gitlab-org--gitlab-foss/doc/user/project/integrations/prometheus_library/haproxy.md

# Monitoring HAProxy
> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12621) in GitLab 9.4

GitLab has support for automatically detecting and monitoring HAProxy. This is provided by leveraging the [HAProxy Exporter](https://github.com/prometheus/haproxy_exporter), which translates HAProxy statistics into a Prometheus readable form.

## Metrics supported

| Name | Query |
| ---- | ----- |
| Throughput (req/sec) | sum(rate(haproxy_frontend_http_requests_total{%{environment_filter}}[2m])) |
| HTTP Error Rate (%) | sum(rate(haproxy_frontend_http_requests_total{code="5xx",%{environment_filter}}[2m])) / sum(rate(haproxy_frontend_http_requests_total{%{environment_filter}}[2m])) |

## Configuring Prometheus to monitor for HAProxy metrics

To get started with NGINX monitoring, you should install and configure the [HAProxy exporter](https://github.com/prometheus/haproxy_exporter) which parses these statistics and translates them into a Prometheus monitoring endpoint.

## Specifying the Environment label

In order to isolate and only display relevant metrics for a given environment
however, GitLab needs a method to detect which labels are associated. To do this, GitLab will [look for an `environment` label](metrics.md#identifying-environments).
Docs: fix HAProxy name and exporter's link 2017-07-25 17:12:33 -04:00			`# Monitoring HAProxy`
Add HA Proxy metrics, fix NGINX 2017-07-19 21:22:46 -04:00			`> [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12621) in GitLab 9.4`

Docs: fix HAProxy name and exporter's link 2017-07-25 17:12:33 -04:00			`GitLab has support for automatically detecting and monitoring HAProxy. This is provided by leveraging the [HAProxy Exporter](https://github.com/prometheus/haproxy_exporter), which translates HAProxy statistics into a Prometheus readable form.`
Add HA Proxy metrics, fix NGINX 2017-07-19 21:22:46 -04:00
			`## Metrics supported`

			`\| Name \| Query \|`
			`\| ---- \| ----- \|`
			`\| Throughput (req/sec) \| sum(rate(haproxy_frontend_http_requests_total{%{environment_filter}}[2m])) \|`
			`\| HTTP Error Rate (%) \| sum(rate(haproxy_frontend_http_requests_total{code="5xx",%{environment_filter}}[2m])) / sum(rate(haproxy_frontend_http_requests_total{%{environment_filter}}[2m])) \|`

Docs: fix HAProxy name and exporter's link 2017-07-25 17:12:33 -04:00			`## Configuring Prometheus to monitor for HAProxy metrics`
Add HA Proxy metrics, fix NGINX 2017-07-19 21:22:46 -04:00
Docs: fix HAProxy name and exporter's link 2017-07-25 17:12:33 -04:00			`To get started with NGINX monitoring, you should install and configure the [HAProxy exporter](https://github.com/prometheus/haproxy_exporter) which parses these statistics and translates them into a Prometheus monitoring endpoint.`
Add HA Proxy metrics, fix NGINX 2017-07-19 21:22:46 -04:00
			`## Specifying the Environment label`

			`In order to isolate and only display relevant metrics for a given environment`
			however, GitLab needs a method to detect which labels are associated. To do this, GitLab will [look for an `environment` label](metrics.md#identifying-environments).