2.3 KiB
description: Pantheon log level setting and log formatting path: blob/master/pantheon/src/main/resources/ source: log4j2.xml
Logging
Pantheon uses Log4J2 for logging. There are two methods to configure logging behavior:
- Basic - changes the log level.
- Advanced - configures the output and format of the logs.
!!!note For most use-cases, the basic method provides sufficient configurability.
Basic Log Level Setting
Use the --logging command line option to specify
the logging verbosity. The --logging option changes
the volume of events displayed in the log.
!!! tip
Use the admin_changeLogLevel API method
to change the log level while Pantheon is running.
Advanced Custom Logging
You can provide your own logging configuration using the standard Log4J2 configuration mechanisms. For example, the following Log4J2 configuration is the same as the default configuration except logging of stack traces for exceptions is excluded.
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO">
<Properties>
<Property name="root.log.level">INFO</Property>
</Properties>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSSZZZ} | %t | %-5level | %c{1} | %msg %throwable{short.message}%n" />
</Console>
</Appenders>
<Loggers>
<Root level="${sys:root.log.level}">
<AppenderRef ref="Console" />
</Root>
</Loggers>
</Configuration>
To use your custom configuration, set the environment variable LOG4J_CONFIGURATION_FILE to the
location of your configuration file.
If you have more specific requirements, you can create your own log4j2 configuration.
For Bash-based executions, you can set the variable for only the scope of the program execution by setting it before starting Pantheon.
!!!example To set the debug logging and start Pantheon connected to the Rinkeby testnet:
```bash
LOG4J_CONFIGURATION_FILE=./debug.xml pantheon --network=rinkeby
```