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Kuberenetes Cluster IP address changed and cant connect with kubectl


Kuberenetes Cluster IP Address changed and kubectl management utility can’t connet



Run the following commands in order to fix the utility

systemctl stop kubelet docker
cd /etc/
mv kubernetes kubernetes-backup
mv /var/lib/kubelet /var/lib/kubelet-backup
mkdir -p kubernetes
cp -r kubernetes-backup/pki kubernetes
rm kubernetes/pki/{apiserver.*,etcd/peer.*}
systemctl start docker
kubeadm init –ignore-preflight-errors=DirAvailable–var-lib-etcd
cp kubernetes/admin.conf ~/.kube/config
kubectl get nodes –sort-by=.metadata.creationTimestamp
kubectl delete node $(kubectl get nodes -o jsonpath='{.items[(@.status.conditions[0].status==”Unknown”)]}’)
kubectl get pods –all-namespaces



if you see one of the following errors:
“error execution phase preflight: [preflight] Some fatal errors occurred:
[ERROR FileAvailable–etc-kubernetes-kubelet.conf]: /etc/kubernetes/kubelet.conf already exists
[ERROR Port-10250]: Port 10250 is in use
[ERROR FileAvailable–etc-kubernetes-pki-ca.crt]: /etc/kubernetes/pki/ca.crt already exists”

Run “kubeadm reset” on all nodes

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