Install postgresql9.4 in CentOS 6.7

1. download the correct RPM from the repository RPM listing
yum install http://yum.postgresql.org/9.4/redhat/rhel-6-x86_64/pgdg-redhat94-9.4-1.noarch.rpm

2. proceed to install and update packages

yum install postgresql94-server postgresql94-contrib
service postgresql-9.4 initdb
chkconfig postgresql-9.4 on

3. 初始化数据库报错
# service postgresql initdb

4. 初始化方法
# mkdir -p /var/lib/pgsql/data
# chown postgres.postgres /var/lib/pgsql/data
# su - postgres
$ initdb -E UTF-8 -D /var/lib/pgsql/data --locale=en_US.UTF-8 -U postgres -W //初始化数据库

5. 修改/var/lib/pgsql/data/postgresql.conf
listen_addresses = '*' //监听所有ip的连接，默认是本机
port = 5432 //这个不开也行，默认就是5432端口

6. 修改/var/lib/pgsql/data/pg_hba.conf

# TYPE DATABASE USER CIDR-ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all trust
# IPv4 local connections:
host all all 127.0.0.1/32 md5
host all all 0.0.0.0/0 md5 //所有IP和用户，密码对都可以连接
# IPv6 local connections:
host all all ::1/128 md5

7. 启动并查看
# /etc/init.d/postgresql start //启动
# netstat -tpnl |grep 5432

8. 用postgres用户登录，并改密码

[root@rudder data]# su postgres //切换用户
bash-3.2$ psql -U postgres //连接pgsql server
Welcome to psql 8.1.23,the Postgresql interactive terminal.

Type: \copyright for distribution terms
\h for help with sql commands
\? for help with psql commands
\g or terminate with semicolon to execute query
\q to quit

postgres=# Alter USER postgres WITH PASSWORD '***密码**'; //添加密码
ALTER ROLE //出现这个才算成功，第一次操作没成功，pgadmin连不上
postgres-# \q //退出

9. pgadmin客户端工具连接pgsql serverhttp://www.pgadmin.org/download/windows.PHP