In Plesk, go to Domains and select the domain you want to add an SSL certificate for. This domain must be on a dedicated IP Address to work correctly.
Select SSL Certificates
Click Add SSL Certificate
Fill out the information correctly and accurately, select in 2048 bit format.
Click the “Request” button.
Go to your choice of SSL providers. In this example, we are using GoDaddy.
Once your SSL certificate has been signed and issued, GoDaddy will send you an email message that allows you to download the signed certificate and their intermediate certificate bundle, both of which must be installed on your Web site.
Download the certificate to your computer.
Follow the instructions below to install your SSL certificate and the certificate bundle on your Web server.
Installing SSL Certificate and Certificate Bundle (gd_bundle.crt)
Before you install your issued SSL certificate you must install the certificate bundle on your Web server. (You may also download the certificate bundle from the repository.)
1. Log in to the Plesk Control Panel.
2. From the left-hand menu, select Domains.
3. Click on the domain name that the certificate is issued for.
4. Click on the Certificates menu item.
5. Click Browse and locate your signed SSL certificate.
6. Select the certificate file and then click Send File.
7. Navigate to the location of the saved site certificate you received from us. Select it, then select Send File – this will upload and install the certificate against the corresponding private key.
8. On the displayed list, click on the name of the certificate.
9. Open the certificate bundle (gd_bundle.crt) in a text editor and copy and paste its contents into the box labeled CA Certificate.
10. Click the Send Text button.
11. Click Up Level; then choose Setup.
12. At the top of the page, change the SSL Certificate drop-down menu to the certificate you have just installed.
13. Click the Server item from the left-hand menu.
14. Click on the Service Management menu item.
15. Stop and Start the Apache process.