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stage: Monitor
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group: Monitor
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Monitoring AWS resources **(FREE)**
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GitLab supports automatically detecting and monitoring AWS resources, starting
with the [Elastic Load Balancer ](https://aws.amazon.com/elasticloadbalancing/ ) (ELB).
This is provided by leveraging the official [Cloudwatch exporter ](https://github.com/prometheus/cloudwatch_exporter ), which translates [Cloudwatch metrics ](https://aws.amazon.com/cloudwatch/ ) into
a Prometheus readable form.
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## Requirements
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You must enable the [Prometheus service ](../prometheus.md ).
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## Supported metrics
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| Name | Query |
|----------------------|-------|
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| Throughput (req/sec) | `sum(aws_elb_request_count_sum{%{environment_filter}}) / 60` |
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| Latency (ms) | `avg(aws_elb_latency_average{%{environment_filter}}) * 1000` |
| HTTP Error Rate (%) | `sum(aws_elb_httpcode_backend_5_xx_sum{%{environment_filter}}) / sum(aws_elb_request_count_sum{%{environment_filter}})` |
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## Configuring Prometheus to monitor for Cloudwatch metrics
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To get started with Cloudwatch monitoring, install and configure the
[Cloudwatch exporter ](https://github.com/prometheus/cloudwatch_exporter ). The
Cloudwatch exporter retrieves and parses the specified Cloudwatch metrics, and
translates them into a Prometheus monitoring endpoint.
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The only supported AWS resource is the Elastic Load Balancer, whose Cloudwatch
metrics are [documented here ](https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-cloudwatch-metrics.html ).
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You can [download a sample Cloudwatch Exporter configuration file ](../samples/cloudwatch.yml )
that's configured for basic AWS ELB monitoring.
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## Specifying the Environment label
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To isolate and display only the relevant metrics for a given environment,
GitLab needs a method to detect which labels are associated. To do this, GitLab
[looks for an `environment` label ](index.md#identifying-environments ).
