[GIS] ArcGIS server 10.3 fails to add machines to the cluster “Unable to access the config store”

arcgis-10.3arcgis-serverclusteringinstallation

Trying to Apply cluster scenario for ArcGIS Server on a test environment, 2 servers Node-02 and Node-03 these 2 servers are connected to a domain controller and have administrative users on the domain.

Now I am trying to add the machine Node-02 to the site that was created on the machine node-03, but I got the following error.

“Failed to register the server machine 'NODE-02.CLUSTER-MOLG.PS'. Server machine 'http://NODE-02.CLUSTER-MOLG.PS:6080/arcgis/admin' returned an error. 'Unable to access the config store on 'C:\arcgisserver\config-store'.'”
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I believe that there is something wrong with ArcGIS server 10.3, since I can navigate to the folder 'C:\arcgisserver\config-store which is located on the machine Node-03 form the machine node-02, and the whole arcgisserver folder is shared with everyone with read and write property, so its not a network error.
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What might be the issue here?

Best Answer

Information here on turning a single machine configuration into a cluster.

For this particular issue, the problem was the config store was referenced by the first GIS Server through a local path. When attempting to connect the 2nd GIS Server, it cannot access the local path on the first machine. The config store must be setup with the ArcGIS Server using a share (UNC path), so all GIS Servers can access the config store (and server directories) equally.