在 terraform 代码中使用 Java 11 作为运行时的 Google App Engine 灵活环境存在问题

Question

我正在尝试为我的 Java 应用程序配置 Google App Engine 灵活环境，并且我想使用 Java 11 作为运行时。但是，我遇到了一个问题，它似乎正在使用 Java 8，并且出现以下错误：

google_app_engine_flexible_app_version.myapp_v1: Still creating... [3m30s elapsed]╷│ Error: Error waiting to create FlexibleAppVersion: Error waiting for Creating FlexibleAppVersion: Error code 9, message: An internal error occurred while processing task /app-engine-flex/flex_await_healthy/flex_await_healthy>2023-10-27T03:35:51.497Z43727.vt.2: Start command: java -showversion -Xms491M -Xmx491M -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:+PrintCommandLineFlags -jar app.jar
│ -XX:InitialHeapSize=514850816 -XX:MaxHeapSize=514850816 -XX:+ParallelRefProcEnabled -XX:+PrintCommandLineFlags -XX:+UseCompressedClassPointers -XX:+UseCompressedOops -XX:+UseG1GC 
│ openjdk version "1.8.0_345"
│ OpenJDK Runtime Environment (Temurin)(build 1.8.0_345-b01)
│ OpenJDK 64-Bit Server VM (Temurin)(build 25.345-b01, mixed mode)
│ │ Error: A JNI error has occurred, please check your installation and try again
│ Exception in thread "main" java.lang.UnsupportedClassVersionError: com/example/appengine/Application has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
│       at java.lang.ClassLoader.defineClass1(Native Method)
│       at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
│       at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
│       at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
│       at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
│       at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
│       at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
│       at java.security.AccessController.doPrivileged(Native Method)
│       at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
│       at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
│       at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
│       at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
│       at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:601)

我已经像这样配置了我的 google_app_engine_flexible_app_version 资源：这次我尝试使用 terraform 资源中的 app.yaml 文件

resource "google_app_engine_flexible_app_version" "myapp_v1" {
  version_id = "v1"
  project    = "fresh-test1"
  service    = "servcie1"
  runtime    = "java"

  deployment {
    files {
      name = "micronaut-helloworld-0.1.jar"
      source_url = "https://storage.googleapis.com/${google_storage_bucket.bucket.name}/${google_storage_bucket_object.object.name}"
    }
    cloud_build_options {
      app_yaml_path = "[./app.yaml]"
    }
  }

  liveness_check {
    path = "/"
  }

  readiness_check {
    path = "/"
  }

  env_variables = {
    port = "8080"
  }

  automatic_scaling {
    cool_down_period = "120s"
    max_total_instances = 2
    min_total_instances = 1
    cpu_utilization {
      target_utilization = 0.5
    }
  }
  delete_service_on_destroy = true
  service_account = google_service_account.custom_service_account.email
}

app.yaml

runtime: java
env: flex
runtime_config:
  operating_system: ubuntu22
  runtime_version: 11
service: api
handlers:
- url: /.*
  script: this field is required, but ignored

resources:
  cpu: 1
  memory_gb: 4
  disk_size_gb: 40

automatic_scaling:
  min_num_instances: 1
  max_num_instances: 1

  cpu_utilization:
    target_utilization: 0.85

env_variables:
  SPRING_PROFILES_ACTIVE: prod
  

我正在从 google cloud shell 运行 terraform 代码。 和 Java --version 指向 java17 JAVA_HOME指向java11 我不知道这是否重要。

有没有办法正确配置 Google App Engine 灵活环境以使用 Java 11 作为运行时？我是否使用了正确的入口点和运行时配置？任何帮助或指导将不胜感激。

Answer 1

我也有同样的错误。

我有一个 Spring Boot 应用程序，我将项目从 Java 8 迁移到 Java 17，我可以在 10 月 14 日正常部署。我可以在日志中看到该应用程序正在 Java 17 上运行。

10 月 15 日，我只是添加了一个小功能，没有更改配置，然后我开始遇到同样的错误。

由于我没有更改配置，我认为这是 Google Cloud 上的问题，但自 10 月 15 日以来，这种情况一直在我身上发生。

这是我的 app.yaml，是按照 Google Cloud 教程制作的：

runtime: java
env: flex
runtime_config:
  operating_system: ubuntu22
  runtime_version: 17
  
service: api
  
handlers:
- url: /.*
  script: this field is required, but ignored
  
resources:
  cpu: 1
  memory_gb: 4
  disk_size_gb: 40


automatic_scaling:
  min_num_instances: 1
  max_num_instances: 1
  
  cpu_utilization:
    target_utilization: 0.85
  
env_variables:                      
    SPRING_PROFILES_ACTIVE: prod