How do I point a domain to my Cloud VM?

You can find the IP address of your Cloud VM in the Cloud Control Panel under:

Virtual Machines > vm name

This is the default IP address on your VM and unless you have set up extra IP addresses on the VM and have your domains using them this would be the IP address you need to point any domainname or hostname to if you want it pointing to your VM.

Once you have your domainname\hostname set up on the VM however you need it (i.e. set up in the webserver you installed on the VM) then we recommend you set up the following DNS records for that domain to have it point to your VM:

# An A record of *.domainname.com pointing to the VM's IP address
# An A record of domainname.com pointing to the VM's IP address
# An A record of www.domainname.com pointing to the VM's IP address

If you have an email server set up on the VM also and want the domain to use it for email then you need to set up an MX record to set the email to go to domainname.com; typical records would be as follows:

# An A record of mail.domainname.com pointing to the VM's IP address
# An MX record for domainname.com pointing to mail.domainname.com
# An TXT record for domainname.com set as v=spf1 a mx ~all

cp.blacknight.com
If you have the domain added to cp.blacknight.com and are looking to set up the above DNS Records there then that is done under
Hosted Domains > domainname > DNS > DNS Records > Add new DNS Record

#  Add an A record, leave the first field blank, put the IP address in the second field
#  Add another A record, put * in the first field and the IP address in the second field
#  Add an MX record, leave the Mail Domain field blank and put domainname.com in the Mail Exchanger field.

You can see more information on this here:
https://help.blacknight.com/entries/22941608-dns-records-in-cp-blacknight-com