configure Multiple OAS instance with OHS

Question

Hello All,

Could you please suggest the configuration changes to OHS (Webapp1 instance) for 2nd OAS instance (APPHOST2), so that when the oas instance1 down then ohs to route 2nd OAS instance (APPHOST2). what are all the places I have to add Apphostname2 and list of ports

Thank you,

NR

Gianni Ceresa · Accepted Answer

Hi,

I don't have OHS but, in my memory, it is just a custom version of Apache HTTP Server.

This means that there are good chances you can just configure it just like you would do it for an Apache HTTP Server.

https://httpd.apache.org/docs/trunk/howto/reverse_proxy.html#cluster

The thing is that I'm not sure OHS can be as smart as a load balancer as what you are requesting.

If you look at the Enterprise Deployment Topology, you can see that the load balancer is in front of OHS. Most proper load balancer can behave how you describe, sending all the traffic to a backend server and if that one doesn't answer send to the other one.

All in all, the behaviour you expect isn't "natural", and therefore will require more work, and probably extra pieces added than just a simple change in OHS.