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

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Ceph – the architectural overview

The Ceph internal architecture is pretty straightforward, and we will learn about it with the help of the following diagram:

  • Ceph monitors (MON): Ceph monitors track the health of the entire cluster by keeping a map of the cluster state. They maintain a separate map of information for each component, which includes an OSD map, MON map, PG map (discussed in later chapters), and CRUSH map. All the cluster nodes report to monitor nodes and share information about every change in their state. The monitor does not store actual data; this is the job of the OSD.
  • Ceph object storage device (OSD): As soon as your ...

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