Ensure that your domain settings are properly configured before booting up your GitHub Enterprise instance for the first time.
In the upper-right corner of any page, click .
In the left sidebar, click Management Console.
In the left sidebar, click Hostname.
To test your appliance's DNS and SSL settings, click Test domain settings.
If you don't receive a green checkmark next to all entries, review your configuration for the setting that failed. For more information, see "Configuring DNS nameservers."
Under the left sidebar, click Save settings.