February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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The stack
At the end of this chapter, we will have a software stack that looks like the following diagram:
Each of the following layers represents one enhancement necessary for the best long-term high availability:
- The first LVM layer (starting at the storage) protects DRBD from inheriting device-specific block sizes and allows for online resizing or migration to new devices.
- The DRBD layer replicates data to another server for immediate use.
- The second LVM layer provides snapshot capabilities and other potentially useful LVM functionality to the filesystem.
- The XFS layer is the last element where data resides and is available for direct ...
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