如何清除AMQP心跳隊列故障排除

簡介

本文說明如何清除進階訊息佇列通訊協定(AMQP)波動訊號佇列的疑難排解程式

貢獻了Aswathi Surendran、Gustavo Bell Cisco TAC工程師。

必要條件

需求

思科建議您瞭解以下主題：

• Linux介面
• 虛擬機器環境
• 兔子 

採用元件

本檔案中的資訊是根據以下軟體版本：

• CloudCenter 4.3.x版到4.6.x版
• CloudCenter消息匯流排(RabbitMQ_Server)

本文中的資訊是根據特定實驗室環境內的裝置所建立。文中使用到的所有裝置皆從已清除（預設）的組態來啟動。如果您的網路正在作用，請確保您已瞭解任何指令可能造成的影響。

 背景資訊

  池的活動執行緒大小為64，其中提交到作業對應的執行緒超過3000，將拒絕該執行緒，因為代碼一次不能處理超過64個執行緒，因此它將等待前一個任務完成並執行其他任務。

任何大於已執行執行緒池可使用的任務將被拒絕。 

問題

filecliqr-connection.log位於/usr/local/tomcatgua/logs/report error:

Caused by: org.springframework.core.task.TaskRejectedException: Executor [java.util.concurrent.ThreadPoolExecutor@6737f4fb[Running, pool size = 64, active threads = 64, queued tasks = 3000, completed tasks = 413]] did not accept task: org.springframework.aop.interceptor.AsyncExecutionInterceptor$1@6b0517b3 
at org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor.submit(ThreadPoolTaskExecutor.java:284) 
at org.springframework.aop.interceptor.AsyncExecutionAspectSupport.doSubmit(AsyncExecutionAspectSupport.java:186) 
at org.springframework.aop.interceptor.AsyncExecutionInterceptor.invoke(AsyncExecutionInterceptor.java:123) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208) 
at com.sun.proxy.$Proxy84.processMessage(Unknown Source) 
at com.osmosix.commons.messaging.listeners.impl.DefaultNodeMessageListener.handleMessage(DefaultNodeMessageListener.java:35) 
at sun.reflect.GeneratedMethodAccessor78.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:497) 
at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:269) 
at org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter.invokeListenerMethod(MessageListenerAdapter.java:383) 
... 12 more 
Caused by: java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@3911a213 rejected from java.util.concurrent.ThreadPoolExecutor@6737f4fb[Running, pool size = 64, active threads = 64, queued tasks = 3000, completed tasks = 413] 
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047) 
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823) 
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369) 
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) 
at org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor.submit(ThreadPoolTaskExecutor.java:281) 
... 23 more 
2016-10-19 02:32:32,205 INFO annotation.RequestMappingHandlerMapping [localhost-startStop-1] - Mapped "{[/image/service/dltargetlocal],methods=[POST]}" onto public java.util.Map<java.lang.String, ?> com.osmosix.gateway.image.transform.ImageTransformController.downloadToTargetLocal(com.osmosix.commons.image.transform.DownloadImageFileRequest) 
2016-10-19 02:32:32,206 WARN listener.ConditionalRejectingErrorHandler [SimpleAsyncTaskExecutor-1] - Execution of Rabbit message listener failed. 
org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Listener method 'handleMessage' threw exception 
at org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter.invokeListenerMethod(MessageListenerAdapter.java:391) 
at org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter.onMessage(MessageListenerAdapter.java:294) 
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:757) 
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:680) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$001(SimpleMessageListenerContainer.java:93) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$1.invokeListener(SimpleMessageListenerContainer.java:183) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.invokeListener(SimpleMessageListenerContainer.java:1352) 
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:661) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:1096) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:1080) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$800(SimpleMessageListenerContainer.java:93) 
at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1197) 
at java.lang.Thread.run(Thread.java:745)

解析

步驟1。  通過SSH登入到RabbitMQ伺服器。

步驟2.切換到root使用者。

# sudo -i

步驟3.啟用管理外掛。

# rabbitmq-plugins enable rabbitmq_management​ 

步驟4.啟用對rabbitmqadmin命令的訪問。  

# chmod +x `find /var/lib/rabbitmq/ -name "rabbitmqadmin"`
# ln -s `find /var/lib/rabbitmq/ -name "rabbitmqadmin"` /usr/sbin

步驟5.可以通過GUI訪問RabbitMQ。

http://
     
     
       :15672 (username=cliqr password=cliqr) 
     

附註：使用您的RabbitMQ伺服器地址替換配置中的RabbitMQ_Server_IP

導航隊列頁籤以檢視詳細資訊

或

CLI:

# rabbitmqadmin -V /cliqr -u cliqr -p cliqr list queues
# rabbitmqadmin -V /cliqr -u cliqr -p cliqr list exchanges
# rabbitmqadmin -V /cliqr -u cliqr -p cliqr list channels

步驟6.刪除網關心跳隊列。

#rabbitmqadmin -V /cliqr delete queue name=cliqr.gateway.heartbeat.queue --username=cliqr --password=cliqr

步驟7.  在RabbitServer中重新啟動tomcat服務。

#/etc/init.d/tomcatgua stop
#/etc/init.d/tomcatgua start

  

注意:如果缺少cliqr.gateway.heartbeat.queue，請按照以下步驟重新啟動CCO tomcat服務：

步驟8.  通過SSH登入到CCO伺服器。

步驟9.切換到根使用者。

# sudo -i

步驟10.重新啟動Tomcat伺服器。

#/etc/init.d/tomcat stop
#/etc/init.d/tomcat start