appengineDeploy error/ backend appengine failed/ not have 32 max instances

[JK YU]

Hi there,

I've been trying to build and deploy Nomulus following the instructions provided [here](https://github.com/google/nomulus/blob/master/docs/install.md) . 

When attempting to deploy the code to App Engine using the command `./nom_build appengineDeploy --environment=alpha`, I encountered the following error: "You may not have more than 32 total max instances." I tried setting max_instances to 1 in the file ./services/backend/build/staged-app/WEB-INF/appengine-web.xml as well as in other appengine-web.xml files, but the error persists.

Here is the error content:

```

> Task :services:backend:appengineDeploy
Services to deploy:

descriptor:                  [/mnt/data/yujk/epp/nomulus/services/backend/build/staged-app/app.yaml]
source:                      [/mnt/data/yujk/epp/nomulus/services/backend/build/staged-app]
target project:              [epp-reg-alpha]
target service:              [backend]
target version:              [20240725t114759]
target url:                  [https://backend-dot-epp-reg-alpha.df.r.appspot.com]
target service account:      [epp-re...@appspot.gserviceaccount.com]


Beginning deployment of service [backend]...
╔════════════════════════════════════════════════════════════╗
╠═ Uploading 0 files to Google Cloud Storage                ═╣
╚════════════════════════════════════════════════════════════╝
File upload done.
ERROR: (gcloud.app.deploy) INVALID_ARGUMENT: You may not have more than 32 total max instances in your project.                                                                                                  

> Task :services:backend:appengineDeploy FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':services:backend:appengineDeploy'.
> com.google.cloud.tools.appengine.AppEngineException: com.google.cloud.tools.appengine.operations.cloudsdk.process.ProcessHandlerException: com.google.cloud.tools.appengine.AppEngineException: Non zero exit: 1

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.                                                                        

For more on this, please refer to https://docs.gradle.org/8.8/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.                                                        

BUILD FAILED in 14s

```

Thank you for your time!

[Lai Jiang]

It says "32 total max instances". If you add up the total max instances across all services, is it larger than 32?

[JK YU]

I am new to App Engine, so I tried setting max_instance to 1 in all appengine-web.xml files in the program (as shown in the first two pictures below). The command I used is ./nom_build appengineDeploy --environment=alpha, which comes from GitHub Nomulus - install.md, to deploy the code to App Engine. From my research, this command uses the alpha environment. Therefore, I added the max_instance setting in ./core/build/resources/main/google/registry/env/alpha/ and ./core/src/main/java/google/registry/env/alpha/, each containing five appengine-web.xml files. This results in a total of 10 max instances, which is smaller than 32.

However, I am unsure if I have correctly followed the instruction to "set max_instances in appengine-web.xml" in this issue or if I need to configure something in the Google Cloud Console. I am also new to the Google Cloud Console and could only find some relevant settings shown in the third picture below, but none related to "App Engine max instance."

[Lai Jiang]

Try to delete the old versions from the project. It is possible that the max instance limit applies to all versions combined.

Lai Jiang |

Software Engineer |

jian...@google.com |

212-565-6361

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[JK YU]

Deleting old versions worked for me. Thank you very much for your effort and time.

To help others facing the same issue, I have recorded the detailed steps for deleting old versions here. Please refer to this link: 'Simply go to the G Cloud Dashboard, select App Engine. From the left menu, choose Versions and delete the old, unused versions.' The page is shown below.

[Lai Jiang]

Great! I'm glad it worked out for you. If you have other questions, feel free to ask.

Lai Jiang |

Software Engineer |

jian...@google.com |

212-565-6361

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