log4j

Logging Spring bean initialization with Log4J

由 拈花ヽ惹草 提交于 2019-12-21 04:10:42
问题 When I run my application, it stops when beans are initializing but doesn't show any logs entries. So I don't know what happened: Log4j.properties log4j.rootLogger=DEBUG, stdout, R log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout org.springframework=DEBUG org.springframework.beans.factory.support=DEBUG log4j.logger.org.springframework.beans.factory.support=DEBUG log4j.logger.org.springframework.beans=DEBUG log4j.category.org

ELK日志分析平台搭建

由 旧巷老猫 提交于 2019-12-21 04:01:30
ELK平台介绍 在搜索ELK资料的时候，发现这篇文章比较好，于是摘抄一小段： 以下内容来自： http://baidu.blog.51cto.com/71938/1676798 日志主要包括系统日志、应用程序日志和安全日志。系统运维和开发人员可以通过日志了解服务器软硬件信息、检查配置过程中的错误及错误发生的原因。经常分析日志可以了解服务器的负荷，性能安全性，从而及时采取措施纠正错误。 通常，日志被分散的储存不同的设备上。如果你管理数十上百台服务器，你还在使用依次登录每台机器的传统方法查阅日志。这样是不是感觉很繁琐和效率低下。当务之急我们使用集中化的日志管理，例如：开源的syslog，将所有服务器上的日志收集汇总。 集中化管理日志后，日志的统计和检索又成为一件比较麻烦的事情，一般我们使用grep、awk和wc等Linux命令能实现检索和统计，但是对于要求更高的查询、排序和统计等要求和庞大的机器数量依然使用这样的方法难免有点力不从心。 开源实时日志分析ELK平台能够完美的解决我们上述的问题，ELK由ElasticSearch、Logstash和Kiabana三个开源工具组成。官方网站： https://www.elastic.co/products Elasticsearch是个开源分布式搜索引擎，它的特点有：分布式，零配置，自动发现，索引自动分片，索引副本机制，restful风格接口

【Tomcat】tomcat logs 目录下各日志文件的含义

由 风流意气都作罢 提交于 2019-12-21 03:51:25
　　tomcat每次启动时，自动在logs目录下生产以下日志文件，按照日期自动备份。可以帮助我们更好的找出错误。 一、　　认识各种目录的作用及记录的信息 目录 1.catalina.日期.log 　 　这个主要是记录tomcat启动时候的信息，类似于我们在eclipse中启动服务的时候在控制台看到的信息。在里面可以看到 启动的JVM参数以及操作系统 等日志信息。 如果没有使用log4j等日志机制，系统的的错误信息与打印语句也在这个日志文件中记录。( linux下所有的日志都在catalina.out中 ) 例如: 十二月 14, 2017 11:04:27 下午 org.apache.tomcat.util.digester.SetPropertiesRule begin 警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'debug' to '0' did not find a matching property. 十二月 14, 2017 11:04:27 下午 org.apache.tomcat.util.digester.SetPropertiesRule begin 警告: [SetPropertiesRule]{Server/Service/Engine/Host

Log4j show package name

由 牧云@^-^@ 提交于 2019-12-21 03:48:25
问题 Right now for my ConversionPattern I have: log4j.appender.A1.layout.ConversionPattern=%d{yyyy MMM dd HH:mm:ss,SSS} %5p [%t] (%F:%L) - %m%n What I'd like to do is also include the full package name with the class (%F:%L) but I can't find any config to do so in the docs. I do understand that this will be slower, but it's only for debugging and not when the system will be in production. 回答1: Maybe I just misunderstand you, but %C will output your class with package. From your referenced docs: %C

can we change the logging level of log4j at runtime

由 给你一囗甜甜゛ 提交于 2019-12-21 03:46:22
问题 i have an issue, i want to change the logging level of log4j at runtime, i have tried many things with log4j.properties file, i have also tried to written a code which after particular time again reads the properties file and again configure the logger. but the problem is, i want to change the logging level to DEBUG for one API call, and then when that call is completed, the logger should again change to the previous value.. please help.. 回答1: Calling the Logger.setLevel method with the

what is the right way to use log4j within jsp pages

由 浪子不回头ぞ 提交于 2019-12-21 03:38:14
问题 I mean, I want the logger name to reflect the source.jsp file, no matter if it is included in another file or compiled to a class or whatever. 回答1: What's wrong with: Logger logger = Logger.getLogger( "source.jsp" ); You can prepend it with a better non-ambiguous prefix, of course. Actually, something along the lines JSPS.source.jsp is better, as you can set up logging rules for JSPS logger, that would later be applied to all sub-loggers. Having said this, why do you need to log from JSP

How to add the Process id to a LOG4J log file?

由 喜夏-厌秋 提交于 2019-12-21 03:37:23
问题 I currently have the below pattern layout in log4j. I want to add the Process id to the log file. How can I do it? log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n Pasted sample log message 2011-01-07 11:48:21,940 [main] INFO Testing1 2011-01-07 11:48:21,942 [main] INFO Test.common.ApplicationProperties - Used log4j log4j.properties "log4j.properties" [Read only] 26 lines, 884 characters log4j.rootCategory=DEBUG, stdout,

Log4J Swing Appender

由 给你一囗甜甜゛ 提交于 2019-12-21 03:33:14
问题 I need to append log4j content to a Swing component (JTextArea or similar). Is there a common way to do this? 回答1: Instead of introducing an external library, I ended up editing the log4j.properties file to include the following: log4j.rootCategory=DEBUG, app log4j.appender.app=path.to.class.extending.WriterAppender Then I employed an observer pattern to post the data into my GUI's JTextArea. 回答2: Thanks to Google, I've obviously discovered the Log4j-Swing-Appender. 回答3: to make the

Log4J Swing Appender

由 心已入冬 提交于 2019-12-21 03:33:06
问题 I need to append log4j content to a Swing component (JTextArea or similar). Is there a common way to do this? 回答1: Instead of introducing an external library, I ended up editing the log4j.properties file to include the following: log4j.rootCategory=DEBUG, app log4j.appender.app=path.to.class.extending.WriterAppender Then I employed an observer pattern to post the data into my GUI's JTextArea. 回答2: Thanks to Google, I've obviously discovered the Log4j-Swing-Appender. 回答3: to make the

override log4j.properties in hadoop

由 痴心易碎 提交于 2019-12-21 03:32:11
问题 How do I override the default log4j.properties in hadoop? If I set the hadoop.root.logger=WARN,console, it doesnot print the logs on the console, whereas what I want is that it shouldn't print the INFO in the logs file. I added a log4j.properties file in my jar, but I am unable to override the default one. In short, I want the log file to print only the errors and warnings. # Define some default values that can be overridden by system properties hadoop.root.logger=INFO,console hadoop.log.dir=
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