postgresql centos安装

参考：https://www.postgresql.org/download/linux/redhat/

• Install the repository RPM:yum install https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7-x86_64/pgdg-centos10-10-1.noarch.rpm
• Install the client packages:yum install postgresql10
• Optionally install the server packages:yum install postgresql10-server
• Optionally initialize the database and enable automatic start:
• /usr/pgsql-10/bin/postgresql-10-setup initdb
systemctl enable postgresql-10
systemctl start postgresql-10

修改密码：

su postgres
psql
ALTER USER postgres WITH PASSWORD '123456';
\q
su root 

修改PostgresSQL数据库配置实现远程访问

①、修改postgresql.conf 文件：

vi /var/lib/pgsql/10/data/postgresql.conf

将listen_addresses前的#去掉，并将 listen_addresses = 'localhost' 改成 listen_addresses = '*'； 
②、修改客户端认证配置文件pg_hba.conf，将需要远程访问数据库的IP地址或地址段加入该文件。

vi /var/lib/pgsql/10/data/pg_hba.conf

将IPv4区下的127.0.0.1/32修改为0.0.0.0/0； 将ident修改为md5 
③、重启服务使设置生效

systemctl restart postgresql-10