<p>After deploying Che7 to our Kubernetes/EKS cluster in AWS, when trying to access:</p>
<p>https://{host}/dashboard/#/workspaces</p>
<p>Chrome console is reporting the following error:</p>
<blockquote>
<p>vendor.f84bf7019b48912e16e3.js:123 WebSocket connection to
'wss://{host}/api/websocket?token=...' failed: <br>UD: preload data
failed.</p>
</blockquote>
<p>Saw this page:
<a href="https://www.eclipse.org/che/docs/che-7/end-user-guide/troubleshooting-network-problems/" rel="nofollow noreferrer">https://www.eclipse.org/che/docs/che-7/end-user-guide/troubleshooting-network-problems/</a></p>
<p>But didn't provide much detailed instructions.</p>
<p>Is any special configuration necessary for Che7 to use Websockets when deploying in AWS EKS?</p>
<p>Thank you very much.</p>

kvjava1
<p>It should be fixed in the next release. See <a href="https://github.com/eclipse/che/issues/19434" rel="nofollow noreferrer">https://github.com/eclipse/che/issues/19434</a></p>
<p>Before it, modify your Che ingress to define websocket annotations.
Pay attention that workspaces may still fail to work since <a href="https://github.com/eclipse-che/che-server/pull/56" rel="nofollow noreferrer">https://github.com/eclipse-che/che-server/pull/56</a> is needed for them.</p>
