Adding back the 1st master node back into the cluster after it was removed

Solution Verified - Updated -


  • Due to disk corruption, the 1st master node (as per in the inventory file) was forced to be removed from the cluster.

  • While trying to add back a new master node, it may cause a failure either with the or playbooks. The failure occurs during the step Generate the node client config.

failed: [ ->] ( => {
    "changed": true,
    "cmd": [
    "delta": "0:00:00.158849",
    "end": "2020-04-17 17:27:29.789575",
    "failed": true,
    "item": "",
    "rc": 1,
    "start": "2020-04-17 17:27:29.630726",
    "warnings": []


error: --signer-serial, "/etc/origin/master/ca.serial.txt" must be a valid file
See 'oc adm create-api-client-config -h' for help and examples.


  • Red Hat OpenShift Container Platform [OCP]
    • 3.11
    • 3.10

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