OnApp for vCenter: Use OVA Template to Set up OnApp Control Panel
There is no need to build a virtual server for the Control Panel from scratch: just install the OVA and get your OnApp Control Panel available at the IP address/hostname of the virtual server, containing all the necessary environment elements.
The OVA is available to download at http://templates.repo.onapp.com/ova/vmware/centos-7.9-x64-onapp-cp-6.8.0-181.ova
You can deploy the template OVA in your vCenter using Deploy OVF Template:

You can download the OVA template locally or use the direct URL:

Choose the name/folder you want, and select the appropriate compute resource, storage, and network. Ensure that the network has an Internet connection, as it is required for the configuration steps.
In the Customize template section, provide the requested information:

The OVA will now be imported into your vCenter, and a new virtual server will be created.
Once the deployment finishes, power on the virtual server if it’s not already powered on. The virtual server will run through an automated script on boot to configure the OnApp install. This process should take a few minutes to complete, but allow 10-15 minutes just in case.
You can sign in the template using the user root and the password changeme (PLEASE CHANGE THE ROOT PASSWORD!) and run “service onapp status” to check the status of OnApp.
You can point your browser to the IP address assigned to the virtual server, and the OnApp log-in page will appear. The username admin and the password changeme are the default credentials. The password should be changed.
The following steps are to add your license keys and connect to your vCloud Director/vCenter server. For these steps, contact your OnApp account manager or architect.