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Lab 3.2 node installation failed

Environment: AWS VPC with 2 medium large nodes (ubuntu 16.04 LTS)
Step 6 fails with:

[discovery] Trying to connect to API Server ""
[discovery] Created cluster-info discovery client, requesting info from ""
[discovery] Requesting info from "" again to validate TLS against the pinned public key
[discovery] Cluster info signature and contents are valid and TLS certificate validates against pinned roots, will use API Server ""
[discovery] Successfully established connection with API Server ""
[kubelet] Downloading configuration for the kubelet from the "kubelet-config-1.12" ConfigMap in the kube-system namespace
[preflight] Some fatal errors occurred:
    [ERROR FileAvailable--etc-kubernetes-bootstrap-kubelet.conf]: /etc/kubernetes/bootstrap-kubelet.conf already exists
    [ERROR FileAvailable--etc-kubernetes-pki-ca.crt]: /etc/kubernetes/pki/ca.crt already exists
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

Does anyone know what causes this?


  • owuowu Posts: 3

    Sorry, accidentally ran script twice. And fail to communicate with master is correct behaviour on LAB 3.2. No issue now. please close this post.

This discussion has been closed.