问题
I was trying to map a custom domain name to site I have created in Google App Engine. However, the custom domain is not getting applied to the site. Below are the steps that I have performed after checking Google Help Sites and stackoverflow answers.
1. Created / Uploaded Google App Engine Site
http://myGoogleSite.appspot.com/
2. Purchased a domain name
mydomain.com
3. Created a CNAME Record with my domain name provider
Name: www
Value: ghs.google.com
4. Created a Google apps account
https://www.google.com/a/mydomain.com
5. Verified domain name in Google apps account
6. Enabled services for Google App Engine.
Added site http://myGoogleSite.appspot.com/ (Created in Step 1)
7. Google Admin Panel
Settings > Select Google App Engine site
Added New Web Address
http://www.mydomain.com
RESOLVED
The issue has been resolved without any other changes after a day. I think the CNAME entry which I had added in domain name server did get applied a day later. Though I had checked it through dnsstuff.com on the same day and they were reflected correctly.
回答1:
If the CNAME www does not work when directed to ghs.google.com, try ghs.googlehosted.com instead. It's what at least some of their docs say.
For a company that can pretty accurately sift through millions of pages for related data, their documentation on their own products sucks hard.
回答2:
The issue has been resolved without any other changes after a day. I think the CNAME entry which I had added in domain name server did get applied a day later. Though I had checked it through dnsstuff.com on the same day and they were reflected correctly
来源：https://stackoverflow.com/questions/11280542/google-app-engine-custom-domain