- 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
- 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
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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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UCS Permissions
UCS works with IAM to allow you to grant UCS resource permissions to IAM users under your account, so that the permissions of departments or projects can be isolated based on permission policies and fleets.
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UCS Permission Types
UCS provides refined permission management based on the role access control (RBAC) capability of IAM and Kubernetes. Permission control can be implemented by UCS service resource and Kubernetes resource in a cluster. The two permission types apply to different resource types and are granted using different methods.
- UCS resource permissions are granted based on the system policies of IAM. UCS resources include container fleets, clusters, and federation instances. Administrators can grant different permissions to different user roles (such as development and O&M) to control their use of UCS resources.
- Kubernetes resource permissions in a cluster are granted based on the Kubernetes RBAC capability. Refined permissions can be granted to Kubernetes resource objects in a cluster. With permission setting, the permissions for performing operations on different Kubernetes resource objects (such as workloads, jobs, and services) will vary with users.
UCS permissions apply to three phases: creating and managing infrastructure resources in the first phase, that is, creating container fleets, registering clusters, and enabling cluster federation; using cluster Kubernetes resource objects (such as workloads and services) in the second phase; O&M infrastructure resources and Kubernetes resources in the third phase. In the first and third phases, UCS resource permissions are granted following the IAM system policies on the IAM console. In the second phase, Kubernetes resource permission policies are created by the administrator on the Permissions page of the UCS console, and are associated with specific fleets or clusters on the Fleets page.
Permission Management Flow
The following figure shows the permissions management flow of a new IAM user.
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Basic Concepts
Figure 3 shows the relationships between the following basic concepts:
- User: You can use your administrator account to create IAM users and grant permissions on specific resources. Each IAM user has their own identity credentials (password and access keys) and uses cloud resources based on granted permissions.
- User group: You can use user groups to grant permissions to IAM users. IAM users added to a user group automatically obtain the permissions granted to the group. For example, after the administrator grants the UCS FullAccess permission to a user group, users in the user group have the administrator permissions of UCS. If a user is added to multiple user groups, the user inherits the permissions granted to all these groups.
- Permissions: The UCS administrator defines the scope of operations performed by one or more users on Kubernetes resources in a cluster. UCS presets several common permission types, including Admin, Viewer, and Developer, and supports custom permissions. For details, see Creating a Permission Policy.
- Fleet: A fleet contains multiple clusters. An administrator can use fleets to classify associated clusters. An administrator can also use a fleet for the unified management of multiple clusters, including permissions management, security policy configuration, configuration management, and multi-cluster orchestration. Fleets and permissions are in a many-to-many relationship. That is, a permission policy can be associated with multiple fleets, and a fleet can be associated with multiple permission policies.
Constraints
- An on-premises cluster can use the Huawei Cloud IAM token to access kube-apiserver, and does not identify the system policies (UCS FullAccess, UCS CommonOperations, UCS CIAOperations, and UCS ReadOnlyAccess) of UCS.
- Multi-cloud clusters can only be registered using a Huawei Cloud account. Cluster registration through IAM system policies is not supported.
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