Install postgresql Server on centos7

yum install httpd php vim -y

yum install postgresql-server phpPgAdmin
postgresql-setup initdb
service postgresql start && chkconfig postgresql on

su postgres
psql
/passwd
^d ^d

vim /usr/share/phpPgAdmin/conf/config.inc.php
change $conf['extra_login_security'] = true; to  $conf['extra_login_security'] = false;
vim /var/lib/pgsql/data/pg_hba.conf
find line: local   all             all                                      peer
change to: local   all             all                                      md5
service postgresql restart