Varnish 🔗

The Splunk Distribution of OpenTelemetry Collector uses the Smart Agent receiver with the telegraf/varnish monitor type to collect Varnish metrics.

This integration is available on Kubernetes and Linux.

Benefits 🔗

After you configure the integration, you can access these features:

View metrics. You can create your own custom dashboards, and most monitors provide built-in dashboards as well. For information about dashboards, see View dashboards in Splunk 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 Use navigators in Splunk Infrastructure Monitoring.
Access the Metric Finder and search for metrics sent by the monitor. For information, see Search the Metric Finder and Metadata catalog.

This integration uses the varnishstat command. The Collector or Smart Agent must run on the same host as the Varnish server.

Run the following command to activate the Smart Agent to run the varnishstat command:

usermod -a -G varnish signalfx-agent

Follow these steps to deploy this integration:

Deploy the Splunk Distribution of OpenTelemetry Collector to your host or container platform:
- Install on Kubernetes
- Install on Linux
Configure the monitor, as described in the Configuration section.
Restart the Splunk Distribution of OpenTelemetry Collector.

To use this integration of a Smart Agent monitor with the Collector:

Include the Smart Agent receiver in your configuration file.
Add the monitor type to the Collector configuration, both in the receiver and pipelines sections.

To activate this integration, add the following to your Collector configuration:

receivers:
  smartagent/varnish:
    type: telegraf/varnish
    ...  # Additional config

Next, add the monitor to the service.pipelines.metrics.receivers section of your configuration file:

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

The following table shows the configuration options for this monitor:

Option	Required	Type	Description
`useSudo`	No	`bool`	If running as a restricted user, activate this flag to use `sudo`. The default value is `false`.
`binary`	No	`string`	The location of the `varnishstat` binary. The default value is `/usr/bin/varnishstat`.
`stats`	No	`list of strings`	Which stats to gather. You can use glob matching. For example, `stats = ["MAIN."]`. The default value is `[MAIN.]`.
`instanceName`	No	`string`	Optional name for the Varnish instance to query. The setting has the same effect of passing the `-n` parameter value.

The following metrics are available for this integration:

To learn more about the available in Observability Cloud see Metric types.
In host-based subscription plans, default metrics are those metrics included in host-based subscriptions in Observability Cloud, such as host, container, or bundled metrics. Custom metrics are not provided by default and might be subject to charges. See Metric categories for more information.
In MTS-based subscription plans, all metrics are custom.
To add additional metrics, see how to configure extraMetrics in Add additional metrics.

If you are not able to see your data in Splunk Observability Cloud, try these tips:

Submit a case in the Splunk Support Portal.
- Available to Splunk Observability Cloud customers
Call Splunk Customer Support
- Available to Splunk Observability Cloud customers
Ask a question and get answers through community support at Splunk Answers.
- Available to Splunk Observability Cloud customers and free trial users
Join the Splunk #observability user group Slack channel to communicate with customers, partners, and Splunk employees worldwide
- Available to Splunk Observability Cloud customers and free trial users
- To learn how to join, see Get Started with Splunk Community - Chat groups.

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