- What's New
- Product Bulletin
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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
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- k8spsphostnetworkingports
- k8spsphostnamespace
- k8spsphostfilesystem
- k8spspfsgroup
- k8spspforbiddensysctls
- k8spspflexvolumes
- k8spspcapabilities
- k8spspapparmor
- k8spspallowprivilegeescalationcontainer
- k8srequiredprobes
- k8srequiredlabels
- k8srequiredannotations
- k8sreplicalimits
- noupdateserviceaccount
- k8simagedigests
- k8sexternalips
- k8sdisallowedtags
- k8sdisallowanonymous
- k8srequiredresources
- k8scontainerratios
- k8scontainerrequests
- k8scontainerlimits
- k8sblockwildcardingress
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- 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
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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?
-
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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Creating a ConfigMap
A ConfigMap is a type of resource that stores configuration information required by a workload. Its content is user-defined. After creating ConfigMaps, you can use them as files or environment variables in a workload.
ConfigMaps allow you to decouple configuration files from container images to enhance the portability of workloads.
ConfigMaps provide the following benefits:
- Manage configurations for different environments and services.
- Deploy workloads in different environments. Multiple versions are supported for configuration files so that you can update and roll back workloads easily.
- Quickly import configurations in the form of files to containers.
Creating a ConfigMap
- Access the cluster console. In the navigation pane, choose ConfigMaps and Secrets. Then, click the ConfigMaps tab. You can create a ConfigMap directly or using YAML. If you want to create a ConfigMap using YAML, go to 4.
- Select the namespace that the ConfigMap will belong to.
- Create a ConfigMap directly by clicking Create ConfigMap.
Configure the parameters as described in Table 1.
Table 1 Parameters for creating a ConfigMap Parameter
Description
Name
Name of the ConfigMap you create, which must be unique in a namespace.
Namespace
Namespace that the ConfigMap belongs to. The current namespace is used by default.
Description
Description of the ConfigMap.
ConfigMap Data
The workload configuration data can be used in a container or used to store the configuration data.
Click
and enter the key and value. Key indicates the configuration name, and Value indicates the configuration content.
NOTE:
ConfigMaps can be used to create workload storage volumes and configure workload environment variables. When configuring workload environment variables, ensure that the ConfigMap data is not empty.
Label
Labels are attached to objects such as workloads, nodes, and Services in key-value pairs.
Labels define the identifiable attributes of these objects and are used to manage and select the objects.
- Enter the key and value.
- Click Confirm.
- Create a ConfigMap from a YAML file by clicking Create from YAML.
NOTE:
To create a resource by uploading a file, ensure that the resource description file has been created. UCS supports files in JSON or YAML format. For details, see ConfigMap Resource File Configuration.
You can import or directly write the file content in YAML or JSON format. - When the configuration is complete, click OK.
The new ConfigMap is displayed in the ConfigMap list.
ConfigMap Resource File Configuration
A ConfigMap resource file can be in JSON or YAML format, and the file size cannot exceed 2 MB.
- JSON format
The file name is configmap.json and the configuration example is as follows:
{ "kind": "ConfigMap", "apiVersion": "v1", "metadata": { "name": "paas-broker-app-017", "namespace": "test" }, "data": { "context": "{\"applicationComponent\":{\"properties\":{\"custom_spec\":{}},\"node_name\":\"paas-broker-app\",\"stack_id\":\"0177eae1-89d3-cb8a-1f94-c0feb7e91d7b\"},\"softwareComponents\":[{\"properties\":{\"custom_spec\":{}},\"node_name\":\"paas-broker\",\"stack_id\":\"0177eae1-89d3-cb8a-1f94-c0feb7e91d7b\"}]}" } }
- YAML format
Related Operations
Operation |
Description |
---|---|
Viewing details |
Click the ConfigMap name to view its details. |
Editing a YAML file |
Click Edit YAML in the row where the target ConfigMap resides to edit its YAML file. |
Updating a ConfigMap |
|
Deleting a ConfigMap |
Click Delete in the row where the target ConfigMap resides, and click Yes. |
Deleting ConfigMaps in batches |
|
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