Configure the Console outputedit

This documentation refers to configuring the standalone (legacy) APM Server. This method of running APM Server will be deprecated and removed in a future release. Please consider upgrading to Fleet and the APM integration.

The Console output writes events in JSON format to stdout.

The Console output should be used only for debugging issues as it can produce a large amount of logging data.

To use this output, edit the APM Server configuration file to disable the Elasticsearch output by commenting it out, and enable the console output by adding output.console.

Example configuration:

  pretty: true

Configuration optionsedit

You can specify the following output.console options in the apm-server.yml config file:


The enabled config is a boolean setting to enable or disable the output. If set to false, the output is disabled.

The default value is true.


If pretty is set to true, events written to stdout will be nicely formatted. The default is false.


Output codec configuration. If the codec section is missing, events will be json encoded using the pretty option.

See Change the output codec for more information.


The maximum number of events to buffer internally during publishing. The default is 2048.

Specifying a larger batch size may add some latency and buffering during publishing. However, for Console output, this setting does not affect how events are published.

Setting bulk_max_size to values less than or equal to 0 disables the splitting of batches. When splitting is disabled, the queue decides on the number of events to be contained in a batch.