   literal:
              value: &lt;VALUE&gt;
</code></pre></li><li><p>Environmental variables can be used where the value of the custom tag is
populated from a workload proxy environment variable.</p><pre><code class=language-yaml data-expandlinks=true data-repo=istio>apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
spec:
  meshConfig:
    defaultConfig:
      tracing:
        custom_tags:
          my_tag_env:
            environment:
              name: &lt;ENV_VARIABLE_NAME&gt;
              d