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Mastering Proxmox

You're reading from   Mastering Proxmox Master Proxmox VE to effectively implement server virtualization technology within your network

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Product type Paperback
Published in Jul 2014
Publisher
ISBN-13 9781783980826
Length 310 pages
Edition 1st Edition
Tools
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Author (1):
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Wasim Ahmed Wasim Ahmed
Author Profile Icon Wasim Ahmed
Wasim Ahmed
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Toc

Table of Contents (12) Chapters Close

Preface 1. Dive into the Virtual World with Proxmox FREE CHAPTER 2. Proxmox Under the Hood 3. Shared Storages with Proxmox 4. A Virtual Machine for a Virtual World 5. Network of Virtual Networks 6. Proxmox HA – Zero Downtime 7. High Availability Storage for High Availability Cluster 8. Proxmox Production Level Setup 9. Proxmox Troubleshooting 10. Putting It All Together Index

The Ceph components


Before we dive in, let's take a look at some key components that make up a Ceph cluster.

Physical node

A physical node is the actual server hardware that holds Object Storage Daemon (OSDs), monitors, and MDSs.

Maps

In Ceph, maps hold information such as a list of participating nodes in a cluster and their locations, data paths, and a list of OSDs with certain data chunks. There are several maps in a Ceph cluster: a cluster map, OSD map for a list of OSDs, monitor map for known monitor nodes, Placement Group (PG) map for the location of objects or data chunks, and a CRUSH map to determine the storage and retrieval of data by computing the data storage location.

Cluster map

A cluster map is a map of devices and buckets that comprise a Ceph cluster. Ceph uses a bucket hierarchy to define nodes or node locations, such as a room, rack, shelf, and host. For example, let's say there are four disk drives used as four OSDs in the following bucket hierarchy:

In the previous example, osd...

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