Download the Jira server install from here.
Follow the steps here to download and add the JDBC driver to your Jira server. Download and copy the mysql connector jar to
Chose the ‘set up myself’ option, and complete the form to point to your already installed MySQL db instance:
Configure your install properties:
On the next screen you’ll be prompted for your license key, or head over to the Atlassian site to purchase or create a trial key. When you enter your organization name (above) on the license site it will pick up your site id.
Create an admin user, continue and now you’re up and running!