May 2019
Intermediate to advanced
600 pages
20h 46m
English
book
PostgreSQL 11 Administration Cookbook
by Simon Riggs, Gianni Ciolli, Sudheer Kumar Meesala, Sheldon Strauch
Content preview from PostgreSQL 11 Administration Cookbook
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How it works…
The pg_hba.conf file is where we specify the host-based authentication rules. We do not specify the authentications themselves; just specify which authentication mechanisms will be used. This is the top-level set of rules for PostgreSQL authentication. The rules are specified in a file and applied by the postmaster process when connections are attempted. To prevent denial-of-service attacks, the HBA rules never involve database access, so we do not know whether a user is a superuser. As a result, you can lock out all users, but note that you can always re-enable access by editing the file and reloading.
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