Troubleshooting monitors

Ceph monitor issues can usually be seen in the ceph status or ceph health detail command outputs, and they identify which monitor is reporting the issue. Ceph monitor logs are located at /var/log/ceph/ceph-mon.<node-name>.log, and this log can be investigated to determine the root cause of monitor failures or errors. The upcoming recipes will cover some common issues that can be seen in your Ceph cluster with monitors.

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...