How to solve clusterissuer challenge timeouts?

Setup: DO K8S Cluster w/ 2 nodes and 1 Ingress-NGINX LoadBalancer

I was wondering why certificate requests fail and found in the logs of the Challenge, that the self check GET request runs into timeout.

After looking closer the issue seems that when I try to make curl requests to my LoadBalancer public IP from inside of running pods, only the pods running on the node that the LoadBalancer currently points not to can make successful requests. All other requests from pods running on the other node are getting timeout.

Any advice on how to solve this? Thanks!


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Accepted Answer

Posted the same issue on SO, and already got an answer there:

For me, this is an acceptable workaround for now. Hope this can help you.

same problem here, I can access the acme file from other machines, but not from a pod running on a node behind the load balancer.

I have another cluster setup a while ago and from there the challenge worked without issues.