linux环境在连接Activemq的时候报以下信息，找了半天配了下host OK了，记录一下。
java.net.UnknownHostException: MySQLMASTER: MySQLMASTER: 未知的名称或服务
at java.net.InetAddress.getLocalHost(InetAddress.java:1473)[:1.7.0_67]
at org.fusesource.insight.log.support.LogQuerySupport.<init>(LogQuerySupport.java:56)[insight-log-core-7.2.0.redhat-024.jar:7.2.0.redhat-024]
at org.fusesource.insight.log.log4j.Log4jLogQuery.<init>(Log4jLogQuery.java:60)[insight-log4j-7.2.0.redhat-024-patched.jar:7.2.0.redhat-024]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)[:1.7.0_67]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)[:1.7.0_67]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)[:1.7.0_67]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)[:1.7.0_67]
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1030)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:983)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)[spring-beans-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)[spring-context-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)[spring-context-3.2.8.RELEASE.jar:3.2.8.RELEASE]
at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:64)[xbean-spring-3.16.jar:3.16]
at org.apache.xbean.spring.context.ResourceXmlApplicationContext.<init>(ResourceXmlApplicationContext.java:52)[xbean-spring-3.16.jar:3.16]
at org.apache.activemq.xbean.XBeanBrokerFactory$1.<init>(XBeanBrokerFactory.java:104)[activemq-spring-5.10.0.jar:5.10.0]
at org.apache.activemq.xbean.XBeanBrokerFactory.createApplicationContext(XBeanBrokerFactory.java:104)[activemq-spring-5.10.0.jar:5.10.0]
at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:67)[activemq-spring-5.10.0.jar:5.10.0]
at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:71)[activemq-broker-5.10.0.jar:5.10.0]
at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:54)[activemq-broker-5.10.0.jar:5.10.0]
at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:87)[activemq-console-5.10.0.jar:5.10.0]
at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)[activemq-console-5.10.0.jar:5.10.0]
at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:150)[activemq-console-5.10.0.jar:5.10.0]
at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:57)[activemq-console-5.10.0.jar:5.10.0]
at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:104)[activemq-console-5.10.0.jar:5.10.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.7.0_67]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)[:1.7.0_67]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_67]
at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_67]
at org.apache.activemq.console.Main.runTaskClass(Main.java:262)[activemq.jar:5.10.0]
at org.apache.activemq.console.Main.main(Main.java:115)[activemq.jar:5.10.0]
解决办法：
vi /etc/hosts
配置host地址：
本机ip MySQLMASTER
这样就OK了