I followed -- https://www.virtualizationhowto.com/2023/12/how-to-install-kubernetes-in-ubuntu-22-04-with-kubeadm/
Everything worked on the Master node. Kubeadm reported them joining OK, but a "kubectl get nodes" showed a problem and getting refused locally. " sudo systemctl status containerd" shows things running on all 3 servers. What are the next steps to diagnose?
(Part of the issue may be that it is sometimes unclear what gets run where. Steps 1-6, 10 I ran on all 3 nodes. Steps 7,9 I ran only on the master and step 8 I only ran on the workers. )
# kubeadm join 192.168.50.150:6443 --token 3gfszc.22zm36h111181qww \ --discovery-token-ca-cert-hash sha256:522db419b63f19712b7343f0911111ed7096611111d9c2ae1a81e13c47001f1b [preflight] Running pre-flight checks [preflight] Reading configuration from the cluster... [preflight] FYI: You can look at this config file with 'kubectl -n kube-system get cm kubeadm-config -o yaml' [kubelet-start] Writing kubelet configuration to file "/var/lib/kubelet/config.yaml" [kubelet-start] Writing kubelet environment file with flags to file "/var/lib/kubelet/kubeadm-flags.env" [kubelet-start] Starting the kubelet [kubelet-start] Waiting for the kubelet to perform the TLS Bootstrap... This node has joined the cluster: * Certificate signing request was sent to apiserver and a response was received. * The Kubelet was informed of the new secure connection details. Run 'kubectl get nodes' on the control-plane to see this node join the cluster. # kubectl get nodes E1227 14:47:43.963214 8374 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused E1227 14:47:43.963950 8374 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused E1227 14:47:43.965704 8374 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused E1227 14:47:43.967500 8374 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused E1227 14:47:43.969408 8374 memcache.go:265] couldn't get current server API group list: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused The connection to the server localhost:8080 was refused - did you specify the right host or port?
