How to view tongweb logs correctly?

When using TongWeb There was a problem , The first processing method is to view TongWeb   logs In the catalog server.log.

Be careful ： Never view logs on the console , Irregular sorting , Fewer rows to browse , Why don't you just look at it server.log.

When something goes wrong , First collect TongWeb journal server.log, Collection rules ：

1.  If it is inevitable, clean it up TongWeb journal , Restart TongWeb, Collect data from... After running the application TongWeb After startup, the whole server.log journal .
2.  If there is an accidental problem , The retention TongWeb All logs since the start of operation ,  The time point when the problem occurred or the number of exception log lines should be indicated .
3.  It is forbidden to collect only one 、 Two sentences of error information , Ensure the integrity of the log , Should collect TongWeb The entire log from Startup to the time of the problem .
4.  Commonly used log4j Log output , Ensure the application of log4j The configuration is correct , Let the application log output in TongWeb In the log .

# log4j Example
log4j.rootLogger=INFO, CONSOLE, ROLLINGFILE
# The console outputs , The application log will be output in TongWeb Of server.log in
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=INFO
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} - %-5p [%t:%C{1}@%L] - %m%n
# Apply its own log file output
log4j.appender.ROLLINGFILE=org.apache.log4j.RollingFileAppender
log4j.appender.ROLLINGFILE.Threshold=DEBUG
log4j.appender.ROLLINGFILE.File=app.log

5.  It is most convenient to view logs in the form of text . If conditions do not permit , Use computer screenshots to cut all , Pay attention to improving the shooting level when taking photos with mobile phones 、 Shoot straight 、 Paiqing .

6.  Distinguish which are TongWeb Output log 、 What are the application output logs ,server.log in systemout The line represents the application output .

[2021-01-13 13:31:51 101] [WARNING] [http-nio2-8088-exec-4] [systemout] [javax.xml.soap.SOAPException: Unknown Protocol:   specified for creating MessageFactory]

The main points of ： Deploy 、 Run abnormally server.log journal 、 Garbled code analysis , Logs are not very useful .

see server.log The log is mainly used to view the root causes of application errors , Learn to find the root cause of abnormality , For example, the following .

Caused by: javax.naming.NameNotFoundException: Name "JDBC/DPORTAL" not found.
    at com.tongweb.tongejb.core.ivm.naming.IvmContext.federate(IvmContext.java:199)
    at com.tongweb.tongejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:151)
    at com.tongweb.tongejb.core.ivm.naming.OpenejbDelegateContext.lookup(OpenejbDelegateContext.java:48)
    at com.tongweb.tongejb.core.ivm.naming.ContextWrapper.lookup(ContextWrapper.java:137)
    at com.tongweb.tongejb.core.OpenEJBInitialContextFactory$LocalFallbackContextWrapper.lookup(OpenEJBInitialContextFactory.java:53)
    at com.tongweb.naming.SelectorContext.lookup(SelectorContext.java:163)
    at com.tongweb.naming.ThanosSelectorContext.lookup(ThanosSelectorContext.java:54)
    at javax.naming.InitialContext.lookup(InitialContext.java:417)
    at org.springframework.jndi.JndiTemplate$1.doInContext(JndiTemplate.java:155)
    at org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:88)
    at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:153)
    at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:178)
    at org.springframework.jndi.JndiLocatorSupport.lookup(JndiLocatorSupport.java:95)
    at org.springframework.jndi.JndiObjectLocator.lookup(JndiObjectLocator.java:105)
    at org.springframework.jndi.JndiObjectFactoryBean.lookupWithFallback(JndiObjectFactoryBean.java:200)
    at org.springframework.jndi.JndiObjectFactoryBean.afterPropertiesSet(JndiObjectFactoryBean.java:186)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
    ... 145 more
[2020-11-16 14:41:11] [SEVERE] [core] [One or more listeners failed to start. Full details will be found in the appropriate container log file]

Here is the deployment that has failed , Look at the following meaningless .
[2020-11-16 14:41:11] [SEVERE] [core] [Context [dportal] startup failed due to previous errors]
[2020-11-16 14:41:11] [INFO] [core] [Closing Spring root WebApplicationContext]
[2020-11-16 14:41:11] [INFO] [deployment] [Undeploying app: /opt/TongWeb7.0/deployment/dportal]
[2020-11-16 14:41:12] [SEVERE] [web-container] [Error deploying web application directory /opt/TongWeb7.0/deployment/dportal]
java.lang.RuntimeException: Start context failed.
    at com.tongweb.web.thanos.startup.ThanosHostConfig.deployWar(ThanosHostConfig.java:231)
    at com.tongweb.tw.thanos.ThanosWebtierWebAppBuilder.fireTomcatProcess(ThanosWebtierWebAppBuilder.java:416)
    at com.tongweb.tw.thanos.ThanosWebtierWebAppBuilder.deployApplication(ThanosWebtierWebAppBuilder.java:363)
    at com.tongweb.deploy.TongWebDeployer.deploy0(TongWebDeployer.java:204)
    at com.tongweb.deploy.TongWebDeployer.deploy(TongWebDeployer.java:164)
    at com.tongweb.deploy.commands.DeployCommand.deploy(DeployCommand.java:269)
    at com.tongweb.console.deployer.service.DeployerService.deploy(DeployerService.java:587)
    at com.tongweb.console.deployer.controller.DeployerController.deploy(DeployerController.java:361)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137)
    at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296)
    at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250)
    at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:237)
    at org.jboss.resteasy.springmvc.ResteasyHandlerAdapter.createModelAndView(ResteasyHandlerAdapter.java:96)
    at org.jboss.resteasy.springmvc.ResteasyHandlerAdapter.handle(ResteasyHandlerAdapter.java:82)
    at org.jboss.resteasy.springmvc.ResteasyHandlerAdapter.handle(ResteasyHandlerAdapter.java:26)

The following typical cases , Application connection nacos Failure , Actively close the application uninstall .

[com.alibaba.nacos.naming.push.receiver] [systemout] [2021-01-22 17:23:07.286 ERROR 75320 --- [g.push.receiver] com.alibaba.nacos.client.naming          : [NA] error while receiving push data
java.net.SocketException: Socket closed
    at java.net.PlainDatagramSocketImpl.receive0(Native Method)
    at java.net.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.java:143)
    at java.net.DatagramSocket.receive(DatagramSocket.java:812)
    at com.alibaba.nacos.client.naming.core.PushReceiver.run(PushReceiver.java:83)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)

[2021-01-22 17:23:07.286  INFO 75320 --- [o2-9060-exec-19] com.alibaba.nacos.client.naming          : com.alibaba.nacos.client.naming.backups.FailoverReactor do shutdown stop]
[2021-01-22 17:23:07.286  INFO 75320 --- [o2-9060-exec-19] com.alibaba.nacos.client.naming          : com.alibaba.nacos.client.naming.core.HostReactor do shutdown stop]
[2021-01-22 17:23:07.287  INFO 75320 --- [o2-9060-exec-19] com.alibaba.nacos.client.naming          : com.alibaba.nacos.client.naming.net.NamingProxy do shutdown begin]
[2021-01-22 17:23:07.287  WARN 75320 --- [o2-9060-exec-19] com.alibaba.nacos.client.naming          : [NamingHttpClientManager] Start destroying NacosRestTemplate]
[2021-01-22 17:23:07.287  WARN 75320 --- [o2-9060-exec-19] com.alibaba.nacos.client.naming          : [NamingHttpClientManager] Destruction of the end]
[2021-01-22 17:23:07.321  INFO 75320 --- [o2-9060-exec-19] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default']
[2021-01-22 17:23:07.324  INFO 75320 --- [o2-9060-exec-19] com.alibaba.druid.pool.DruidDataSource   : {dataSource-1} closing ...]
[2021-01-22 17:23:07.353  INFO 75320 --- [o2-9060-exec-19] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'scopedTarget.asyncExecutor']
[2021-01-22 17:23:07.394  INFO 75320 --- [o2-9060-exec-19] org.mongodb.driver.connection            : Closed connection [connectionId{localValue:2, serverValue:321}] to 192.168.0.101:27017 because the pool has been closed.]
[2021-01-22 17:23:07.396  INFO 75320 --- [o2-9060-exec-19] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'scopedTarget.springSessionRedisTaskExecutor']
[2021-01-22 17:23:07.396  INFO 75320 --- [o2-9060-exec-19] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'scopedTarget.commonAsyncExecutor']
[2021-01-22 17:23:07.401 ERROR 75320 --- [o2-9060-exec-19] o.s.boot.SpringApplication               : Application run failed

The most taboo way to provide logs ：

1.  Just send a lot of logs , No problem is described , Nor does it describe the number of lines and errors in the log when a problem occurs , Let others guess .

2.  Only send other people's chat records , Let others see the chat records and analyze the problems .

3.  Only send a personal log that I think has problems , Up and down incoherence , Make others unable to analyze .

[2020-11-30 13:27:11] [SEVERE] [data-source] [Unable to create initial connections of pool.]

4.  Just intercept the middle of the stack , I can't see the beginning and the end caused  by,  Make others unable to analyze .

5.  The picture is blurred 、 Askew . In the case of computer screen capture , Still use the mobile phone to shoot the screen at the computer .