I have an application deployed on OpenShift Container Platform v3.6. It consists of multiple services interconnected to each other.
The frontend service calls a time consuming function of the backend service (through a REST call), but after 30 seconds it receives a "504 Gateway Timeout" message. Frontend runs over nginx, but I've already configured it with long proxy send/read timeouts, so the 504 message doesn't come from it. I think it comes from the Service Proxy component of OpenShift Platform, but I can't find out where and how configure a kind of service proxy timeout. I know the existence of HAProxy timeout for external routes, but my services leave in the same cluster application and communicate each other via OpenShift Container Platform DNS.
Could be a Service Proxy timeout issue? How can it be configured?
Thanks!
Your route timeout is the culprit. The haproxy ingress router is terminating the request. You can configure the timeout by following the docs below:
https://docs.openshift.com/container-platform/3.5/install_config/configuring_routing.html
For example:
# Set the timeout on 'longrunningroute' to five minutes.
oc annotate route longrunningroute --overwrite haproxy.router.openshift.io/timeout=5m