Docs » Configure application receivers » Configure application receivers for hosts and servers » Apache HTTP Server

Apache HTTP Server 🔗

Description 🔗

The Splunk Distribution of OpenTelemetry Collector provides this integration as the Apache HTTP Server monitor with the SignalFx Smart Agent receiver. The integration monitors Apache web servers using information mod_status provides.

This monitor is available on Kubernetes, Linux, and Windows.

Apache worker threads can be in one of the following states:

State Remark
Open Open (unused) slot - no process
Waiting Idle and waiting for request
Sending Serving response
KeepAlive Kept alive for possible next request
Idle_cleanup Idle and marked for cleanup
Closing Closing connection
Logging Writing to log file
Reading Reading request
Finishing Finishing as part of graceful shutdown
Starting Starting up to serve

Benefits 🔗

After you’ve configured the integration, you can:

  • View metrics using the built-in dashboard. For information about dashboards, see View dashboards in Observability Cloud.

  • View a data-driven visualization of the physical servers, virtual machines, AWS instances, and other resources in your environment that are visible to Infrastructure Monitoring. For information about navigators, see Splunk Infrastructure Monitoring navigators.

  • Access Metric Finder and search for metrics sent by the monitor. For information about Metric Finder, see Use the Metric Finder.

Installation 🔗

Follow these steps to deploy the integration:

  1. Deploy the Splunk Distribution of OpenTelemetry Collector to your host or container platform:

  2. Configure the monitor, as described in the next section.

  3. Restart the Splunk Distribution of OpenTelemetry Collector.

Configuration 🔗

This monitor is available in the Smart Agent Receiver, which is part of the Splunk Distribution of OpenTelemetry Collector. The Smart Agent Receiver lets you use existing Smart Agent monitors as OpenTelemetry Collector metric receivers.

Using this monitor assumes that you have a configured environment with a functional Smart Agent release bundle on your system, which is already provided for x86_64/amd64 Splunk Distribution of OpenTelemetry Collector installation paths.

To activate this monitor in the Splunk Distribution of OpenTelemetry Collector, add the following to your configuration file:

receivers:
  smartagent/apache
    type: collectd/apache
    ... # Additional config

To complete the integration, include the monitor in a metrics pipeline. To do this, add the monitor to the service > pipelines > metrics > receivers section of your configuration file. For example:

service:
  pipelines:
    metrics:
      receivers: [smartagent/apache]

Configuration settings 🔗

The following configuration options are available for this monitor:

Options Required Type Description
host yes string The hostname of the Apache server
port yes integer The port number of the Apache server
name no string This will be sent as the plugin_instance dimension and can be any name you like.
url no string The URL, either a final URL or a Go template that will be populated with the host and port values. (default: http://{{.Host}}:{{.Port}}/mod_status?auto)
username no string
password no string

Apache configuration 🔗

After you deploy the monitor in the Splunk Distribution of OpenTelemetry Collector, follow these steps to configure the Apache web server to expose status metrics:

  1. Enable the mod_status module in your Apache server. Make sure that the URL you provide for your mod_status module ends in ?auto. This returns the status page as text/plain, which the monitor requires.

  2. Add the following configuration to your Apache server:

     ExtendedStatus on
     <Location /mod_status>
     SetHandler server-status
     </Location>
    
  3. Restart the Apache web server.

Metrics 🔗

These metrics are available for this integration.

Troubleshooting 🔗

If you are not able to see your data in Splunk Observability Cloud:

  • Ask questions and get answers through community support at Splunk Answers.

  • If you have a support contract, file a case using the Splunk Support Portal. See Support and Services.

  • To get professional help with optimizing your Splunk software investment, see Splunk Services.