node-timeout is an attribute set via worker

node-timeout
Timeout (in seconds) for proxy connections to a node. That is the time mod_cluster will wait for the back-end response before returning error. That corresponds to timeout in the worker mod_proxy documentation. A value of -1 indicates no timeout. Note that mod_cluster always uses a cping/cpong before forwarding a request and the connectiontimeout value used by mod_cluster is the ping value.

Reproducing:

1. Set up undertow as proxy balancer
2. Set up worker with node-timeout to 10

   /subsystem=modcluster/mod-cluster-config=configuration:write-attribute(name=node-timeout, value=10)

   or

   /subsystem=modcluster/proxy=default:write-attribute(name=node-timeout, value=10)

3. Deploy app that with sleep for 15 seconds
4. Request send via balancer to deployed app should return 50x after 10 seconds, but is returning 200 after 15 seconds