- What's New
- Product Bulletin
- Service Overview
- Billing
- Getting Started
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User Guide
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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
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- k8srequiredresources
- k8scontainerratios
- k8scontainerrequests
- k8scontainerlimits
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- 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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RBAC Authorization for Cluster Federations
UCS allows you to perform refined permissions management by federation based on Huawei Cloud IAM. You can also create native Kubernetes RBAC resources in a federation for the refined management of federation access permissions.
Precautions
- The permissions management of UCS and the RBAC authorization of a cluster federation do not affect each other. When UCS APIs are called, the permissions management takes effect. If the kubeconfig file is used to perform operations on a federation, the RBAC authorization takes effect.
- RBAC resources created in the cluster federation and member clusters are unaware of and do not affect each other. The RBAC permissions configured through the cluster federation entry take effect only when the federation is directly accessed. When a member cluster is directly accessed, only the RBAC permissions for the member cluster take effect.
- You need to assign permissions and roles (such as ClusterRole and ClusterRoleBinding) with caution for fine-grained authorization. Do not assign the permission to view resources to namespaces prefixed with Karmada-. Role and RoleBinding are recommended for assigning permissions to resources in specified namespaces.
Cluster Federation RBAC Authorization
The UCS cluster federation uses the native RBAC authentication mode of Kubernetes. You can create RBAC resources to assign federation access permissions to IAM users.
- Download and configure the kubeconfig file as an IAM user with the Tenant Administrator permission. For details, see Using kubectl to Connect to a Federation.
- Save the following content to the list-deploy.yaml file:
apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: list-deploy-role-binding namespace: default roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: list-deploy-role subjects: - apiGroup: rbac.authorization.k8s.io kind: User name: <user-id> # IAM user ID - apiGroup: rbac.authorization.k8s.io kind: Group name: <group-id> # IAM user group ID --- apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: list-deploy-role namespace: default rules: - apiGroups: - apps resources: - deployments verbs: - list - get
Replace <user-id> with the IAM user ID and <group-id> with the IAM user group ID. For details about the fields in RoleBinding and Role, see Using RBAC Authentication.
Run the following command to create the resources:kubectl apply -f list-deploy.yaml
The IAM user specified by <user-id> or IAM users in the group specified <group-id> can run the following command to view the Deployments in the default namespace:kubectl get deploy -n default
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