February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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Figuring out what to monitor
Modern servers have a lot of active hardware and software that can stop working at any time. A failure can start with the operating system, storage, database, network connectivity, heat, or several other sources.
So, which elements do we rank highest to ensure system availability? Which hardware needs the closest monitoring? What kind of tests should we use to ensure that the software is operating as expected?
When dedicating monitoring resources to check hardware and software, we must answer several questions to distribute effort efficiently. Every test takes time, uses network resources, and must save its results to a status file or another database. If our system checks are too frequent or numerous, we could ...
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