ActiveMQ笔记(5)：JMX监控

系统上线运行后，及时监控报警是很必要的手段，对于ActiveMQ而言，主要监控的指标有:MQ本身的健康状况、每个队列的生产者数量、消费者数量、队列的当前消息数等。

ActiveMQ支持JMX监控，使用步骤如下：

一、修改conf/activemq.xml

<broker … useJmx="true”>    <managementContext>        <managementContext createConnector="true" connectorPort=“jmx端口号” connectorHost=“本机ip地址" />             </managementContext></broker>
二、设置jmx.access、jmx.passWord的文件权限
?
1
chmod 400 conf/jmx.*
(即：将jmx.password, jmx.access这二个文件设置成只读权限，activemq出于安全考虑，要求这二个文件只读)
三、修改bin/activemq 启动shell脚本
找到invoke_start(){ 这段，然后在前面插入：
?
12345
ACTIVEMQ_CONF=“jmx.password所在位置的物理路目录"ACTIVEMQ_SUNJMX_START="-Dcom.sun.management.jmxremote.port=端口号 "ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote.password.file=${ACTIVEMQ_CONF}/jmx.password"ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote.access.file=${ACTIVEMQ_CONF}/jmx.access"ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote.ssl=false"
然后重启activemq即可。
然后在jconsole中，可以输入 ip地址:jmx端口号
　
其中username,password即jmx.password中定义的用户名和密码。
四、 sPRing中使用JMX
    <bean class="org.springframework.jmx.support.MBeanServerConnectionFactoryBean" id="mbeanServerConnection1">        <property name="serviceUrl" value="${mq_jmx_url1}"/>        <property name="connectOnStartup" value="false"/>        <property name="environment">            <props>                <prop key="java.naming.security.principal">                    ${mq_jmx_user1}                </prop>                <prop key="java.naming.security.credentials">                    ${mq_jmx_passwor1}                </prop>            </props>        </property>    </bean>
其中serviceUrl的值类似：service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi
参考示例：
?
123456789101112131415161718192021222324252627282930313233
private List<ActiveMQData> getMonitorDataList(MBeanServerConnection conn, String objectName) {        List<ActiveMQData> datas = new ArrayList<>();        try {            ObjectName objRootName = new ObjectName(objectName);             String brokerName = (String) conn.getAttribute(objRootName, "BrokerName");            String brokerId = (String) conn.getAttribute(objRootName, "BrokerId");            String openWireUrl = (String) conn.getAttribute(objRootName, "OpenWireURL");             //健康状态            ObjectName healthObjName = new ObjectName(objectName + ",service=Health");            String healthStatus = (String) conn.getAttribute(healthObjName, "CurrentStatus");             //遍历队列            ObjectName[] objectNames = (ObjectName[]) conn.getAttribute(objRootName, "Queues");            Arrays.sort(objectNames);             List<String> blackList = monitorConfig.getQueueBlackList();            for (ObjectName queueName : objectNames) {                ...                Long queueSize = (Long) conn.getAttribute(queueName, "QueueSize");//队列消息数量                Long producerCount = (Long) conn.getAttribute(queueName, "ProducerCount");//生产者数量                Long consumerCount = (Long) conn.getAttribute(queueName, "ConsumerCount");//消费者数量                Long enqueueCount = (Long) conn.getAttribute(queueName, "EnqueueCount");//入队消息总数                Long dequeueCount = (Long) conn.getAttribute(queueName, "DequeueCount");//出队消息总数                ...            }        } catch (Exception e) {           ...        }         return datas;    }
其中objectName值，可以在jconsole中查到