keepalived configure: error: !!! OpenSSL is not properly installed on your system. !!! 错误解决

项目场景：

部署PostgreSQL高可用环境 keepalived 源码包。

问题描述：

安装 keepalived 源码包，已经运行了以下命令：

tar -xf keepalived-2.2.4.tar.gz
cd keepalived-2.2.4

运行以下命令时，最后报错，导致终止运行。

./configure --prefix=/usr/local/keepalived

报错：

  !!! OpenSSL is not properly installed on your system. !!!
  !!! Can not include OpenSSL headers files.  

原因分析：

出现该错误主要原因缺少头文件，需要安装openssl-devel。

解决方案：

yum -y install openssl-devel

重新运行命令

./configure --prefix=/usr/local/keepalived

命令运行正常，问题解决。