Tomcat start times wrong: java.net.UnknownHostException

The exception information is as follows:

info:failed to get local inetaddress forVMID. Unlikely to matter. At all. We'll add some extra randomnessjava.net.unknownhostexception:ran-oam:ran-oam:name or service not known at Java.net.InetAddress.getLocalHost (Inetaddress.java:1473) at Com.mchange.v2.uid.UidUtils.generateVmId (Uidutils.java: -) at Com.mchange.v2.uid.UidUtils.<clinit> (Uidutils.java: Wu) at Com.mchange.v2.c3p0.impl.C3P0ImplUtils.<clinit> (C3p0implutils.java:126) at Com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase.<init> (Poolbackeddatasourcebase.java:288) at Com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.<init> (Abstractpoolbackeddatasource.java: About) at Com.mchange.v2.c3p0.AbstractComboPooledDataSource.<init> (Abstractcombopooleddatasource.java:142) at Com.mchange.v2.c3p0.AbstractComboPooledDataSource.<init> (Abstractcombopooleddatasource.java:138) at Com.mchange.v2.c3p0.ComboPooledDataSource.<init> (Combopooleddatasource.java: -) at Sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method) at Sun.reflect.NativeConstructorAcce Ssorimpl.newinstance (Nativeconstructoraccessorimpl.java: $) at Sun.reflect.DelegatingConstructorAccessorImpl.newInstance (Delegatingconstructoraccessorimpl.java: $) at Java.lang.reflect.Constructor.newInstance (Constructor.java:526) at Org.springframework.beans.BeanUtils.instantiateClass (Beanutils.java:148) at Org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate ( Simpleinstantiationstrategy.java: the) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean ( Abstractautowirecapablebeanfactory.java:1004) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance ( Abstractautowirecapablebeanfactory.java:957) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean ( Abstractautowirecapablebeanfactory.java:490) at Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean ( Abstractautowirecapablebeanfactory.java:461) at org.springframework.beans.factory.support.abstractbeanfactory$1. GetObject (Abstractbeanfactory.java:295) at Org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton ( Defaultsingletonbeanregistry.java:223) at Org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean (Abstractbeanfactory.java:292) at Org.springframework.beans.factory.support.AbstractBeanFactory.getBean (Abstractbeanfactory.java:194) at Org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons ( Defaultlistablebeanfactory.java:626) at Org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization ( Abstractapplicationcontext.java:932) at Org.springframework.context.support.AbstractApplicationContext.refresh (Abstractapplicationcontext.java: 479) at Org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext ( Contextloader.java:389) at Org.springframework.web.context.ContextLoader.initWebApplicationContext (Contextloader.java:294) at org.springframework.web.context.ContextLoaderListener.contextInitialized (Contextloaderlistener.java:  the) at Org.apache.catalina.core.StandardContext.listenerStart (Standardcontext.java:5016) at Org.apache.catalina.core.StandardContext.startInternal (Standardcontext.java:5524) at Org.apache.catalina.util.LifecycleBase.start (Lifecyclebase.java: Max) at Org.apache.catalina.core.ContainerBase.addChildInternal (Containerbase.java:901) at Org.apache.catalina.core.ContainerBase.addChild (Containerbase.java:877) at Org.apache.catalina.core.StandardHost.addChild (Standardhost.java:649) at Org.apache.catalina.startup.HostConfig.deployDirectory (Hostconfig.java:1245) at Org.apache.catalina.startup.hostconfig$deploydirectory.run (Hostconfig.java:1895) at Java.util.concurrent.executors$runnableadapter.call (Executors.java:471) at Java.util.concurrent.FutureTask.run (Futuretask.java:262) at Java.util.concurrent.ThreadPoolExecutor.runWorker (Threadpoolexecutor.java:1145) at Java.util.concurrent.threadpoolexecutor$worker.run (Threadpoolexecutor.java:615) at Java.lang.Thread.run (Thread.java:745) caused By:java.net.UnknownHostException:ran-oam:name or service not known at JAVA.NET.INET6ADDRESSIMPL.LOOKUPALLHOSTADDR (Native Method) at JAVA.NET.INETADD ress$1. LOOKUPALLHOSTADDR (Inetaddress.java:901) at Java.net.InetAddress.getAddressesFromNameService (Inetaddress.java:1293) at Java.net.InetAddress.getLocalHost (Inetaddress.java:1469)    ...  A  More

Workaround, configure the host name.

View Host Name:

Echo ' hostname '

After executing the above command, the hostname will be printed, and this note will be used later. For example, my host name is "Ran-oam."

To modify a file:

VI /etc/hosts

Write the host name, as

After completing the modifications, restart Tomcat and find the problem resolved.

Tomcat start times wrong: java.net.UnknownHostException