1. 查看openssl版本

openssl version

2. 下载openssl

wget  https://www.openssl.org/source/openssl-1.1.1c.tar.gz

3. 解压并编译openssl

yum -y install gcc gcc-c++ perl
tar -zxvf openssl-1.1.1c.tar.gz
cd openssl-1.1.1c
./config --prefix=/usr/local/openssl   #如果此步骤报错,需要安装perl以及gcc包
make && make install
mv /usr/bin/openssl /usr/bin/openssl.bak
mv /usr/include/openssl /usr/include/openssl.bak
ln -sf /usr/local/openssl/bin/openssl /usr/bin/openssl
ln -s /usr/local/openssl/include/openssl /usr/include/openssl
echo "/usr/local/openssl/lib" >> /etc/ld.so.conf
ldconfig -v                    # 设置生效
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