Introductionedit

Welcome to the APM Java Agent documentation.

Elastic APM automatically measures the performance of your application and tracks errors. For example, it records spans for database queries and transactions for incoming HTTP requests. See Supported technologiesedit to learn about which frameworks and technologies the Elastic APM Java agent supports out-of-the-box.

Spans are grouped in transactions - by default one for each incoming HTTP request. But it’s possible to create custom transactions not associated with an HTTP request.

By default the agent comes with support for common frameworks out-of-the-box. To instrument other events, you can use custom spans. For information about custom spans, see the public api documentation.

The agent is only one of multiple components you need to get started with APM. Please also have a look at the documentation for

Get startededit

The first step in getting started with the Elastic APM Java agent is to download the latest release of the agent jar file from maven central.

Note

Don’t declare a dependency to the agent in your application.

Configurationedit

Once you are set with instrumenting your favorite framework, see the configuration guide on how to configure Elastic APM.

Add javaagent flagedit

When starting your application, add the JVM flag -javaagent:/path/to/elastic-apm-agent-<version>.jar

Add javaagent flag for a Spring Boot applicationedit

Start your spring application and add the -javaagent JVM flag:

java -javaagent:/path/to/elastic-apm-agent-<version>.jar -jar my-spring-boot-application.jar

Add javaagent flag for Apache Tomcatedit

Create $CATALINA_BASE/bin/setenv.sh (or modify if the file already exists).

Add the following line:

setenv.sh. 

export CATALINA_OPTS="$CATALINA_OPTS -javaagent:/path/to/elastic-apm-agent-<version>.jar"

Supported technologiesedit

Please check the supported technologies page whether the Elastic APM agent supports auto-instrumentation of the technologies your application is using.