README POSTGRESQL ================= UPGRADING FROM A PREVIOUS VERSION --------------------------------- If upgrading from a non-compatible version (ie 8.0.x >> 8.1.x) be sure to dump the databases before upgrading and restore them later. Example: (for your convenience, there could be better ways to achieve this) # pg_dumpall -U postgres > pg.dump # /etc/rc.d/postgresql stop # mv /var/pgsql/data /var/pgsql/data-backup # mkdir /var/pgsql/data # chown postgres /var/pgsql/data # su - postgres # initdb -D /var/pgsql/data # exit # /etc/rc.d/postgresql start # psql -U postgres -f pg.dump postgres Do not forget to update / copy old config files to /var/pgsql/data NEW INSTALL ----------- To complete the installation and create a test database you need to do some additional steps: # useradd postgres # passwd -l postgres # mkdir -p /var/pgsql/data # touch /var/log/postgresql # chown postgres /var/pgsql/data /var/log/postgresql # su - postgres # initdb -D /var/pgsql/data # exit # /etc/rc.d/postgresql start # su - postgres # createdb test # psql test edit /etc/cron/weekly as root and add a line "/usr/sbin/rotatelog postgresql" The complete installation instructions are located here: http://www.postgresql.org/docs/current/interactive/installation.html