cluster join : connection refused

[jimkapolos]

I have an AMD64 server as hub-clsuter and I want to join a ARM64 node (rpi/jetson nano) as manager-cluster with the clusteradm join command.
I execute this command:
clusteradm join --hub-token eyJhbGciOiJSUzI1NiIsImtpZCI6ImxDVTBYZzBQUTlRNnUzSG9wUUFXdW93ZFlicG9w --hub-apiserver https://192.168.188.205:6443 --cluster-name cluster-worker2
And I get the following error:
Error: Get "http://localhost:8080/apis/apps/v1/namespaces/open-cluster-management/deployments/klusterlet": dial tcp 127.0.0.1:8080: connect: connection refused

Also when I run the same command from another AMD64 machine it runs normally.

Do you have any clue why this goes wrong?

[zhujian7]

It looks like a network issue, can your managed cluster access the hub https://192.168.188.205:6443?
Are you using KinD clusters?(if the managed cluster is a kind, please add --force-internal-endpoint-lookup for the join command)
Please give more details about the difference between the two clusters one runs the command normally and the other fails.

[jimkapolos]

I have k3s on both machines but on the machine with amd64 the clusteradm join is running while on the machine with arm64 I get the same: Error: Get "http://localhost:8080/apis/apps/v1/namespaces/open-cluster-management/deployments/klusterlet": dial tcp 127.0.0.1:8080: connect: connection refused

I tampered with the k3s.yaml of the ARM64 machine I put the external ip and not the localhost and enabled the clusteradm join but now the problem I got is that when I go to the cluster hub to do clusterdm accept I get the following error:
Error: [managedclusters.cluster.open-cluster-management.io "cluster-worker2" not found, no csr is approved yet for cluster cluster-worker2]