When the node is added to the master of kubeletes, an error is reported. kubeletesmaster

When the node is added to the master of kubeletes, an error is reported. kubeletesmaster

When a node is added to the master of kubeletes, the following error is reported:

[Preflight] Running pre-flight checks. [WARNING FileExisting-crictl]: crictl not found in system path [preflight] Some fatal errors occurred: [ERROR Port-10250]: port 10250 is in use [ERROR DirAvailable -- etc-kubernetes-manifests]:/etc/kubernetes/manifests is not empty [ERROR FileAvailable -- etc-kubernetes-pki-ca.crt]: /etc/kubernetes/pki/ca. crt already exists [ERROR FileAvailable -- etc-kubernetes-kubelet.conf]:/etc/kubernetes/kubelet. conf already exists [preflight] If you know what you are doing, you can make a check non-fatal with '-- ignore-preflight-errors =...'

Solution:

Run the following command on the node to clear the kubeadm operation, and then run the join command again:

Kubeadm reset