Docs » Available host and application monitors » 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 and Linux.

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 configure the integration, you can access these features:

Installation 🔗

Follow these steps to deploy this integration:

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

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

  3. Restart the Splunk Distribution of OpenTelemetry Collector.

Configuration 🔗

This monitor type is available in the Smart Agent Receiver, which is part of the Splunk Distribution of OpenTelemetry Collector. You can use existing Smart Agent monitors as OpenTelemetry Collector metric receivers with the Smart Agent Receiver.

This monitor type requires a properly configured environment on your system in which you’ve installed a functional Smart Agent release bundle. The Collector provides this bundle in the installation paths for x86_64/amd64.

To activate this monitor type in the Collector, add the following lines to your configuration (YAML) 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, try these tips:

To learn about even more support options, see Splunk Customer Success.