$PGDATA/pg_ident.con, $PGDATA/pg_hba.conf, $PGDATA/postgresql.conf The PGDATA environment variable is used to distinguish database clusters from one another by setting it to the value of the directory which contains the cluster desired. The three configuration files exist in every PGDATA/ directory. Details on the format of the files and the options that can be set in each can be found in . Create the boot script with the following: cat > /etc/rc.d/init.d/postgresql << "EOF" #!/bin/sh # Begin $rc_base/init.d/postgresql # Based on sysklogd script from LFS-3.1 and earlier. # Rewritten by Gerard Beekmans - gerard@linuxfromscratch.org . /etc/sysconfig/rc . $rc_functions case "$1" in start) echo "Starting PostgreSQL daemon..." su - postgres -c '/usr/bin/pg_ctl start -W -D /var/pgsql/data \ -l /var/pgsql/data/logfile -o "-i" ' evaluate_retval ;; stop) echo "Stopping PostgreSQL daemon..." /usr/bin/pg_ctl stop -m smart -D /var/pgsql/data evaluate_retval ;; restart) $0 stop sleep 1 $0 start ;; status) /usr/bin/pg_ctl status -D /var/pgsql/data ;; *) echo "Usage: $0 {start|stop|restart|status}" exit 1 ;; esac # End $rc_base/init.d/ EOF chmod 755 /etc/rc.d/init.d/postgresql Create the symbolic links to this file in the relevant rc.d directory with the following commands: cd /etc/rc.d/init.d && ln -sf ../init.d/postgresql ../rc0.d/K26postgresql && ln -sf ../init.d/postgresql ../rc1.d/K26postgresql && ln -sf ../init.d/postgresql ../rc2.d/K26postgresql && ln -sf ../init.d/postgresql ../rc3.d/S34postgresql && ln -sf ../init.d/postgresql ../rc4.d/S34postgresql && ln -sf ../init.d/postgresql ../rc5.d/S34postgresql && ln -sf ../init.d/postgresql ../rc6.d/K26postgresql