我在ActiveMQ中遇到了大量（1000）客户端的问题，使用了故障转移协议，SSL（NIO）和simpleAuthenticationPlugin。经过一段时间后，brocker刚刚停止。我正在寻找日志文件中的一些错误，但我还没找到任何东西 - 它是空的。
服务器 - ubuntu 15.04，java版本＆＃34; 1.7.0_80＆＃34; 基本架构信息
我有一个分布式系统。它由C＃客户端（节点）和一个Java客户端（管理器）组成。我正在使用安装在管理器工作的同一主机上的ActiveMQ 5.12.1。通信仅在C＃客户端和管理器之间进行。 C＃客户之间不进行通信。
每个客户端（C＃和java）使用一个队列进行侦听。当管理员想要向节点发送消息时，它使用唯一的队列来完成。当一个节点想要与管理器通信时，它会向管理器的队列发送一条消息。 经理每分钟轮询每个节点。 Manager有2个线程，一个用于接收消息。第二个是拉节点信息
以下是代码：
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("failover://(nio+ssl://localhost:61617)");
connectionFactory.setUserName("user");
connectionFactory.setPassword("password");
Connection connection = connectionFactory.createConnection();
connection.start();
connection.setExceptionListener(this);
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination destination = session.createQueue("manager");
MessageConsumer consumer = session.createConsumer(destination);
Message message= null;
while (!stop) {
try{
message = consumer.receive();
if (message instanceof TextMessage) {
TextMessage textMessage = (TextMessage) message;
String text = textMessage.getText();
processMessage(text);
}
}
catch (Exception e){
Logger.getInstance().log("Exception in message receive loop continue");
}
}
发送消息的管理员代码：
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("failover://(nio+ssl://localhost:61617)");
connectionFactory.setUserName("user");
connectionFactory.setPassword("password");
Connection connection = connectionFactory.createConnection();
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
while(!stop) {
for (everynode) {
Destination destination = session.createQueue(uniqueNodeQueue);
MessageProducer producer = session.createProducer(destination);
producer.setDeliveryMode(DeliveryMode.PERSISTENT);
TextMessage message = session.createTextMessage("in");
producer.send(message);
producer.close();
}
Thread.sleep(time);
}
// Clean up
session.close();
connection.close();
C＃客户端使用Apache.NMS.ActiveMQ;
brokerUri="failover://(ssl://" +Server + ":61617?transport.acceptInvalidBrokerCert=true";
public NonDurableQueueSubscriber(string queueName, string brokerUri)
{
this.queueName = queueName;
ConnectionFactory cf = new ConnectionFactory(brokerUri);
cf.Password = "password";
cf.UserName = "user";
this.connectionFactory = cf;
this.connection = this.connectionFactory.CreateConnection();
if (this.connection.IsStarted)
connection.Stop();
this.connection.Start();
this.session = connection.CreateSession();
ActiveMQQueue queue = new ActiveMQQueue(queueName);
this.consumer = this.session.CreateConsumer(queue, "2 > 1", false);
this.consumer.Listener += new MessageListener(OnMessage);
}
public void OnMessage(IMessage message)
{
ITextMessage textMessage = message as ITextMessage;
if (this.OnMessageReceived != null)
{
this.OnMessageReceived(textMessage.Text);
}
}
static void onMessageReceived(string message)
{
NonDurableQueuePublisher mypublisher = new NonDurableQueuePublisher(queueManager, activemqBrokerUrl);
mypublisher.SendMessage(info());
mypublisher.Dispose();
}
public NonDurableQueuePublisher(String queueName, string brokerUri)
{
this.queueName = queueName;
ConnectionFactory cf = new ConnectionFactory(brokerUri);
cf.Password = "password";
cf.UserName = "user";
this.connectionFactory = cf;
this.connection = connectionFactory.CreateConnection();
this.connection.Start();
this.session = connection.CreateSession();
ActiveMQQueue queue = new ActiveMQQueue(queueName);
this.producer = session.CreateProducer(queue);
}
public void SendMessage(String msg)
{
if (!this.isDisposed)
{
ITextMessage txtMessage = session.CreateTextMessage(msg);
//txtMessage.NMSPersistent = false;
producer.Send(txtMessage);
}
else
{
throw new ObjectDisposedException(this.GetType().FullName);
}
}
activeMQ.xml config activeMQ brocker
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core.xsd">
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>file:${activemq.conf}/credentials.properties</value>
</property>
</bean>
<bean id="logQuery" class="io.fabric8.insight.log.log4j.Log4jLogQuery"
lazy-init="false" scope="singleton"
init-method="start" destroy-method="stop">
</bean>
<broker xmlns="http://activemq.apache.org/schema/core" brokerName="localhost" deleteAllMessagesOnStartup="true" dataDirectory="${activemq.data}">
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">" >
<pendingMessageLimitStrategy>
<constantPendingMessageLimitStrategy limit="1000"/>
</pendingMessageLimitStrategy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
<managementContext>
<managementContext createConnector="false"/>
</managementContext>
<persistenceAdapter>
<kahaDB directory="${activemq.data}/kahadb"/>
</persistenceAdapter>
<systemUsage>
<systemUsage>
<memoryUsage>
<memoryUsage percentOfJvmHeap="70" />
</memoryUsage>
<storeUsage>
<storeUsage limit="100 gb"/>
</storeUsage>
<tempUsage>
<tempUsage limit="50 gb"/>
</tempUsage>
</systemUsage>
</systemUsage>
<plugins>
<simpleAuthenticationPlugin>
<users>
<authenticationUser username="user" password="password" groups="users,admins"/>
</users>
</simpleAuthenticationPlugin>
</plugins>
<sslContext>
<sslContext keyStore="/ssl/broker.ks"
keyStorePassword="password"/>
</sslContext>
<transportConnectors>
<transportConnector name="nio+ssl" uri="nio+ssl://0.0.0.0:61617?maximumConnections=20000&wireFormat.maxFrameSize=104857600"/>
</transportConnectors>
<shutdownHooks>
<bean xmlns="http://www.springframework.org/schema/beans" class="org.apache.activemq.hooks.SpringContextHook" />
</shutdownHooks>
</broker>
<import resource="jetty.xml"/>
当我使用NIO时，有些人剪掉了有趣的日志：
2015-11-25 17:20:31,495 | ERROR | Could not accept connection from null: java.io.IOException: javax.net.ssl.SSLException: Inbound closed before receiving peer's close_notify: possible truncation attack? | org.apache.activemq.broker.TransportConnector | ActiveMQ BrokerService[localhost] Task-616
2015-11-25 17:20:31,495 | WARN | Transport Connection to: tcp://192.168.1.4:51939 failed: javax.net.ssl.SSLException: Inbound closed before receiving peer's close_notify: possible truncation attack? | org.apache.activemq.broker.TransportConnection.Transport | ActiveMQ NIO Worker 151
2015-11-25 17:20:25,493 | ERROR | Could not accept connection from null: java.io.IOException: javax.net.ssl.SSLException: Unsupported record version Unknown-0.0 | org.apache.activemq.broker.TransportConnector | ActiveMQ BrokerService[localhost] Task-787
2015-11-25 17:20:19,309 | ERROR | Could not accept connection from null: java.io.IOException: javax.net.ssl.SSLException: Unsupported record version Unknown-0.0 | org.apache.activemq.broker.TransportConnector | ActiveMQ BrokerService[localhost] Task-669
2015-11-25 17:19:53,051 | WARN | Transport Connection to: tcp://192.168.1.23:51587 failed: org.apache.activemq.transport.InactivityIOException: Channel was inactive (no connection attempt made) for too (>30000) long: tcp://192.168.1.23:51587 | org.apache.activemq.broker.TransportConnection.Transport | ActiveMQ InactivityMonitor Worker
在NIO之前，我只尝试过SSL，结果是相同的→brocker关闭。
任何想法？
答案 0 :(得分：1)
您似乎超出了activemq.xml中配置的最大连接数限制。您可以通过JMX检查连接数以确认这一点。
您需要了解为什么您的设置会创建如此多的打开连接，以及为什么不打算关闭它们。 C＃代码对我来说看起来有点狡猾（没有关闭任何地方的电话）但是因为我看不到所有可能它没关系。
这似乎不是ActiveMQ问题，而是应用程序问题。