I am using nodejs on appengine. We had a perfectly stable app scaffold on tuesday, and by friday it was completely broken after attempting to deploy. We made some minor changes to frontend code, but nothing that I think would prevent the instance from spinning up.
Here are steps to reproduce.
-
gcloud --project "{appname}" preview app deploy -
logs show npm install, container build, etc.
-
Hangs on
Updating service [default]...for 5 minutes -
Fails with error.
ERROR: (gcloud.preview.app.deploy) Error Response: [13] Timed out when starting VMs. It's possible that the application code is unhealthy. (0/1 ready, 1 still deploying).
I have tried reverting the repository to when we had stable deployments, and it didn't help. This makes me think something on GCP is broken.
I have tried deleting all current versions and then deploying, but to no avail.
Best Answer
When you get this error, you can take a look at crash.log in the Cloud Console Logs Viewer (Logging -> Logs) for your specific service / version which will usually tell you exactly what happened. In my case when I reproduced the same error, crash.log shows me the output of NPM which tells me I have a 'SyntaxError: Unexpected identifier'.
YMMV of course, but this can tell you if the issue is related to your application code or if there is something more sinister going on.