Setting JVM options on Beanstalk Tomcat

Question

Trying to set options as follows:

-Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=5004,suspend=n

Using both "Container Options > JVM options" and as a Environment Property as follows:
Name: _JAVA_OPTIONS
Value: -Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=5004,suspend=n

Neither approach seemed to work. Tomcat starts as follows:

12-Apr-2022 02:24:46.838 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name:   Apache Tomcat/8.5.75
12-Apr-2022 02:24:46.844 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Feb 28 2022 18:26:53 UTC
12-Apr-2022 02:24:46.848 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 8.5.75.0
12-Apr-2022 02:24:46.850 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
12-Apr-2022 02:24:46.851 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            4.14.268-205.500.amzn2.x86_64
12-Apr-2022 02:24:46.851 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
12-Apr-2022 02:24:46.852 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/lib/jvm/java-1.8.0-amazon-corretto.x86_64/jre
12-Apr-2022 02:24:46.853 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_322-b06
12-Apr-2022 02:24:46.854 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Amazon.com Inc.
12-Apr-2022 02:24:46.854 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /usr/share/tomcat
12-Apr-2022 02:24:46.855 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /usr/share/tomcat
12-Apr-2022 02:24:46.858 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The Apache Tomcat Native library which allows using OpenSSL was not found on the java.library.path: [/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib]
12-Apr-2022 02:24:47.016 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
12-Apr-2022 02:24:47.045 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
12-Apr-2022 02:24:47.074 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1048 ms
12-Apr-2022 02:24:47.165 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
12-Apr-2022 02:24:47.173 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: [Apache Tomcat/8.5.75]
12-Apr-2022 02:24:47.242 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [/var/lib/tomcat/webapps/jcs.war]
12-Apr-2022 02:24:56.187 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/var/lib/tomcat/webapps/jcs.war] has finished in [8,943] ms
12-Apr-2022 02:24:56.192 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [/var/lib/tomcat/webapps/work.war]
12-Apr-2022 02:25:35.849 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/var/lib/tomcat/webapps/work.war] has finished in [39,657] ms
12-Apr-2022 02:25:35.863 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
12-Apr-2022 02:25:35.875 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 48794 ms

How are JVM options supposed to be set in this environment?

Thanks much.

Answer

According to the docs the namespace [aws:elasticbeanstalk:container:tomcat:jvmoptions](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/command-options-specific.html#command-options-java) should be used to set JVM Options.

Answer

I was able to set the following in Configuration > Software > Container Options > JVM Options which opened up the port:

-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5004

However I tried to set the same option in .ebextensions/tomcat-settings.config file to no affect. Not even sure if bundle deploy is handling this file at all. It is not copied to /etc/tomcat/conf.d. If I manually copy it to /etc/tomcat/conf.d it apparently is not used to configure Tomcat. Is there a known issue with this approach?

.ebextensions/tomcat-settings.config content:

option_settings:
  aws:elasticbeanstalk:container:tomcat:jvmoptions:
    Xms: 1024m
    Xmx: 2048m
    JVM Options: '-agentlib: jdwp=transport=dt_socket,server=y,suspend=n,address=5004'
   
  aws:elasticbeanstalk:environment:proxy:
    ProxyServer: apache

Answer

I had problems with this configuration as well. 
My mistake was that I wasn't enclosing the values in single quotes. 
The parameter value should be in single quotes: '-Duser.language=pt -Duser.region=BR'. 
My tomcat-setting.config ended up like this:

{
  "option_settings": [
	{  
      "namespace": "aws:elasticbeanstalk:container:tomcat:jvmoptions",
      "option_name": "JVM Options",
      "value": "'-Duser.language=pt -Duser.region=BR'"
	}
]
}

Setting JVM options on Beanstalk Tomcat

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