PostgreSQL 12 安装

2、安装客户端软件包

<span style="color: #0000ff;">yum</span> <span style="color: #0000ff;">install</span> postgresql12

3、安装服务端软件包（可选）

<span style="color: #0000ff;">yum</span> <span style="color: #0000ff;">install</span> postgresql12-server

4、初始化数据库并启用自动启动

/usr/pgsql-<span style="color: #800080;">12</span>/bin/postgresql-<span style="color: #800080;">12</span>-<span style="color: #000000;">setup initdb
systemctl enable postgresql</span>-<span style="color: #800080;">12</span><span style="color: #000000;">
systemctl start postgresql</span>-<span style="color: #800080;">12</span>

5、配置防火墙

firewall-cmd --permanent --add-port=<span style="color: #800080;">5432</span>/<span style="color: #000000;">tcp  
firewall</span>-cmd --permanent --add-port=<span style="color: #800080;">80</span>/<span style="color: #000000;">tcp  
firewall</span>-cmd --reload  

6、修改用户密码

#切换用户，执行后提示符会变为 <span style="color: #800000;">‘</span><span style="color: #800000;">-bash-4.2$</span><span style="color: #800000;">‘</span>
   <span style="color: #0000ff;">su</span> -<span style="color: #000000;"> postgres  
#登录数据库，执行后提示符变为 </span><span style="color: #800000;">‘</span><span style="color: #800000;">postgres=#</span><span style="color: #800000;">‘</span><span style="color: #000000;">
   psql </span>-<span style="color: #000000;">U postgres 
#设置postgres用户密码为postgres
   ALTER USER postgres WITH PASSWORD </span><span style="color: #800000;">‘</span><span style="color: #800000;">postgres</span><span style="color: #800000;">‘</span><span style="color: #000000;">  
# 退出数据库
    \q </span>

7、开启远程访问

<span style="color: #0000ff;">vi</span> /var/lib/pgsql/<span style="color: #800080;">12</span>/data/<span style="color: #000000;">postgresql.conf<br>
修改#listen_addresses </span>= <span style="color: #800000;">‘</span><span style="color: #800000;">localhost</span><span style="color: #800000;">‘</span>  为  listen_addresses=<span style="color: #800000;">‘</span><span style="color: #800000;">*</span><span style="color: #800000;">‘</span><span style="color: #000000;">
当然，此处‘</span>*’也可以改为任何你想开放的服务器IP

8、信任远程连接

<span style="color: #0000ff;">vi</span> /var/lib/pgsql/<span style="color: #800080;">12</span>/data/<span style="color: #000000;">pg_hba.conf<br>
修改如下内容，信任指定服务器连接
# IPv4 local connections:
host    all            all      </span><span style="color: #800080;">127.0</span>.<span style="color: #800080;">0.1</span>/<span style="color: #800080;">32</span><span style="color: #000000;">      trust
host    all            all      </span><span style="color: #800080;">192.168</span>.<span style="color: #800080;">1.1</span>/<span style="color: #800080;">32</span>（需要连接的服务器IP）  trust

9、操作

   安装后的数据库data目录

/var/lib/pgsql/<span style="color: #800080;">12</span>/data

   客户端程序目录

/usr/pgsql-<span style="color: #800080;">12</span>/bin

   启动数据库

./pg_ctl -D /var/lib/pgsql/<span style="color: #800080;">12</span>/data start 或者 systemctl start postgresql-<span style="color: #800080;">12</span>

   查看服务是否启动

   操作连接数据库

<span style="color: #000000;">.</span>/psql -Upostgres -dpostgres

PostgreSQL 12 安装

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