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Questions tagged [log4j2]

Log4j 2 is an upgrade to Log4j, a Java-based logging utility, that provides significant improvements over its predecessor, Log4j 1.x, and provides many of the improvements available in Logback while fixing some inherent problems in Logback's architecture.

Log4j2 is a standalone upgrade to Log4j that provides significant improvements over its predecessor, Log4j 1.x, and provides many of the improvements available in Logback while fixing some inherent problems in Logback's architecture. Log4j2.x changes the API and is no longer downward compatible to log4j1.x

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log4j2 upgrade with log4j1 adapter email trigger not working

I upgraded my log4j2 from log4j1 with the help of log4j-1.2-api adapter as one of the api which I consume still using log4j1 so had to use the log4j1 adapter. After the upgrade i observed log4j2 is not triggering email. Except the dependency upgrade…
user1591156
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How to write Tibco rv appenders in log4j2? Does log4j2 support Tibco rv appenders?

We are migrating from log4j 1.x to log4j 2.3.2.Our code has few Tibco RV appenders in properties file like below: root.append.rv= rv.login.threshold=WARN How to do this in log4j2.3.2? Kindly help me with a sample code.
user15584948
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Hawtio Logs tab is not appearing in Hawtio 2.14.4

I'm not able to see Logs tab in Hawtio 2.14.4. We are using Hawtio to monitor Camel routes and message exchanges. Hawtio's hawtio-log plugin/dependency used to provide Log4jLogQuery class which we used to configure as spring bean as below and was…
Shubham Rathi
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Trying to exclude transitive Log4j dependency

So I've seen other posts (eg. Can't use hbase-shaded-client jar because of its internal dependency to log4j-1.2.17(CVE-2019-1757)) stating that they have a way to exclude the transitive dependency of log4j:log4j:1.2.17 however if I run ./gradlew…
c.s_._._
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Log4j2 configured from source code. Is there a way to dump an xml structure to inspect the configuration?

When the configuration is made from source code, I need a way to see what was configured without debugging the Java code. I would like to see the current configuration as an XML (similar to log4j2.xml file). …
Marian Tîrlea
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log4j2: Is there any way to display sql values in log4j2?

Right now my info logs only show sql queries with ? for values. Can you suggest me changes to log4j2.xml file to display values? log4j2.xml: %-5p:%d{dd-MMM-yyyy…
EManual
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Log4j 2 SLF4J Binding but SLF4J traces lost

In a "classic" Java development, without maven, we use a third party library that uses SLF4J. In this way: (Model A) import org.slf4j.Logger; import org.slf4j.LoggerFactory; ... private static final Logger log =…
JLLMNCHR
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How to implement Async loggers in log4j2.properties file on WebSphere Server?

Below is my log4j property file and I want to make all loggers asynchronous. our projects runs on WebSphere server and we use buld.xml to build the application. log4j.properties log4j.rootLogger=warn, stdout,…
Umesh Bichukale
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Duplicate events in Splunk with Kafka and log4j2

We are using log4j2 and kafkaAppender to send logs to a topic which is consumed by Splunk. Kafka topic has 5 partitions and 24 hour retention. All our services(~ 14) send log events to the same topic. Below is our log4j configuration:
Rahul
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Main application with external library and both using Log4j2

What is the best way to go about implementing an external library that uses Log4j2 when the main application that uses this external library also has their own Log4j2 implementation?
Jerome Sin
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How to solve log4j2 CVE (CVE-2021-44228) issues for application under JBoss 7.x

I've some issues in porting some application running in a JBoss 7.1 environment from log4j to log4j2. I've ported my SW to log4j2 (2.17.1), but that is not enough. I'm understanding that JBoss configuration changes - not so simple - are needed to…
SJB
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Coloured log output is not reflecting in log4j 2 after providing in xml

i have configured the below xml to get the coloured output in console, but still not getting the coloured o/p
jiju
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Unable to instantiate RollingFileAppender

I am trying to create a RollingFileAppender through java code. The below code always throws a null pointer Exception for the line appender.start() stating RollingFileAppender 'null': No name provided. I am unable to set the name because the name is…
Harish
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How to exclude a package from root tag in xml configuration log4j2

I am trying to disable the logging of a package for certain appenders, but I still have them logged everything else. I have tried: …
Illidan
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How do I use the Filtered Throwables feature to filter stack traces in log4j2?

I'm using Java with Spring Boot and I'm tired of combing through stack traces with 100+ lines that I don't care about. Since I use log4j2 (v2.17.1), I followed the manual (search "Filtered Throwables"), which says: Filtered Throwables This example…
jiangty
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