CNI Common Questions

1. Why did the CNI plugin upgrade fail?

1. Check if the node has set taints and prohibited scheduling (the default taint of the master node does not count). Nodes with taints need to choose to forcefully upgrade (which will not have special effects on the node).
2. If the forced upgrade fails, please click on ‘cni force upgrade’ again.
3. Execute the kubectl get pods -n kube-system |grep plugin-operation to find the associated plugin upgrade pod, and use describe pod to see the reason for the pod’s failure.

2. Why can’t my cluster connect to the external network?

UK8S uses VPC network for internal communication, and uses Genesis Cloud’s DNS by default. To use wget for external access, the VPC subnet must be configured with a NAT gateway. Go to the VPC product in the UK8S region, configure a NAT gateway for the specific subnet to allow cluster nodes to pull external data through the NAT gateway. For specific operations, refer to VPC Creation of NAT Gateway.