.
- Read-write: You can modify the volume mounted to the path. Newly written data will not be migrated if the container is migrated, which may cause data loss.
- Set Mount Path to a path to which the data volume is mounted.
- You can add multiple PVCs.
Parent topic: Storage
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