java - Minishift - Pod 未启动

Question

我在 minishift 上使用 Java 应用程序时遇到问题。构建看起来不错，但部署失败。

我有以下错误:

Starting the Java application using /opt/jboss/container/java/run/run-java.sh ...
INFO exec  java -javaagent:/opt/jboss/container/jolokia/jolokia.jar=config=/opt/jboss/container/jolokia/etc/jolokia.properties -XX:+UseParallelOldGC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MaxMetaspaceSize=100m -XX:+ExitOnOutOfMemoryError -cp "." -jar /deployments/demo-0.0.1-SNAPSHOT.jar  
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
no main manifest attribute, in /deployments/demo-0.0.1-SNAPSHOT.jar

Answer 1

看起来您的最终图像没有META-INF/MANIFEST.MF。

对于您的应用程序，您应该有一个像这样的 pom.xml:

<build>
  <plugins>
    <plugin>
      <!-- Build an executable JAR -->
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-jar-plugin</artifactId>
      <version>3.1.0</version>
      <configuration>
        <archive>
          <manifest>
            <addClasspath>true</addClasspath>
            <classpathPrefix>lib/</classpathPrefix>
            <mainClass>com.mypackage.MyClass</mainClass>
          </manifest>
        </archive>
      </configuration>
    </plugin>
  </plugins>
</build>

Openshift 将为您创建 META-INF/MANIFEST.MF。