AppEngine Deploy Error (app.yaml) - google-app-engine

Question

I am trying to deploy the app.yaml file to appengine flexible.
Here is my app.yaml file
runtime: java
env: flex
manual_scaling:
instances: 1
handlers:
- url: /.*
script: this field is required, but ignored
secure: always
runtime_config: # Optional
jdk: openjdk8
server: jetty9
resources:
cpu: 0.5
memory_gb: 0.18
disk_size_gb: 10
I am trying to deploy it with this command:
gcloud app deploy app.yaml --verbosity=debug
And this is the error I get:
DEBUG: No staging command found for runtime [java] and environment [FLEX].
WARNING: Deployment of App Engine Flexible Environment apps is currently in Beta
Building and pushing image for service [my-service]
DEBUG: Could not call git with args ('config', '--get-regexp', 'remote\\.(.*)\\.url'): [Error 2] The system cannot find the file specified
INFO: Not checking for [Custom] because runtime is [java]
INFO: Not checking for [Go] because runtime is [java]
INFO: Not checking for [Ruby] because runtime is [java]
INFO: Not checking for [Node.js] because runtime is [java]
INFO: Checking for Java.
INFO: Not checking for [Python Compat] because runtime is [java]
INFO: Not checking for [Python] because runtime is [java]
INFO: Not checking for [PHP] because runtime is [java]
DEBUG: (gcloud.app.deploy) Your application does not satisfy all of the requirements for a runtime of type [java]. Please correct the errors and try again.
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\calliope\cli.py", line 742, in Execute
resources = args.calliope_command.Run(cli=self, args=args)
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\calliope\backend.py", line 739, in Run
resources = command_instance.Run(args)
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\surface\app\deploy.py", line 59, in Run
return deploy_util.RunDeploy(args)
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\command_lib\app\deploy_util.py", line 413, in RunDeploy
all_services)
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\command_lib\app\deploy_util.py", line 241, in Deploy
new_version, service, source_dir, image, code_bucket_ref)
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\command_lib\app\deploy_util.py", line 176, in _PossiblyBuildAndPush
code_bucket_ref, self.deploy_options.use_runtime_builders)
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\api_lib\app\deploy_command_util.py", line 206, in BuildAndPushDockerImage
gen_files.update(_GetDockerfiles(service, source_dir))
File "C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\lib\googlecloudsdk\api_lib\app\deploy_command_util.py", line 139, in _GetDockerfiles
'again.'.format(info.runtime))
UnsatisfiedRequirementsError: Your application does not satisfy all of the requirements for a runtime of type [java]. Please correct the errors and try again.
ERROR: (gcloud.app.deploy) Your application does not satisfy all of the requirements for a runtime of type [java]. Please correct the errors and try again.
So it ends up not deploying the app.yaml.
However, if I run this command:
gcloud app deploy cron.yaml
It will work just fine.

Answer 1

Yeah, this is a gap right now :/ You can't actually deploy a Java app to App Engine flexible via gcloud app deploy. You need to use the Maven or Gradle plugins.
Sorry for the trouble!