Installing OpenSSL

Check the OpenSSL version.
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openssl version
Determine whether an upgrade is required.
- If the OpenSSL version is 1.1.1a or later, skip this section.
- If the OpenSSL version is earlier than 1.1.1a, upgrade it to 1.1.1a or later. For details, see Obtaining the Source Code and Compiling and Installing OpenSSL.

Obtaining the Source Code

Obtain the OpenSSL source code.
Download the OpenSSL source package using a local browser.

Copy the OpenSSL source code to the /home directory on the server.

If the server can access the Internet, you can also run the wget command on the server to download the source code.

          
               cd /home
wget https://codeload.github.com/openssl/openssl/tar.gz/OpenSSL_1_1_1d --no-check-certificate
mv OpenSSL_1_1_1d openssl-OpenSSL_1_1_1d.tar.gz

Compiling and Installing OpenSSL

Decompress the OpenSSL package.

        
             tar -xvf openssl-OpenSSL_1_1_1d.tar.gz

Go to openssl-OpenSSL_1_1_1d and view files in it.
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cd openssl-OpenSSL_1_1_1d/ ls
Configure OpenSSL.
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./config --prefix=/opt/openssl
Perform compilation.
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make -j20
Perform installation.
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make install

Parent topic: Configuring the Compilation Environment