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User Guide
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UCS Clusters
- Overview
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On-Premises Clusters
- Overview
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Cluster Federation
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Container Settings
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Policy Center
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Policy Definition Library
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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
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- 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
-
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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kubeconfig of an On-Premises Cluster
Obtaining the kubeconfig of an On-Premises Cluster
A kubeconfig file can be used to organize information about clusters, users, namespaces, and authentication mechanisms. The kubectl command-line tool uses the kubeconfig file to find the information it needs to choose a cluster and communicate with the API server of the cluster.
You need to use ucs-ctl to obtain the kubeconfig file of an on-premises cluster.
- Use ucs-ctl to obtain the name of the on-premises cluster.
./ucs-ctl get cluster
- Use ucs-ctl to export the kubeconfig file of the on-premises cluster.
./ucs-ctl get kubeconfig -c test-redhat86 -o kubeconfig
NOTE:
You can run the ucs-ctl get kubeconfig -h command to view the following parameters in a kubeconfig file:
- -c, --cluster: specifies the name of the cluster whose kubeconfig file is to be exported.
- -e, --eip: specifies the EIP of the API server.
- -o, --output: specifies the name of the kubeconfig file.
Using the kubeconfig of an On-Premises Cluster
After obtaining the kubeconfig file generated by ucs-ctl, take the following steps to make this file take effect on the node:
- Copy the kubeconfig file to the node.
scp /local/path/to/kubeconfig user@remote:/remote/path/to/kubeconfig
- If environment variable EnableSecretEncrypt has been added, delete it first.
unset EnableSecretEncrypt
- Make the kubeconfig file take effect by using one of the following methods:
- Method 1: Copy the kubeconfig file to the default path.
mv /remote/path/to/kubeconfig $HOME/.kube/config
- Method 2: Specify KUBECONFIG as the environment variable.
export KUBECONFIG=/remote/path/to/kubeconfig
- Method 3: Specify kubeconfig in command lines.
kubectl --kubeconfig=/remote/path/to/kubeconfig
- Method 1: Copy the kubeconfig file to the default path.
After the preceding operations are performed, kubectl can communicate with the API server of the on-premises cluster. For details about how to use the kubeconfig file, see Organizing Cluster Access Using kubeconfig Files.
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