<p>I have setup Kubernetes in CentOS with 1 master and a separate node. Added Ambassador GW and later a service with mapping. When I try to access the end service using the GW mapping it responds with <code>no healthy upstream</code> message.</p>

<p>In my case the mapping was right but the service was actually in different namespace than Ambassador. I was missing the <code>.namespace</code> in the service name:</p>

<p>So change the service from
<code>service: &lt;service.name&gt;</code>
to <br><code>service: &lt;service.name&gt;.&lt;namespace&gt;</code></p>
