Updated on 2024-01-26 GMT+08:00

Node and Container Network Check

Check Item

  • Check whether the nodes are running properly.
  • Check whether the node network is normal.
  • Check whether the container network is normal.

Procedure

The node status reflects whether the node component or network is normal.

Go to the CCE console and access the cluster console. Choose Nodes in the navigation pane. You can filter node status by status to check whether there are abnormal nodes.

The container network affects services. Check whether your services are available.

Solution

If the node status is abnormal, contact technical support.

If the container network is abnormal and your services are affected, contact technical support and confirm the abnormal network access path.

Source

Destination

Destination Type

Possible Fault

  • Pods (inside a cluster)
  • Nodes (inside a cluster)
  • Cloud servers outside the cluster but in the same VPC as the cluster
  • Outside the VPC to which the cluster belongs

Public IP address of Service ELB

Cluster traffic load balancing entry

No record.

Private IP address of Service ELB

Cluster traffic load balancing entry

No record.

Public IP address of ingress ELB

Cluster traffic load balancing entry

No record.

Private IP address of ingress ELB

Cluster traffic load balancing entry

No record.

Public IP address of NodePort Service

Cluster traffic entry

The kube proxy configuration is overwritten. This fault has been rectified in the upgrade process.

Private IP address of NodePort Service

Cluster traffic entry

No record.

ClusterIP Service

Service network plane

No record.

Non NodePort Service port

Container network

No record.

Cross-node pods

Container network plane

No record.

Pods on the same node

Container network plane

No record.

Service and pod domain names are resolved by CoreDNS.

Domain name resolution

No record.

External domain names are resolved based on the CoreDNS hosts configuration.

Domain name resolution

After CoreDNS is upgraded, the configuration is overwritten. This fault has been rectified in the add-on upgrade process.

External domain names are resolved based on the CoreDNS upstream server.

Domain name resolution

After CoreDNS is upgraded, the configuration is overwritten. This fault has been rectified in the add-on upgrade process.

External domain names are not resolved by CoreDNS.

Domain name resolution

No record.