一、yum安裝

1、安裝yum倉庫

# yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

2、安裝client、server

# yum install postgresql96

# yum install postgresql96-server

# rpm -qa|grep postgresql
postgresql96-9.6.16-2PGDG.rhel7.x86_64
postgresql96-libs-9.6.16-2PGDG.rhel7.x86_64
postgresql96-server-9.6.16-2PGDG.rhel7.x86_64

3、初始化數據庫

# /usr/pgsql-9.6/bin/postgresql96-setup initdb
# systemctl enable postgresql-9.6
# systemctl start postgresql-9.6

4、配置

注意：所有的配置文件修改都需要重啟數據庫

4.1、修改用戶名密碼

# su - postgres
-bash-4.2$ psql -U postgres
postgres=# alter user postgres with password 'postgres'

4.2、允許遠程訪問

# vim /var/lib/pgsql/9.6/data/postgresql.conf
修改#listen_addresses = 'localhost'  為  listen_addresses='*'

4.3、信任遠程服務器連接

# egrep -v "^$|*#" /var/lib/pgsql/9.6/data/pg_hba.conf
local   all             all                                     peer
host    all             all             127.0.0.1/32            ident
host    all             all             192.168.0.0/16          trust
host    all             all             ::1/128                 ident

4.4、修改數據目錄

# vim /var/lib/pgsql/9.6/data/postgresql.conf
data_directory = '/app_server/pgdata'
# mkdir /app_server/pgdata
# chown postgres postgres /app_server/pgdata
# chmod 700 /app_server/pgdata
# systemctl restart postgresql-9.6

二、rpm安裝

# centos7.5
url: https://yum.postgresql.org/9.6/redhat/rhel-7.5-x86_64/
# 自行下載安裝
# yum install -y ...

其他步驟如上喲！