Linux how to create a CSR

Linux is much easier than some may think.

Step 1: Firstly, you will need OpenSSL installed. Skip to step 2 if installed.

RHEL/AlmaLinux

sudo yum install openssl

Ubuntu/Debian

sudo apt install openssl

Step 2: Run the command to create the request:

openssl req -new -newkey rsa:2048 -nodes -keyout /path/to/yourDNSpath.key -out /path/to/yourDNSpath.csr

So, to explain a bit. The RSA:2048 is the key size; bigger is more secure, but it requires more processing power. 20248 is currently standard

The key will be your private key to use with the application requiring the SSL. The csr file is what you will need to request the signed cert.