Just checked the status of kubelet.service.
Mostly this issue occurs when this service does not enable on boot. PFB.
[root@ip-297-49-42-100 ~]# kubectl get node
The connection to the server 297.49.42.100:6443 was refused - did you specify the right host or port?
[root@ip-297-49-42-100 ~]# systemctl status kubelet.service
Display all 494 possibilities? (y or n)
[root@ip-297-49-42-100 ~]# systemctl status kubelet.service
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; disabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: inactive (dead)
Docs: https://kubernetes.io/docs/
[root@ip-297-49-42-100 ~]# systemctl start kubelet.service
[root@ip-297-49-42-100 ~]# systemctl status kubelet.service
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/usr/lib/systemd/system/kubelet.service; disabled; vendor preset: disabled)
Drop-In: /usr/lib/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: active (running) since Mon 2020-04-20 14:24:34 UTC; 2s ago
Docs: https://kubernetes.io/docs/
Main PID: 5115 (kubelet)
Tasks: 14
Memory: 94.1M
CGroup: /system.slice/kubelet.service
└─5115 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet…
Apr 20 14:24:35 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: W0420 14:24:35.882212 5115 pod_container_deletor.go…ners
Apr 20 14:24:35 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: I0420 14:24:35.882289 5115 kubelet_node_status.go:2…tach
Apr 20 14:24:35 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: I0420 14:24:35.900996 5115 kubelet_node_status.go:2…tach
Apr 20 14:24:35 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: W0420 14:24:35.919094 5115 pod_container_deletor.go…ners
Apr 20 14:24:35 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: E0420 14:24:35.936701 5115 kubelet.go:2267] node "i…ound
Apr 20 14:24:36 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: W0420 14:24:36.014904 5115 status_manager.go:556] Faile…
Apr 20 14:24:36 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: E0420 14:24:36.036878 5115 kubelet.go:2267] node "i…ound
Apr 20 14:24:36 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: E0420 14:24:36.136972 5115 kubelet.go:2267] node "i…ound
Apr 20 14:24:36 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: E0420 14:24:36.214917 5115 kubelet_node_status.go:9…used
Apr 20 14:24:36 ip-297-49-42-100.us-east-2.compute.internal kubelet[5115]: E0420 14:24:36.237347 5115 kubelet.go:2267] node "i…ound
Hint: Some lines were ellipsized, use -l to show in full.
[root@ip-297-49-42-100 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
ip-297-49-42-100.us-east-2.compute.internal NotReady master 65m v1.18.2
[root@ip-297-49-42-100 ~]# systemctl enable kubelet.service
Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
[root@ip-297-49-42-100 ~]#