CentOs7 安装 PostgreSQL 12

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＃安装存储库RPM：
yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm

# 安装PostgreSQL：
yum install -y postgresql12-server

#（可选）初始化数据库
/usr/pgsql-12/bin/postgresql-12-setup initdb

# 设置开机启动项
systemctl enable postgresql-12
systemctl start postgresql-12