          sampling: 10
          custom_tags:
            my_tag_header:
              header:
                name: host
    spec:
      ...
</code></pre><h2 id=customizing-trace-sampling>Customizing Trace sampling</h2><p>The sampling rate option can be used to control what percentage of requests get
reported to your tracing system. This should be configured depending upon your
traffic in the mesh and the amount of tracing data you want to collect.
The default rate is 1%.</p><div><aside class="callout warn