November 2019
Beginner to intermediate
470 pages
11h 59m
English
Content preview from Mastering PostgreSQL 12 - Third Edition
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Using environment variables
One way to pass all kinds of parameters is to use environment variables. If information is not explicitly passed to pg_dump, it will look for the missing information in predefined environment variables. A list of all potential settings can be found at https://www.postgresql.org/docs/11/static/libpq-envars.html.
The following overview shows some of the environment variables that are commonly needed for backups:
- PGHOST: This tells the system which host to connect to.
- PGPORT: This defines the TCP port to be used.
- PGUSER: This tells a client program about the desired user.
- PGPASSWORD: This contains the password to be used.
- PGDATABASE: This is the name of the database to connect to.
The advantage of these environments ...
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