istio.io/content/docs/reference/config/policy-and-telemetry/adapters/zipkin/index.html

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---
title: Zipkin
description: Adapter to deliver tracing data to Zipkin.
location: https://istio.io/docs/reference/config/policy-and-telemetry/adapters/zipkin.html
layout: protoc-gen-docs
generator: protoc-gen-docs
supported_templates: tracespan
number_of_entries: 1
---
<p>The <code>zipkin</code> adapter enables Istio to deliver tracing data to the
<a href="https://cloud.google.com/zipkin/">Zipkin</a> tracing backend.</p>
<p>This adapter supports the <a href="/docs/reference/config/policy-and-telemetry/templates/tracespan/">tracespan template</a>.</p>
<h2 id="Params">Params</h2>
<section>
<p>Configuration format for the <code>zipkin</code> adapter.</p>
<table class="message-fields">
<thead>
<tr>
<th>Field</th>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr id="Params-url">
<td><code>url</code></td>
<td><code>string</code></td>
<td>
<p>URL of Zipkin HTTP endpoint.</p>
<p>Required.</p>
</td>
</tr>
<tr id="Params-sample_probability">
<td><code>sampleProbability</code></td>
<td><code>double</code></td>
<td>
<p>Uniform probability that a trace will be sampled.
Defaults to 0 (sampling disabled) if unset.</p>
<p>Optional.</p>
</td>
</tr>
</tbody>
</table>
</section>