Getting the error when the hostname could not be resolved while trying to  start the tomcat when the hostname cannot be resolved:

the stack trace:

Jul 07, 2017 4:09:15 PM org.apache.catalina.core.AprLifecycleListener init

INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

Jul 07, 2017 4:09:15 PM org.apache.catalina.startup.SetAllPropertiesRule begin

WARNING: [SetAllPropertiesRule]{Server/Service/Connector} Setting property 'maxSpareThreads' to '75' did not find a matching property.

Jul 07, 2017 4:09:15 PM org.apache.tomcat.util.digester.SetPropertiesRule begin

WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:avaya-oss' did not find a matching property.

Jul 07, 2017 4:09:16 PM org.apache.coyote.AbstractProtocol init

INFO: Initializing ProtocolHandler ["http-bio-8080"]

Jul 07, 2017 4:09:16 PM org.apache.coyote.AbstractProtocol init

INFO: Initializing ProtocolHandler ["ajp-bio-8009"]

Jul 07, 2017 4:09:16 PM org.apache.coyote.AbstractProtocol init

INFO: Initializing ProtocolHandler ["http-bio-52233"]

Jul 07, 2017 4:09:16 PM org.apache.catalina.startup.Catalina load

INFO: Initialization processed in 775 ms

Jul 07, 2017 4:09:16 PM org.apache.catalina.core.StandardService startInternal

INFO: Starting service Catalina

Jul 07, 2017 4:09:16 PM org.apache.catalina.core.StandardEngine startInternal

INFO: Starting Servlet Engine: Apache Tomcat/7.0.47

16:09:21,659 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]

16:09:21,660 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]

16:09:21,660 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at file:/home/admin/tomcat7/wtpwebapps/avaya-oss/WEB-INF/classes/logback.xml

16:09:21,699 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set

16:09:21,706 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Will scan for changes in file:/home/admin/tomcat7/wtpwebapps/avaya-oss/WEB-INF/classes/logback.xml

16:09:21,706 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeTask scanning period to 30 seconds

16:09:21,708 |-INFO in ch.qos.logback.core.joran.action.ConversionRuleAction - registering conversion word onlyShowIf with class [com.avaya.oss.server.utils.common.ConditionalCompositeConverter]

16:09:21,708 |-INFO in ch.qos.logback.classic.joran.action.EvaluatorAction - Assuming default evaluator class [ch.qos.logback.classic.boolex.JaninoEventEvaluator]

16:09:21,709 |-INFO in ch.qos.logback.classic.joran.action.EvaluatorAction - Adding evaluator named [EMPTY_MARKER] to the object stack

16:09:21,726 |-INFO in ch.qos.logback.classic.boolex.JaninoEventEvaluator@2518f3c9 - Adding [return] prefix and a semicolon suffix. Expression becomes [return marker==null;]

16:09:21,726 |-INFO in ch.qos.logback.classic.boolex.JaninoEventEvaluator@2518f3c9 - See also [http://logback.qos.ch/codes.html#block]

16:09:21,835 |-INFO in ch.qos.logback.classic.joran.action.EvaluatorAction - Starting evaluator named [EMPTY_MARKER]

16:09:21,835 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.rolling.RollingFileAppender]

16:09:21,840 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [FILE]

16:09:21,857 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@1287728481 - No compression will be used

16:09:21,858 |-INFO in c.q.l.core.rolling.TimeBasedRollingPolicy@1287728481 - Will use the pattern /opt/Avaya/oss/logs/oss-server.%d{yyyy-MM-dd}.log for the active file

16:09:21,863 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - The date pattern is 'yyyy-MM-dd' from file name pattern '/opt/Avaya/oss/logs/oss-server.%d{yyyy-MM-dd}.log'.

16:09:21,863 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Roll-over at midnight.

16:09:21,864 |-INFO in c.q.l.core.rolling.DefaultTimeBasedFileNamingAndTriggeringPolicy - Setting initial period to Fri Jul 07 16:09:12 IST 2017

16:09:21,882 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[FILE] - Active log file name: /opt/Avaya/oss/logs/oss-server.log

16:09:21,882 |-INFO in ch.qos.logback.core.rolling.RollingFileAppender[FILE] - File property is set to [/opt/Avaya/oss/logs/oss-server.log]

16:09:21,883 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.classic.net.SyslogAppender]

16:09:21,885 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [SYSLOG]

16:09:21,891 |-INFO in ch.qos.logback.classic.net.SyslogAppender[SYSLOG] - Defaulting maxMessageSize to [62464]

16:09:31,901 |-ERROR in ch.qos.logback.classic.pattern.SyslogStartConverter@2a314cb4 - Could not determine local host name java.net.UnknownHostException: usagem: usagem: Name or service not known

            at java.net.UnknownHostException: usagem: usagem: Name or service not known

            at         at java.net.InetAddress.getLocalHost(InetAddress.java:1505)

            at         at ch.qos.logback.classic.pattern.SyslogStartConverter.getLocalHostname(SyslogStartConverter.java:88)

            at         at ch.qos.logback.classic.pattern.SyslogStartConverter.start(SyslogStartConverter.java:49)

            at         at ch.qos.logback.core.pattern.ConverterUtil.startConverters(ConverterUtil.java:37)

            at         at ch.qos.logback.core.pattern.PatternLayoutBase.start(PatternLayoutBase.java:92)

            at         at ch.qos.logback.classic.net.SyslogAppender.buildLayout(SyslogAppender.java:131)

            at         at ch.qos.logback.core.net.SyslogAppenderBase.start(SyslogAppenderBase.java:79)

            at         at ch.qos.logback.classic.net.SyslogAppender.start(SyslogAppender.java:50)

            at         at ch.qos.logback.core.joran.action.AppenderAction.end(AppenderAction.java:90)

            at         at ch.qos.logback.core.joran.spi.Interpreter.callEndAction(Interpreter.java:309)

            at         at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:193)

            at         at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:179)

            at         at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:62)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:165)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:152)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:110)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:53)

            at         at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)

            at         at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)

            at         at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)

            at         at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)

            at         at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)

            at         at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)

            at         at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)

            at         at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)

            at         at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)

            at         at com.avaya.oss.server.Application.<clinit>(Application.java:60)

            at         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

            at         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

            at         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

            at         at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

            at         at java.lang.Class.newInstance(Class.java:442)

            at         at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:152)

            at         at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5423)

            at         at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

            at         at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

            at         at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

            at         at java.util.concurrent.FutureTask.run(FutureTask.java:266)

            at         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

            at         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

            at         at java.lang.Thread.run(Thread.java:748)

Caused by: java.net.UnknownHostException: usagem: Name or service not known

            at         at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)

            at         at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)

            at         at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)

            at         at java.net.InetAddress.getLocalHost(InetAddress.java:1500)

            at         ... 40 common frames omitted

16:09:41,910 |-ERROR in ch.qos.logback.classic.pattern.SyslogStartConverter@355a8cbf - Could not determine local host name java.net.UnknownHostException: usagem: usagem: Name or service not known

            at java.net.UnknownHostException: usagem: usagem: Name or service not known

            at         at java.net.InetAddress.getLocalHost(InetAddress.java:1505)

            at         at ch.qos.logback.classic.pattern.SyslogStartConverter.getLocalHostname(SyslogStartConverter.java:88)

            at         at ch.qos.logback.classic.pattern.SyslogStartConverter.start(SyslogStartConverter.java:49)

            at         at ch.qos.logback.core.pattern.ConverterUtil.startConverters(ConverterUtil.java:37)

            at         at ch.qos.logback.core.pattern.PatternLayoutBase.start(PatternLayoutBase.java:92)

            at         at ch.qos.logback.classic.net.SyslogAppender.setupStackTraceLayout(SyslogAppender.java:140)

            at         at ch.qos.logback.classic.net.SyslogAppender.start(SyslogAppender.java:51)

            at         at ch.qos.logback.core.joran.action.AppenderAction.end(AppenderAction.java:90)

            at         at ch.qos.logback.core.joran.spi.Interpreter.callEndAction(Interpreter.java:309)

            at         at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:193)

            at         at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:179)

            at         at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:62)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:165)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:152)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:110)

            at         at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:53)

            at         at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)

            at         at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)

            at         at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)

            at         at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)

            at         at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)

            at         at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)

            at         at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)

            at         at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)

            at         at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)

            at         at com.avaya.oss.server.Application.<clinit>(Application.java:60)

            at         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

            at         at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

            at         at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

            at         at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

            at         at java.lang.Class.newInstance(Class.java:442)

            at         at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:152)

            at         at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5423)

            at         at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

            at         at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)

            at         at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)

            at         at java.util.concurrent.FutureTask.run(FutureTask.java:266)

            at         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

            at         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

            at         at java.lang.Thread.run(Thread.java:748)

Caused by: java.net.UnknownHostException: usagem: Name or service not known

            at         at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)

            at         at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)

            at         at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)

            at         at java.net.InetAddress.getLocalHost(InetAddress.java:1500)

            at         ... 39 common frames omitted

16:09:41,912 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.avaya.oss.server] to INFO

16:09:41,912 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [org.springframework] to WARN

16:09:41,912 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [org.apache.velocity] to ERROR

16:09:41,912 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.morgan.design] to WARN

16:09:41,912 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO

16:09:41,912 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [FILE] to Logger[ROOT]

16:09:41,912 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [SYSLOG] to Logger[ROOT]

16:09:41,912 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.

16:09:41,913 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@15ae324c - Registering current configuration as safe fallback point

 

Jul 07, 2017 4:09:41 PM org.apache.catalina.core.ApplicationContext log

INFO: 2 Spring WebApplicationInitializers detected on classpath

 

Can we get the fix of ContextUtil (in the catch block ) in the method of SyslogStartConverter.getLocalHostname to handle the exception.

 (LOGBACK-749)