Login to your server via your terminal client (ssh). At the prompt, type:
openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr
Where server is the name of your server.
This will begin the process of generating two files: the Private-Key file for the decryption of your SSL Certificate, and a certificate signing request (CSR) file used to apply for your SSL Certificate. This command will prompt for the following X.509 attributes of the certificate:
- Country Name (C): Use the two-letter code without punctuation for country, for example: US or CA.
- State or Province (S): Spell out the state completely; do not abbreviate the state or province name, for example: California.
- Locality or City (L): The Locality field is the city or town name, for example: Berkeley.
- Organization (O): If your company or department has an &, @, or any other symbol using the shift key in its name, you must spell out the symbol or omit it to enroll, for example: XY & Z Corporation would be XYZ Corporation or XY and Z Corporation.
- Organizational Unit (OU): This field is the name of the department or organization unit making the request.
- Common Name (CN): The Common Name is the Host + Domain Name. It looks like "www.company.com" or "company.com".
Note: Do not enter your email address, challenge password or an optional company name when generating the CSR.
Your .csr file will then be created.
Once the certificate has been issued, follow the steps from this link to install the certificate on your server: SO25709