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Cluster Federation
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Workloads
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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
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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
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- Updating Fleet Description
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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?
-
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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Configuring the Multi-Cluster Networking
Before creating an MCS object, ensure connectivity of both inter-cluster nodes and containers.
Check the connectivity by referring to Table 1. If the network between nodes or containers is not connected, connect them. If they still cannot be connected, rectify the fault by referring to FAQ.
Inter-Cluster Network |
How to Check |
How to Connect |
---|---|---|
Node connectivity |
Ping the IP address of a node in cluster B from cluster A. If the ping succeeds, the node connectivity is normal. |
|
Container connectivity |
Use cURL to access a pod in cluster B from cluster A. If the access succeeds, the container connectivity is normal. |
Cluster Network Types
Cluster Type |
Cluster Subtype |
Network Type |
Support Underlay Network |
---|---|---|---|
Huawei Cloud clusters |
CCE clusters |
Container tunnel network |
No |
VPC network |
Yes |
||
CCE Turbo clusters |
Cloud native network 2.0 |
Yes |
|
On-premises clusters |
On-premises clusters |
Overlay and underlay networks The overlay network is used by default. You need to manually enable the underlay network. |
Yes |
Multi-cloud clusters |
Multi-cloud clusters |
Overlay and underlay networks The overlay network is used by default. You need to manually enable the underlay network. |
Yes |
Attached clusters |
Attached clusters |
Unknown |
Network type–based |
FAQ
If nodes or containers in different clusters cannot access each other, check the items listed in the following table.
Check Item |
Fault Locating |
Solution |
---|---|---|
Whether the cluster version is v1.21 or later |
Access the cluster details page. |
Upgrade the cluster. For details, see Upgrading a Cluster. |
Whether clusters can be accessed over an underlay network |
Check this item by referring to Table 2. |
Configure the network type by referring to Table 2. |
Whether CIDR blocks overlap in the routes of the VPC peering connection |
Go to the VPC peering connection details page. |
Modify the overlapped CIDR blocks. |
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