Edit Postgresql configuration without restart of database

Postgresql common configuration files are the postgresql.conf and pg_hba.conf. In many cases, its possible to edit without the need to restart the database. Here are the 2 options on  Centos Linux;

Use systemctl

# systemctl reload postgresql-11

or

# systemctl reload postgresql

Within Postgresql

Login and and access psql as admin or user postgres then run this sql.

SELECT pg_reload_conf();