ef=/v1.9/docs/setup/>Installation guide</a>.</p></li><li><p>Start the <a href=https://github.com/istio/istio/tree/release-1.9/samples/sleep>sleep</a> sample
which will be used as a test source for external calls.</p><p>If you have enabled <a href=/v1.9/docs/setup/additional-setup/sidecar-injection/#automatic-sidecar-injection>automatic sidecar injection</a>, do</p><div><a data-skipendnotes=true style=display:none href=https://raw.githubusercontent.com/istio/istio/release-1.9/samples/sleep/sleep.yaml>Zip</a>