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Node.js: Configure logs in context

APM logs in context connects your logs with all of your telemetry data for your apps, hosts, and other entities. Bringing all of this data together in a single tool helps you quickly:

  • Cut through the noise of thousands of logs when troubleshooting time-critical issues, so you automatically see only the most relevant logs.
  • Navigate within multiple types of telemetry data, and have the data correlate back to the original issue.
  • Easily drill down into more detailed information from the same place in the UI.
  • Find the log lines that you need to identify and resolve a problem.

For more information, including examples, learn how to get started with APM logs in context.

Automatic logs in context options

With application logging, your APM agent automatically collects and contextualizes your logs.

If you are using a supported framework, you have three options to configure APM logs in context to send your app's logs and linking metadata automatically to New Relic.

Supported frameworks for automatic logs in context include:

  • Winston 3.0.0 or higher.

  • Pino 7.0.0 or higher.

    Important

    Agent releases 8.16.0 and higher have this feature enabled in the agent configuration file by default.

    Agent log forwarding will cause an increase in the consumption of data when a supported framework is detected. The amount depends on the application and amount of logs it produces. This feature can be disabled. See Disable automatic logging for more information about your options.

    If you already have a log forwarding solution in place, you should disable this feature.

While you wait for your data to come in...

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Secure your data

Your logs may include sensitive information protected by HIPAA or other compliance protocols. By default we obfuscate number patterns that appear to be for items such as credit cards or Social Security numbers, but you may need to hash or mask additional information.

For more information, see our documentation about obfuscation expressions and rules. You can hash or mask your log data by using the New Relic UI or by using NerdGraph, our GraphQL API.

Explore your data

To make the most of your logging data:

  • On the APM Summary page, click your Web transaction time chart to view logs associated with a specific point in time.
  • Check your app's Errors inbox to view the logs associated with your errors.
  • Use distributed tracing to see the logs associated with individual traces.
  • Explore more logging data across your platform with our Logs UI.
  • Set up alerts based on log output and severity.
  • Query your data using our specialized UI for logs data, and create dashboards with the results.

Troubleshooting tips

Typically your logs will start to appear less than a minute after you enable APM logs in context. Check your app's Triage > Logs section. You will also start seeing log patterns related to the error there.

If you don't see any logs for errors or traces, there may not be any for your app. Try refreshing the UI page, or change the selected time period.

Disable automatic logging

APM logs in context automatically forwards APM agent log data. It is enabled by default. If you do enable application logging, it can have a negative impact on your security, compliance, billing, or system performance. For more information, or if you need to adjust the default setting, follow the procedures to disable automatic logging.

Manual logs in context option

To enable logs in context for APM apps monitored by Node.js, you can use our manual installation option.

  1. Make sure you have already set up logging in New Relic. This includes configuring a supported log forwarder that collects your application logs and extends the metadata that is forwarded to New Relic.
  2. Install or update to the latest Node.js agent version, and enable distributed tracing. Use Node.js agent version 6.2.0 or higher for logs in context.
  3. Install Winston 3.0.0 or higher or Pino 7.0.0 or higher to enrich your log data.
  4. In your agent configuration, set application_config.enabled to false. (Otherwise, the agent will automatically instrument your logger and calling these enrichers yourself will do nothing.)
  5. Configure logs in context for Node.js using the appropriate log extension.
  1. To verify that you have configured the log appender correctly, run your application, then check your logs data in New Relic using the query operator has:span.id has:trace.id.

If everything is configured correctly and your data is being forwarded to New Relic with the enriched metadata, your logs should now be emitted as JSON and contain trace.id and span.id fields. If you don't see log data in the UI, follow the troubleshooting procedures. If you'd like to see a working example of logs in context, take a look at our example application.

What's next?

After you set up APM logs in context, make the most of your logging data:

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