https://www.varnish.org/docs/tutorials/tags/probe/Recent content in Probe on Varnish CacheHugoen-usFri, 01 Oct 2021 00:00:00 +0000https://www.varnish.org/docs/tutorials/vcl-backend-probe-basic-authentication/Fri, 01 Oct 2021 00:00:00 +0000https://www.varnish.org/docs/tutorials/vcl-backend-probe-basic-authentication/<p>When your Varnish server proxies requests to a backend that requires authorized access via <em>basic authentication</em>, you need to ensure that the right <code>Authorization</code> header is sent for each probe request.</p> <h2 id="1-initial-situation">1. Initial situation</h2> <p>Your initial backend setup will have a backend that may contain a <code>.probe {}</code> definition.</p> <p>This health-checking probe will send HTTP requests to your backend server at regular intervals. As long as a <code>200</code> status code is returned, the backend is considered healthy.</p>