> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/resilience-testing/3.0/chaos-testing/probes/apm-probes.md).

# APM Probes

APM (Application Performance Monitoring) probes query metrics from your monitoring systems and compare them against expected values during chaos experiments. They use Harness Platform connectors to securely store credentials for the target APM system.

### When to use APM probes <a href="#when-to-use-apm-probes" id="when-to-use-apm-probes"></a>

Use APM probes when your application is monitored by an APM system and you want to observe how metrics behave under failure conditions. For example, you can track response times in Prometheus while injecting pod-delete faults, or monitor error rates in Datadog during a network disruption.

For pre-built Datadog APM probe templates (CPU, memory, latency, and error rate), go to [Datadog APM Probe Templates](/resilience-testing/chaos-testing/probes/probe-template-library/datadog/index.md).

### Configure APM Probes <a href="#configure-apm-probes" id="configure-apm-probes"></a>

Select the APM provider to view configuration details:

{% @harness-package-selector/package-selector platforms="%5B%7B%22label%22%3A%22Prometheus%22%2C%22slug%22%3A%22prometheus%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fprometheus-apm-probes%22%7D%2C%7B%22label%22%3A%22AppDynamics%22%2C%22slug%22%3A%22appdynamics%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fappdynamics-apm-probes%22%7D%2C%7B%22label%22%3A%22Splunk%20Observability%22%2C%22slug%22%3A%22splunk-observability%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fsplunk-observability-apm-probes%22%7D%2C%7B%22label%22%3A%22Splunk%20Enterprise%22%2C%22slug%22%3A%22splunk-enterprise%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fsplunk-enterprise-apm-probes%22%7D%2C%7B%22label%22%3A%22Dynatrace%22%2C%22slug%22%3A%22dynatrace%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fdynatrace-apm-probes%22%7D%2C%7B%22label%22%3A%22New%20Relic%22%2C%22slug%22%3A%22new-relic%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fnew-relic-apm-probes%22%7D%2C%7B%22label%22%3A%22GCP%20Cloud%20Monitoring%22%2C%22slug%22%3A%22gcp-cloud-monitoring%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fgcp-cloud-monitoring-apm-probes%22%7D%2C%7B%22label%22%3A%22Datadog%22%2C%22slug%22%3A%22datadog%22%2C%22path%22%3A%22resilience-testing%2Fchaos-testing%2Fprobes%2Fapm-probes%2Fdatadog-apm-probes%22%7D%5D" %}