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. For details about the underlay network, see Cilium. |
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. For details about the underlay network, see Cilium. |
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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