Capture HAProxy activity in Datadog to:

• Visualize HAProxy load-balancing performance.
• Know when a server goes down.
• Correlate the performance of HAProxy with the rest of your applications.

The Haproxy check is included in the Datadog Agent package, so you don't need to install anything else on your Haproxy server.

The recommended way to set up this integration is by enabling the Prometheus endpoint on HAProxy. This endpoint is built into HAProxy starting with version 2 (enterprise version 1.9rc1). If you are using an older version, consider setting up the HAProxy Prometheus exporter, or alternatively set up the legacy socket-based integration described in the next section.

1. Configure your haproxy.conf using the official guide.

2. Enable the setting use_prometheus in haproxy.d/conf.yaml.

3. Restart HAProxy to enable the Prometheus endpoint.

4. Restart the Agent.

Note: This configuration strategy is provided as a reference for legacy users. If you are setting up the integration for the first time, consider using the Prometheus-based strategy described in the previous section.

The Agent collects metrics via a stats endpoint:

1. Configure one in your haproxy.conf:

     listen stats # Define a listen section called "stats"
     bind :9000 # Listen on localhost:9000
     mode http
     stats enable  # Enable stats page
     stats hide-version  # Hide HAProxy version
     stats realm Haproxy\ Statistics  # Title text for popup window
     stats uri /haproxy_stats  # Stats URI
     stats auth Username:Password  # Authentication credentials

2. Restart HAProxy to enable the stats endpoint.

To configure this check for an Agent running on a host:

Edit the haproxy.d/conf.yaml file, in the conf.d/ folder at the root of your Agent's configuration directory to start collecting your HAProxy metrics and logs. See the sample haproxy.d/conf.yaml for all available configuration options.

1. Add this configuration block to your haproxy.d/conf.yaml file to start gathering your Haproxy Metrics:

   init_config:
   
   instances:
     ## @param url - string - required
     ## Haproxy URL to connect to gather metrics.
     ## Set the according <USERNAME> and <PASSWORD> or use directly a unix stats
     ## or admin socket: unix:///var/run/haproxy.sock
     #
     - url: http://localhost/admin?stats

2. Restart the Agent.

Available for Agent versions >6.0

By default Haproxy sends logs over UDP to port 514. The Agent can listen for these logs on this port, however, binding to a port number under 1024 requires elevated permissions. Follow the instructions below to set this up. Alternatively, you can use a different port and skip step 3.

1. Collecting logs is disabled by default in the Datadog Agent, enable it in your datadog.yaml file:

   logs_enabled: true

2. Add this configuration block to your haproxy.d/conf.yaml file to start collecting your Haproxy Logs:

   logs:
     - type: udp
       port: 514
       service: <SERVICE_NAME>
       source: haproxy

   Change the service parameter value and configure it for your environment. See the sample haproxy.d/conf.yaml for all available configuration options.

3. Grant access to port 514 using the setcap command:

   sudo setcap CAP_NET_BIND_SERVICE=+ep /opt/datadog-agent/bin/agent/agent

   Verify the setup is correct by running the getcap command:

   sudo getcap /opt/datadog-agent/bin/agent/agent

   With the expected output:

   /opt/datadog-agent/bin/agent/agent = cap_net_bind_service+ep

   Note: Re-run this setcap command every time you upgrade the Agent.

4. Restart the Agent.

For containerized environments, see the Autodiscovery Integration Templates for guidance on applying the parameters below.

Available for Agent versions >6.0

Collecting logs is disabled by default in the Datadog Agent. To enable it, see Kubernetes log collection documentation.

Run the Agent's status subcommand and look for haproxy under the Checks section.

See metadata.csv for a list of metrics provided by this integration.

The Haproxy check does not include any events.

haproxy.backend_up:
Converts the HAProxy status page into service checks. Returns CRITICAL for a given service if HAProxy is reporting it down. Returns OK for maint, ok and any other state.

Need help? Contact Datadog support.

• Monitoring HAProxy performance metrics
• How to collect HAProxy metrics
• Monitor HAProxy with Datadog
• HA Proxy Multi Process Configuration
• How to collect HAProxy metrics