部分核心操作
chown pgsql:pgsql /root/pgsql
/usr/local/etc/rc.d/postgresql initdb
/usr/local/etc/rc.d/postgresql start
psql -U pgsql postgres
alter user postgres with password ‘pwd’
http://www.vker.org/articles/2015/9/18/5706076589ed58c50fe5cb6212b897cd.html
原文：http://quchenyong.blog.51cto.com/10723570/1696189