How to link a GoDaddy domain with an OVH Shared hosting/hébergement mutualisé… Good question.
This was much more complicated than expected, so here is how it goes:
First, add the new domain to OVH.
Disclaimer: at the time of writing (2015-06-18), OVH is migrating and unifying its admin interfaces, and I had to use the v3 to be able to do this. The last one just didn’t give the options.
Go to your OVH interface, into Administration, then Add New domain.
Select Add to DNS (advanced configuration).
Zone type: shared hosting in English/hébergement mutualisé en français. Email type: Redirect Hosting: your main hosting.
Validate, and wait. It might break. Refresh later.
Second, configure the new domain as a multi domain.
Go to your main domain administration, then select multi-domains.
Create a new standard multi-domain.
Make it point wherever you want in your directories. Save.
At this point, you should be able to see that OVH is giving you the DNS servers for this domain.
They look like:
Copy them and you are done with OVH.
Third, update you NameServer in GoDaddy.
You will need your OVH DNS server names I’ve mentionned previously. Replace your NameServers in GoDaddy interface, wherever they will move it next time:
NS61.DOMAINCONTROL.COM -> NS000.OVH.NET NS62.DOMAINCONTROL.COM -> DNS000.OVH.NET
Save, and you are done with GoDaddy.
Check that the DNS config is ok with https://www.whatsmydns.net/ and you are good to go.