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Configure multiple ArcGIS Web Adaptors

Multiple ArcGIS Web Adaptors will be required when configuring a highly available portal that uses web-tier authentication. To configure multiple Web Adaptors with Portal for ArcGIS, a single endpoint needs to be used to access the portal. This URL must be defined in the WebContextURL property. Multiple Web Adaptors can then be configured with the portal following the steps below.

  1. Configure the first ArcGIS Web Adaptor with your portal.
  2. Add Portal for ArcGIS to your reverse proxy server. Ensure you set the WebContextURL property as follows:
    1. Open a web browser and sign in to the ArcGIS Portal Directory as an Administrator of your organization. The URL is formatted
    2. Click System > Properties > Update Properties. This will cause the Portal for ArcGIS service to restart. You will need to wait for the restart to complete before continuing.
    3. On the Update System Properties dialog box, insert the following JSON, substituting your own reverse proxy server or DNS alias URL as seen by users outside your organization's firewall.
         "WebContextURL": ""
    4. Click Update Properties.
  3. Configure additional Web Adaptors.

All Web Adaptors configured with the portal will be listed on the configuration summary page. Users will access the portal site through the reverse proxy server or DNS alias URL.