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Worker node can't join

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Posts: 207
in LFS258 Class Forum

Hello,
The worker node gets a timeout when trying to join the cluster. The CP node seems up and running.
Here the worker output:

  1. Failed to request cluster-info, will try again: 
  2. Get "https://k8scp:6443/api/v1/namespaces/kube-public/configmaps/cluster-info?timeout=10s": 
  3. x509: certificate is valid for dl-dt-03, kubernetes, kubernetes.default, kubernetes.default.svc, 
  4. kubernetes.default.svc.cluster.local, not k8scp

Any idea what goes wrong? The full output is here: https://x0.at/M_i_.txt

Comments

  • Posts: 207

    On the CP node, the /etc/hosts file is:

    1. $ cat /etc/hosts
    2. 127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
    3. ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
    4. 172.168.1.6          LN-TW-01.resuniv.lan LN-TW-01
    5. 172.168.1.7          HP-TW-01.resuniv.lan HP-TW-01
    6. 172.167.1.254        DL-DT-03.resuniv.lan DL-DT-03
    7. 172.167.1.254   k8scp

    there's a typo on the 167, I guess it was it

  • Posts: 207

    Fixed:

    1. # kubeadm reset
    2. # rm -rf /var/lib/etcd/
    3. # kubeadm init --config=kubeadm-config.yaml --upload-certs | tee kubeadm-init.out

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