- What's New
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User Guide
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UCS Clusters
- Overview
- Huawei Cloud Clusters
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On-Premises Clusters
- Overview
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Cluster Federation
- Overview
- Enabling Cluster 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
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- Configuring a Workload Upgrade Policy
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- Configuring Scheduling and Differentiation
- Managing a Workload
- ConfigMaps and Secrets
- Services and Ingresses
- MCI
- MCS
- DNS Policies
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- Adding Labels and Taints to a Cluster
- RBAC Authorization for Cluster Federations
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Policy Center
- Overview
- Basic Concepts
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- Creating and Managing Policy Instances
- Example: Using Policy Center for Kubernetes Resource Compliance Governance
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Policy Definition Library
- Overview
- k8spspvolumetypes
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- 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
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- Pipeline
- Error Codes
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UCS Clusters
- Best Practices
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API Reference
- Before You Start
- Calling APIs
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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
-
FAQs
- About UCS
-
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
-
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
-
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
-
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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Overview
You can configure a storage class in the Add Container step of creating a workload.
Local Storage
You can mount the file directory of the host where a container is located to a specified container path (corresponding to hostPath in Kubernetes). Alternatively, you can leave the source path empty (corresponding to emptyDir in Kubernetes). If the source path is left empty, a temporary directory of the host will be mounted to the mount point of the container. A specified source path is used when data needs to be persistently stored on the host, while emptyDir is used when temporary storage is needed. A ConfigMap is a type of resource that stores configuration information required by a workload. Its content is user-defined. A secret is a type of resource that holds sensitive data, such as authentication and key information, required by a workload. Its content is user-defined. For details, see Mounting a Local Volume.
PVCs
You can create persistent volumes and mount them to a container path. When containers are migrated, the cloud storage is mounted to new containers to ensure data reliability. For details, see Mounting a PV. You are advised to select PVCs when creating a workload and store pod data on the corresponding cloud storage. If you store pod data on a local volume and a fault occurs on the node, the data cannot be restored.
- UCS can automatically create EVS, OBS, and SFS volumes and mount them to the container path of a Huawei Cloud cluster.
- EVS offers scalable block storage with high reliability, high performance, and extensive specifications for containers. EVS stores binary data and cannot store files directly. This storage class is applicable when data needs to be stored permanently.
- SFS provides high-performance file storage (NAS) that can be expanded on demand. It provides shared file access for containers and is used for persistent storage in ReadWriteMany scenarios, including media processing, content management and web services, and big data and application analysis.
- OBS provides unlimited storage capacity for objects/files in any format. It is mainly designed for scenarios involving storage and analysis of massive data, query of historical data details, analysis on a large number of behavior logs, and statistical analysis on public transactions.
- When a non-Huawei Cloud cluster uses a PVC to mount cloud storage, the cluster provider must support StorageClasses. For details, see Storage Classes.
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