Amazon ec2 &引用；通道关闭：连接错误“；

我已经在AWS上设置了一个带有两个节点的RabbitMQ集群，并按照描述启用了HA。然后，我将弹性负载平衡器映射到实例的

5672

端口，并定期对实例的

15672

端口（HTTP管理端口）进行运行状况检查。然后，我启动了两个侦听器（每个节点一个），每个侦听器有4个使用者，并将

spring.rabbitmq.host

指向负载平衡器的DNS。但是，我会定期收到以下错误：

[E] [2015-03-14 23:13:23,890] [pool-4-thread-9         ] [CachingConnectionFactory        ] [                                    ] Channel shutdown: connection error
[E] [2015-03-14 23:13:23,891] [pool-4-thread-9         ] [CachingConnectionFactory        ] [                                    ] Channel shutdown: connection error
[E] [2015-03-14 23:13:23,891] [pool-4-thread-9         ] [CachingConnectionFactory        ] [                                    ] Channel shutdown: connection error
[E] [2015-03-14 23:13:23,891] [pool-4-thread-9         ] [CachingConnectionFactory        ] [                                    ] Channel shutdown: connection error
[W] [2015-03-14 23:13:24,758] [impleAsyncTaskExecutor-5] [SimpleMessageListenerContainer  ] [                                    ] Consumer raised exception, processing can restart if the connection factory supports it
com.rabbitmq.client.ShutdownSignalException: connection error
    at com.rabbitmq.client.impl.AMQConnection.startShutdown(AMQConnection.java:717) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection.shutdown(AMQConnection.java:707) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:565) ~[amqp-client-3.4.2.jar!/:?]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]
Caused by: java.io.EOFException
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290) ~[?:1.8.0_40]
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:534) ~[amqp-client-3.4.2.jar!/:?]
    ... 1 more
[I] [2015-03-14 23:13:24,761] [impleAsyncTaskExecutor-5] [SimpleMessageListenerContainer  ] [                                    ] Restarting Consumer: tags=[[amq.ctag-H-1ed6xO3GL7qW58bkLUZA]], channel=Cached Rabbit Channel: AMQChannel(amqp://qube@10.100.43.76:5672qube,1), acknowledgeMode=AUTO local queue size=0
[W] [2015-03-14 23:13:24,762] [impleAsyncTaskExecutor-8] [SimpleMessageListenerContainer  ] [                                    ] Consumer raised exception, processing can restart if the connection factory supports it
com.rabbitmq.client.ShutdownSignalException: connection error
    at com.rabbitmq.client.impl.AMQConnection.startShutdown(AMQConnection.java:717) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection.shutdown(AMQConnection.java:707) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:565) ~[amqp-client-3.4.2.jar!/:?]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]
Caused by: java.io.EOFException
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290) ~[?:1.8.0_40]
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:534) ~[amqp-client-3.4.2.jar!/:?]
    ... 1 more
[I] [2015-03-14 23:13:24,762] [impleAsyncTaskExecutor-8] [SimpleMessageListenerContainer  ] [                                    ] Restarting Consumer: tags=[[amq.ctag-nJAmieDx-kSuxl9arsXiww]], channel=Cached Rabbit Channel: AMQChannel(amqp://qube@10.100.43.76:5672qube,2), acknowledgeMode=AUTO local queue size=0
[W] [2015-03-14 23:13:24,767] [impleAsyncTaskExecutor-7] [SimpleMessageListenerContainer  ] [                                    ] Consumer raised exception, processing can restart if the connection factory supports it
com.rabbitmq.client.ShutdownSignalException: connection error
    at com.rabbitmq.client.impl.AMQConnection.startShutdown(AMQConnection.java:717) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection.shutdown(AMQConnection.java:707) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:565) ~[amqp-client-3.4.2.jar!/:?]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]
Caused by: java.io.EOFException
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290) ~[?:1.8.0_40]
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:534) ~[amqp-client-3.4.2.jar!/:?]
    ... 1 more
[I] [2015-03-14 23:13:24,768] [impleAsyncTaskExecutor-7] [SimpleMessageListenerContainer  ] [                                    ] Restarting Consumer: tags=[[amq.ctag-PAQvN8P57_9oiElyqYRJWw]], channel=Cached Rabbit Channel: AMQChannel(amqp://qube@10.100.43.76:5672qube,3), acknowledgeMode=AUTO local queue size=0
[W] [2015-03-14 23:13:24,768] [impleAsyncTaskExecutor-6] [SimpleMessageListenerContainer  ] [                                    ] Consumer raised exception, processing can restart if the connection factory supports it
com.rabbitmq.client.ShutdownSignalException: connection error
    at com.rabbitmq.client.impl.AMQConnection.startShutdown(AMQConnection.java:717) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection.shutdown(AMQConnection.java:707) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:565) ~[amqp-client-3.4.2.jar!/:?]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]
Caused by: java.io.EOFException
    at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290) ~[?:1.8.0_40]
    at com.rabbitmq.client.impl.Frame.readFrom(Frame.java:95) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.SocketFrameHandler.readFrame(SocketFrameHandler.java:139) ~[amqp-client-3.4.2.jar!/:?]
    at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:534) ~[amqp-client-3.4.2.jar!/:?]
    ... 1 more
[I] [2015-03-14 23:13:24,769] [impleAsyncTaskExecutor-6] [SimpleMessageListenerContainer  ] [                                    ] Restarting Consumer: tags=[[amq.ctag-w6apIlL78ViAnTOzx2Qejg]], channel=Cached Rabbit Channel: AMQChannel(amqp://qube@10.100.43.76:5672qube,4), acknowledgeMode=AUTO local queue size=0

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如果我将每个使用者直接指向一个节点（不使用负载平衡器），则不会发生这种情况。是什么导致了这种行为？如何避免此问题？

ping管理端口将无法保持amqp连接的活动状态

您需要将心跳配置为足够低的值，以防止负载平衡器断开“空闲”连接

看起来您可能正在使用Spring Boot（基于属性名），但它当前没有将

requestedHeartbeats

作为属性公开；您需要通过将自己的

rabbitConnectionFactory

bean与底层的rabbitmq连接工厂心跳设置连接起来来覆盖引导工厂。有关详细信息，请参阅

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也就是说，将负载平衡器与Spring AMQP结合使用不会带来任何好处，因为它使用的是单一的长寿命连接。考虑在<代码>地址> /COD>属性中配置两个实例，如果第一个不可用，它将失败到第二个实例。

听起来确实是个问题。非常感谢！我理解您关于负载平衡的观点，但对我来说，从外部（动态）定义实例比在属性上定义实例更方便。既然没有好处，那么使用负载平衡器会不会出什么问题呢？不会。只要你把心跳设置好就不会有什么问题。