This is because the log4j.configuration expects the file to be in the classpath, while log4j.configurationFile expects it as a file path. If you add -Dlog4j2.debug=true to the VM arguments, you can see which file it is trying to load and will print its path. That way, you will have an indication of why the error … Read more
The DefaultRolloverStrategy will use the date pattern specified in the filePattern if a TimeBasedTriggeringPolicy is specified. To use the max attribute, specify a %i pattern in the filePattern, and add <SizeBasedTriggeringPolicy size=”20 MB” /> to the rollover policies. (Or some other size of course.) The value for max in <DefaultRolloverStrategy max=”5″/> will then ensure that … Read more
You could use the static method #initialize(String contextName, ClassLoader loader, String configLocation) (see source here) in org.apache.logging.log4j.core.config.Configurator. (You can pass null for the class loader.) Be aware that this class is not part of the public API so your code may break with any minor release. For completeness, you can also specify the location of … Read more
Works for me with eclipse: <Configuration strict=”true” xmlns=”http://logging.apache.org/log4j/2.0/config” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://logging.apache.org/log4j/2.0/config https://raw.githubusercontent.com/apache/logging-log4j2/master/log4j-core/src/main/resources/Log4j-config.xsd”> or against tagged version: <Configuration strict=”true” xmlns=”http://logging.apache.org/log4j/2.0/config” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://logging.apache.org/log4j/2.0/config https://raw.githubusercontent.com/apache/logging-log4j2/log4j-2.8.2/log4j-core/src/main/resources/Log4j-config.xsd”>
I think I found the solution. I downloaded log4j2-core-sources.jar and traced the source. You can write it as below; <Console name=”SlowConsole” target=”SYSTEM_OUT”> <PatternLayout disableAnsi=”false” pattern=”%highlight{%d{HH:mm:ss.SSS} %-5level %logger{36}.%M() @%L – %msg%n}{FATAL=red blink, ERROR=red, WARN=yellow bold, INFO=black, DEBUG=green bold, TRACE=blue}”/> </Console> I think log4j2 documentation and its examples may need to be updated.
This dependency help to avoid this error from lambda. <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-to-slf4j</artifactId> <version>2.8.2</version> </dependency>
You’re creating a call-loop with log4j-slf4j-impl-2.3.jar and log4j-to-slf4j-2.3.jar. log4j-slf4j-impl-2.3.jar is the implementation of the adapter that sends slf4j calls to log4j. log4j-to-slf4j-2.3.jar is sending log4j calls right back to slf4j. Remove this one.
For the newest version of log4j, here is what should work for loading an external log4j2.xml: String log4jConfigFile = System.getProperty(“user.dir”) + File.separator + “log4j2.xml”; ConfigurationSource source = new ConfigurationSource(new FileInputStream(log4jConfigFile)); Configurator.initialize(null, source);
CVE-2021-44228 Log4Shell Vulnerability If you can, upgrade to Log4j2 + Java versions as recommended by the security details on the Apache logging site. This site has changed since my original post; always follow recommended guidelines from the Apache website. The Apache site previously suggested some workarounds for the JNDI lookup vulnerability reported against earlier releases … Read more
h/t rgoers The FileAppender doesn’t support two dollar signs on the file name as the file is opened when the appender is started. What you are indicating with two dollar signs is that you want – potentially – a different file name for each event. With a single $ (as in ${sys:logFilename}), the system will … Read more