方法一、直接安裝
yum install openssl openssl-devel

方法二、下載原始碼編譯安裝

以下借鑑了他人的安裝方法，並根據我自己的安裝進行了修改
1.下載
wget https://www.openssl.org/source/openssl-1.0.2h.tar.gz
2.解壓
tar zxf openssl-1.0.2h.tar.gz


3.安裝
cd openssl-1.0.2h
./config shared zlib


because of configuration changes, you MUST do the following before
*** building:


提醒需要在build之前做make depend
make depend


4.


make
make install
 
　mv /usr/bin/openssl /usr/bin/openssl.bak
 
　mv /usr/include/openssl /usr/include/openssl.bak
 
　ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
 
　ln -s /usr/local/ssl/include/openssl /usr/include/openssl
 
　echo “/usr/local/ssl/lib” >> /etc/ld.so.conf
 
　ldconfig -v


4.檢測安裝是否成功


openssl version -a