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Hello. With default settings, k3s comes with traefik and klipper load balancer. You should see the related pods. k3s is lighter wrt drivers (storage/cloud drivers for different iaas, wich are/were packaged with vanilla k8s)

thank you for explanation. I have been fixed the problem, It might related to my country's Internet access policy. So I move to airgap installation method. it success as expected.