log4j

Can log4j inherit xml from a base/root element?

ⅰ亾dé卋堺 提交于 2019-12-05 01:12:54
I'm trying to reduce duplication in my log4j configuration and wanted to know if I could push similar config down to a root.xml file and inherit from it in each of the child log4j.xml files? Thank you! AFAIK there's no "native" inheritance mechanism, but you may achieve the same result using an entity to reference and include an external xml fragment (see this nabble thread ). If you just want to modify certain properties, a similar solution is described here . An Example using external entities: Main Config (log4j.xml): <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration

log4j category

点点圈 提交于 2019-12-05 01:05:29
问题 I have the following on my log4j.properties log4j.rootLogger = debug, stdout, fileLog log4j.appender.stdout = org.apache.log4j.ConsoleAppender log4j.appender.fileLog = org.apache.log4j.RollingFileAppender log4j.appender.fileLog.File = C:/logs/services.log log4j.appender.fileLog.MaxFileSize = 256MB log4j.appender.fileLog.MaxBackupIndex = 32 #Category: ConsultaDados log4j.category.ConsultaDados=ConsultaDados log4j.appender.ConsultaDados=org.apache.log4j.DailyRollingFileAppender log4j.appender

logback日志配置说明

♀尐吖头ヾ 提交于 2019-12-05 01:03:10
注意事项: logback和logback-spring.xml都可以用来配置logback,但是2者的加载顺序是不一样的。 logback.xml--->application.properties--->logback-spring.xml. logback.xml加载早于application.properties,所以如果你在logback.xml使用了变量时,而恰好这个变量是写在application.properties时,那么就会获取不到,只要改成logback-spring.xml就可以解决。 1、logback.xml配置示例 相关jar logback-core:核心代码模块 logback-classic:log4j的一个改良版本,同时实现了 slf4j 的接口,这样你如果之后要切换其他日志组件也是一件很容易的事 logback-access:访问模块与Servlet容器集成提供通过Http来访问日志的功能 <!--这个依赖直接包含了 logback-core 以及 slf4j-api的依赖--> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.3</version> </dependency> 配置文件说明

CDHkafka脚本

僤鯓⒐⒋嵵緔 提交于 2019-12-05 01:01:01
启动客户端的命令 /opt/cloudera/parcels/KAFKA-4.0.0-1.4.0.0.p0.1/bin/kafka-console-producer --broker-list hadoop102:9092 --topic topic_start 去上面目录下找到kafka-console-consumer #!/bin/bash # Reference: http://stackoverflow.com/questions/59895/can-a-bash-script-tell-what-directory-its-stored-in SOURCE="${BASH_SOURCE[0]}" BIN_DIR="$( dirname "$SOURCE" )" while [ -h "$SOURCE" ] do SOURCE="$(readlink "$SOURCE")" [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" BIN_DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )" done BIN_DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )" LIB_DIR=$BIN_DIR/../lib # Autodetect JAVA_HOME

第9章-构建Hadoop集群-系统日志文件相关知识点

£可爱£侵袭症+ 提交于 2019-12-05 00:56:47
相关资料:《 Hadoop 各种日志文件总结 》 1、默认情况下,Hadoop生成的系统日志文件存放在哪儿? 默认情况下,Hadoop生成的系统日志文件存放在$HADOOP_INSTALL/logs目录之中。 2、Hadoop系统日志文件存放位置在哪儿修改? 默认系统日志在在$HADOOP_INSTALL/logs目录,也可通过hadoop-env.sh文件的HADOOP_LOG_DIR修改。 3、为什么建议修改Hadoop系统日志文件默认配置,使之独立于Hadoop安装目录? 建议修改默认配置,使之独立于Hadoop的安装目录。这样的话,即使Hadoop升级之后安装路径发生变化,也不会影响日志文件的位置。 通常可以将日志文件存放在/var/log/hadoop目录中。实现方法: 在hadoop-env.sh中加入行:export HADOOP_LOG_DIR=/var/log/hadoop 4、Hadoop守护进程会产生两类日志文件 各台机器上的各个Hadoop守护进程均会产生两类日志文件: 1)、以.log作为后缀名通过log4j记录的 5、在对问题进行故障诊断时,需要先查看哪个日志文件? 鉴于大部分应用程序的日志消息都写到以.log作为后缀名通过log4j记录的日志文件中,在对问题进行故障诊断时需要先查看这个文件。 6、标准的Hadoop

Logging activities in multithreaded applications

空扰寡人 提交于 2019-12-05 00:44:56
问题 I have a layered application in Java which has a multi thread data access layer which is invoked from different points. A single call to this layer is likely to spawn several threads to parallelize requests to the DB. What I'm looking for is a logging tool that would allow me to define "activities" that are composed by various threads. Therefore, the same method in the data access layer should log different outputs depending on its caller. The ability to group different outputs to summarize

log4j properties: LevelMatchFilter doesn't work

好久不见. 提交于 2019-12-05 00:30:39
问题 I was trying to route my Logging to two different files: one for INFO messages and another one for ERRORs. LevelMatchFilter seemed the right way to go. Unfortunately, all messages are logged to my info.log, not just the INFO messages. Any ideas what I did wrong? Here's my config: # Define the root logger with appender file log4j.logger.com.my.class.ClassName=DEBUG, FILE, ERR, CA # Define the info file appender log4j.appender.FILE=org.apache.log4j.FileAppender log4j.appender.FILE.File=info.log

Is there a log4j appender that connects with TestNG?

流过昼夜 提交于 2019-12-05 00:24:32
问题 I use log4j and would like log messages that normally end up in my logging facility to appear in the test reports created by TestNG during my unit tests. I think that would mean a log4j Appender which outputs to a TestNG Listener and an appropriate log4j config in the src/test/resources directory of my Maven project. Is that correct? It seems fairly easy to write, but is there something I just can pull in via Maven? 回答1: I had the same problem and eventually coded an appender myself. It is

Logback losing my log messages to file

和自甴很熟 提交于 2019-12-05 00:21:03
问题 I wrote a test program to verify the performance improvements of logback over log4j. But to my surprise, I ran into this strange problem. I am writing some 200k log messages in a loop to a file using their Async and file appenders. But, every time, it only logs some 140k or so messages and stops after that. It just prints my last log statement indicating that it has written everything in the buffer and the program terminates. If I just run the same program with Log4j, i can see all 200k

Liferay logging level

橙三吉。 提交于 2019-12-04 23:43:20
问题 Is there a way to set Liferay's global logging level? I am aware of it's console in the Server Administration but I want to set a global level not to a package level. Thanks! 回答1: Because of the way log4j can be configured, any global setting can be overridden by a package level setting. You can remove any configuration individual packages (if you have any). Then the setting for the rootLogger will take effect. log4j.rootLogger=INFO, stdout Update To override Liferay's default logging