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Ceph Cookbook - Second Edition by Karan Singh, Michael Hackett, Vikhyat Umrao

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How to do it...

Let's take a look at some of the most common monitor errors and some steps on how to resolve these issues:

  1. Ceph monitor is reporting a clock skew:
    • Clock skew can be reported in the monitor log file as well as in the ceph status command.
    • This error indicates that the monitor reporting the clock skew error has a clock that is not synchronized with the rest of the monitors in the cluster.
    • This error is usually due to improper NTP configuration or no NTP server running on the monitor node.
    • Network issues can also lead to clock skew errors. Follow the recipe in the previous section for proper NTP investigation and network troubleshooting.
  2. Ceph monitor is reported as out of quorum:
    • Out of quorum can be reported in the monitor ...

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