February 2020
Intermediate to advanced
734 pages
38h 13m
English
Content preview from PostgreSQL 12 High Availability Cookbook - Third Edition
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How it works...
We begin by ensuring multiple popular libraries are available. After following so many recipes in this book, it's extremely likely that many (or even all) of these libraries are already installed. That said, it never hurts to be certain!
First in the list is Python's psycopg2 Postgres interface layer. Patroni uses this to connect to Postgres for various operations, and, because it is so commonly used, it's already packaged by our distribution. Python libraries tend to evolve extremely quickly, so this isn't always possible.
Next, we install pip, a Python-specific installation utility that can download and install Python packages from the Python Package Index (PyPI). This is very similar to the PostgreSQL Extension Network, ...
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