由于应用程序设置损坏，Google App Engine（Java）自定义页面为“无法解析服务器的DNS地址”。 我该如何解决？

Question

I'm trying to display a custom admin page in the "Custom" section of GAE's admin console (Java). I've got the html file in the war directory. My appengine-web.xml contains the admin-console tag:

<admin-console>
    <page name="Hello World" url="/helloWorld.html" />
</admin-console>

To view the custom admin page, I need to deploy to app engine (searching on stack overflow I found that custom pages do not show up in the dev environment). When I deploy, I see the link under the "Custom" section as "Hello World". When I click on it, I get an error message:

Unable to resolve the server's DNS address

You can find a screenshot of the error message here: http://i.stack.imgur.com/656P9.jpg

Debugging steps taken:

1. Is the html page available when I try to access it directly. ie app-id.appspot.com/helloWorld.html ?
   Yes

2. If I create a new app in app engine (let's call this app2) and deploy this same code , can I access the custom page from within the admin console?
   Yes

3. If I create a new app by copying the settings from my original app (let's call this app3) using the "Duplicate Application Settings" from Application Settings in the Admin Console and then deploy this same code , can I access the custom page from within the admin console?
   No

4. Are the Application Settings of app2 and app3 the same (Application Settings is accessible from the Admin Console)?
   Yes (except for the "Application Title" and "Application Identifier")

5. Am I using a Custom domain? [1]
   No

6. Am I using Google Accounts API for the "Authentication Type"? [1]
   Yes

[1] Stack Overflow post: Datastore admin - Unable to resolve the server's DNS address

This leads me to believe that my Application Settings are somehow corrupted and I cannot fix this from the Application Settings section in the Admin Console. Is there a way that I can "clean" my Application Settings or "restore to factory defaults" to fix this, without affecting the data in my app?

Any help with how to fix this is greatly appreciated! Thanks!

I posted this on HN for more exposure, link to discussion: https://news.ycombinator.com/item?id=9443973

Answer 1

One of the comments suggested that I redeploy with a new version name and delete the old version. that did the trick! thanks @jirungaray