The logs_config.open_files_limit parameter in the Agent’s configuration file (/etc/datadog-agent/datadog.yaml) determines the maximum number of log files the Agent can tail simultaneously. This limit is set to prevent performance issues when wildcards are set on huge directories. You can increase the limit by adjusting this parameter.

logs_config:
  open_files_limit: 500

For containerized environments you can set the DD_LOGS_CONFIG_OPEN_FILES_LIMIT environment variable.

The default value varies depending on the Agent version and operating system. To check the default value for your Agent version, see the config_template.yaml file in the Datadog Agent repository. Be sure to select the tag corresponding to your Agent version to see the correct defaults.

Note: Increasing the tailed logs files limit might increase the resource consumption of the Agent.