How to configure Microsoft NLB to enable HA in ArcGIS Enterprise?

Question

Hi all,

I’m currently trying to install ArcGIS Enterprise 10.7.1 High Availability in my environment as follow :

* Inside

*  2 servers for Portal for ArcGIS
*  2 servers for ArcGIS Server
* 2 servers for Data Store

& outside (DMZ)

* 2 servers for web adaptors

I'm using Microsoft NLB as a load balancer for this environment.

I tried to configure the load balancer as described in the link below to enable HA but I don't know where to set the X-Forwarded-Host header and where to set the load balancer context name.

Configure a highly available portal—Portal for ArcGIS (10.7 and 10.7.1) | ArcGIS Enterprise

Thanks for your help.

Zakaria.

Anonymous User · Answer

Jonathan Quinn thanks for your answer. What about the load balancer context name? is it also set in the ARR or the URL Rewrite module?

Thanks.

Zakaria

JonathanQuinn · Answer

NLB by itself doesn't support custom headers. You'll need to use NLB along with the URL Rewrite module or ARR to add the necessary headers as well as implement health checking:

URL Rewrite Module 2.0 Configuration Reference | Microsoft Docs

Application Request Routing : The Official Microsoft IIS Site