java - spring boot maven插件-jvm参数-直接内存大小设置

Question

我正在使用 spring-boot-maven-plugin 通过以下命令从我的应用构建 docker 镜像:

spring-boot::build-image

我需要使用这个 jvm 参数更改 jvm 直接内存的默认大小(默认为 10m):

-XX:MaxDirectMemorySize=64M

这是我在应用程序的 pom.xml 中尝试的所有尝试:

<plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <configuration>
                            <jvmArguments>-XX:MaxDirectMemorySize=64M</jvmArguments>
                            <environmentVariables>
                                <JAVA_TOOL_OPTIONS>-XX:MaxDirectMemorySize=64M</JAVA_TOOL_OPTIONS>
                                <JAVA_OPTS>-XX:MaxDirectMemorySize=64M</JAVA_OPTS>
                            </environmentVariables>
                            <systemPropertyVariables>
                                <JAVA_TOOL_OPTIONS>-XX:MaxDirectMemorySize=64M</JAVA_TOOL_OPTIONS>
                                <JAVA_OPTS>-XX:MaxDirectMemorySize=64M</JAVA_OPTS>
                            </systemPropertyVariables>
                        </configuration>
                    </execution>
                </executions>

                <configuration>
                    <layers>
                        <enabled>true</enabled>
                    </layers>
                    <image>
                        <name>docker.io/example/${project.artifactId}:${project.version}</name>
                    </image>

                    <excludeDevtools>true</excludeDevtools>

                    <systemPropertyVariables>
                        <JAVA_TOOL_OPTIONS>-XX:MaxDirectMemorySize=64M</JAVA_TOOL_OPTIONS>
                        <JAVA_OPTS>-XX:MaxDirectMemorySize=64M</JAVA_OPTS>
                    </systemPropertyVariables>
                    <environmentVariables>
                        <JAVA_TOOL_OPTIONS>-XX:MaxDirectMemorySize=64M</JAVA_TOOL_OPTIONS>
                        <JAVA_OPTS>-XX:MaxDirectMemorySize=64M</JAVA_OPTS>
                    </environmentVariables>
                    <jvmArguments>-XX:MaxDirectMemorySize=64M -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005</jvmArguments>
                </configuration>
            </plugin>

但是直接内存仍然设置为 10M :(当应用程序启动时，我可以在日志文件中看到:

Picked up JAVA_TOOL_OPTIONS: -Djava.security.properties=/layers/paketo-buildpacks_bellsoft-liberica/java-security-properties/java-security.properties -agentpath:/layers/paketo-buildpacks_bellsoft-liberica/jvmkill/jvmkill-1.16.0-RELEASE.so=printHeapHistogram=1 -XX:ActiveProcessorCount=8 -XX:MaxDirectMemorySize=10M -Xmx11521920K -XX:MaxMetaspaceSize=144375K -XX:ReservedCodeCacheSize=240M -Xss1M -Dorg.springframework.cloud.bindings.boot.enable=true

谁能告诉我我做错了什么？

注意事项:

Spring Boot:2.3.7.RELEASE

当我使用 -e 手动运行 docker image 时，jvm 参数的更改正在起作用:

docker run -e JAVA_TOOL_OPTIONS=-XX:MaxDirectMemorySize=64M  docker.io/example/app-name:0.0.1

这个 mvn 插件使用 Buildpack 创建 docker 镜像:

https://paketo.io/docs/buildpacks/language-family-buildpacks/java/#about-the-jvm

更新:

根据文档，这应该是可行的解决方案，但它不是:

            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <layers>
                        <enabled>true</enabled>
                    </layers>
                    <image>
                        <name>docker.io/example/${project.artifactId}:${project.version}</name>
                        <env>
                            <JAVA_TOOL_OPTIONS>-XX:MaxDirectMemorySize=64M</JAVA_TOOL_OPTIONS>
                        </env>
                    </image>
                </configuration>

Answer 1

这是一个关于如何使运行时环境“有粘性”的工作解决方案:

....
                    <image>
                        <name>docker.io/example/${project.artifactId}:${project.version}</name>
                        <env>
                            <BPE_APPEND_JAVA_TOOL_OPTIONS>-XX:MaxDirectMemorySize=64M</BPE_APPEND_JAVA_TOOL_OPTIONS>
                            <BPE_DELIM_JAVA_TOOL_OPTIONS xml:space="preserve"> </BPE_DELIM_JAVA_TOOL_OPTIONS>
                        </env>
                    </image>
...

spring-boot-maven-plugin 使用 paketo 构建包:

文档: https://github.com/paketo-buildpacks/environment-variables