解决Akka集群中Aeron未删除临时文件的方法如下所示：

1. 使用Akka的配置文件配置Aeron的临时文件位置，将其设置为一个指定的目录。例如，在application.conf文件中添加以下配置：

   akka {
     actor {
       provider = cluster
     }
   
     remote {
       artery {
         canonical.hostname = "127.0.0.1"
         canonical.port = 0
       }
     }
   
     aeron {
       driver-dir = "path/to/temp/directory"
     }
   }
   

   将"path/to/temp/directory"替换为存储Aeron临时文件的目录的实际路径。

2. 创建一个扩展类，重写Aeron的DriverContext来设置临时文件目录。例如：

   import io.aeron.driver.MediaDriver;
   import io.aeron.driver.ThreadingMode;
   import io.aeron.driver.status.SystemCounterDescriptor;
   import io.aeron.driver.status.SystemCounter;
   
   public class CustomDriverContext extends MediaDriver.Context {
   
       public CustomDriverContext() {
           super();
           aeronDirectoryName("path/to/temp/directory");
       }
   
       @Override
       public MediaDriver.Context conductorIdleStrategy(final String idleStrategyName) {
           super.conductorIdleStrategy(idleStrategyName);
           return this;
       }
   
       @Override
       public MediaDriver.Context receiverIdleStrategy(final String idleStrategyName) {
           super.receiverIdleStrategy(idleStrategyName);
           return this;
       }
   
       @Override
       public MediaDriver.Context senderIdleStrategy(final String idleStrategyName) {
           super.senderIdleStrategy(idleStrategyName);
           return this;
       }
   
       @Override
       public MediaDriver.Context sharedNetworkIdleStrategy(final String idleStrategyName) {
           super.sharedNetworkIdleStrategy(idleStrategyName);
           return this;
       }
   
       public static void main(final String[] args) {
           final MediaDriver.Context ctx = new CustomDriverContext();
           final MediaDriver mediaDriver = MediaDriver.launch(ctx);
           final CountersReader counters = mediaDriver.context().countersManager();
           final int driverTimeoutCountId = SystemCounterDescriptor.CONTROLLABLE_IDLE_STRATEGY.id();
   
           while (counters.getCounterValue(driverTimeoutCountId) < 5) {
               // wait for at least 5 driver timeouts
               Thread.sleep(100);
           }
   
           mediaDriver.close();
       }
   }
   

   这将覆盖Aeron的DriverContext并设置了临时文件目录。

3. 构建并启动集群时，使用自定义的DriverContext。例如：

   import akka.actor.ActorSystem;
   import akka.cluster.Cluster;
   import akka.cluster.ClusterEvent;
   import akka.cluster.Member;
   import akka.cluster.MemberStatus;
   import akka.management.cluster.bootstrap.ClusterBootstrap;
   import akka.management.javadsl.AkkaManagement;
   import io.aeron.driver.MediaDriver;
   import scala.concurrent.duration.Duration;
   
   import java.util.concurrent.TimeUnit;
   
   public class ClusterApp {
   
       public static void main(String[] args) {
           final CustomDriverContext driverContext = new CustomDriverContext();
           final MediaDriver mediaDriver = MediaDriver.launch(driverContext);
   
           final ActorSystem system = ActorSystem.create("ClusterSystem");
           AkkaManagement.get(system).start();
           ClusterBootstrap.get(system).start();
           Cluster.get(system).registerOnMemberUp(() -> {
               system.actorOf(Props.create(MyActor.class), "myActor");
           });
   
           Cluster.get(system).subscribe(system.actorOf(Props.create(ClusterListener.class)),
                   ClusterEvent.initialStateAsEvents(),
                   ClusterEvent.ClusterDomainEvent.class);
   
           Runtime.getRuntime().addShutdownHook(new Thread(() -> {
               Cluster.get(system).leave(Cluster.get(system).selfAddress());
               system.terminate();
           }));
   
           while (!Cluster.get(system).selfMember().status().equals(MemberStatus.up())) {
               try {
                   TimeUnit.SECONDS.sleep(1);
               } catch (InterruptedException e) {
                   e.printStackTrace();
               }
           }
   
           // Perform cluster operations
   
           // Terminate the system when done
           system.terminate();
       }
   }
   

   在这个示例中，我们创建了一个自定义的DriverContext，并在Akka集群启动之前启动了Aeron的MediaDriver。

这些步骤将设置Aeron的临时文件目录，并确保在集群关闭时自动删除临时文件。