一、安装环境

    1、virtualbox 5.1.28

    2、CentOS release 6.5 (Final)

    3、Postgresql 9.6.0

二、安装步骤

    1、 安装好Postgresql 9.6.0 并搭建同步流复制，一主两备方案。主备地址，端口分别如下：

  2、安装libevent

        (1)下载libevent               

wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz

         (2)安装libevent

tar -zxvf libevent-2.0.20-stable.tar.gzcd libevent-2.0.20-stable./configure --prefix=/home/pg96/libevent-2.0.20make make install