Type: string
Default: FILE:/etc/postgresql-common/krb5.keytab
Context: sighup
Restart: false

Sets the location of the server's Kerberos key file. The default is FILE:/usr/local/pgsql/etc/krb5.keytab (where the directory part is whatever was specified as sysconfdir at build time; use pg_config --sysconfdir to determine that). If this parameter is set to an empty string, it is ignored and a system-dependent default is used. This parameter can only be set in the postgresql.conf file or on the server command line. See gssapi-auth for more information.