无法在AWS Elastic Beanstalk Java SE平台上设置JVM堆大小 [英] Not able to set JVM heap size on AWS Elastic Beanstalk Java SE Platform

问题描述

我在Elastic Beanstalk上使用单个EC2 t2.micro实例(1GB RAM)部署了一个Spring Boot应用程序.

I have a Spring Boot app deployend on Elastic Beanstalk using a single EC2 t2.micro instance (1GB RAM).

我需要增加应用程序的JVM堆大小，但无法这样做.我尝试过的事情是:

I need to increase my app's JVM Heap size but I'm not being able to do so. The things I have tried are:

• 在EB控制台的环境配置中使用值-Xms512m -Xmx896m设置JAVA_OPTS变量.
• 在项目根文件夹中使用Procfile部署应用程序，其中包含以下行:web: java -jar <relative-path-to-jar> -Xms512m -Xmx896m

• Setting a JAVA_OPTS variable in the enviroment configuration in the EB console with the value -Xms512m -Xmx896m.
• Deploying the app with a Procfile in the project root folder what contains the following line: web: java -jar <relative-path-to-jar> -Xms512m -Xmx896m

我还能尝试什么?

注意:要检查我ssh进入实例的运行应用程序的JVM堆大小，并使用jstat命令作为此答案描述.计算最大值总是得到256MB，这就是dafault.

Note: To check the JVM heap size of the running app I ssh into the instance and use the jstat command as this answer describes. Calculating the max value always gives me 256MB which is the dafault.

推荐答案

我解决了！

我的Spring Boot项目是一个多模块项目:

My Spring Boot project was a multi-module one:

• base_module(POM类型)
  • .elasticbeanstalk
    • config.yaml
    • base_module (POM type)
      • .elasticbeanstalk
        • config.yaml

        其中一个模块(我正在部署的一个jar)导入了其他模块.我的错误是我将Procfile放在基本模块的根目录中.同样在config.yaml文件中，我输入了以下几行:

        One of the modules (the one's jar I was deploying) imported the other ones. My mistake was that I was putting the Procfile in the root of the base module. Also in the config.yaml file I was putting the following lines:

        deploy:
            artifact: module1/target/app.jar
        

        因此，命令eb deploy没有考虑Procfile.

        解决方案是将.elasticbeanstalk文件夹移到module1文件夹，从config.yaml中删除我上面所说的行，并在module1的根目录中添加以下行:Procfile:

        The solution was to move the .elasticbeanstalk folder into the module1 folder, removing the lines I said above from the config.yaml and to add a Procfile in the root of module1 with the following line:

        web: java -jar target/app.jar -Xmx896M
        

        最终的项目结构为:

        • base_module(POM类型)
          • module1(绑定的模块.将pom.xml中的module2和module3导入)
            • .elasticbeanstalk
              • config.yaml
              • base_module (POM type)
                • module1 (delpyed module. imports module2 and module3 in the pom.xml)
                  • .elasticbeanstalk
                    • config.yaml

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