Yes open an SR.  The KB is correct that the location of the file is /etc/mcp/templates/webui_httpd.conf (for this particular file / situation) but the changes in that file do not get propagated (tested in my 8.0.0.4 and also in my 8.1.0.2 environment).  Most likely the KB requires an update with the procedure to manually propagate the changes across all nodes.
I followed [URL] to disable basic authentication by modifying webui_httpd.conf as directed and saw this information:  Any modifications to the template file will automatically be detected by the system and propagated to the rest of the cluster.  My question is when?  I made the change almost 24 hours ago on node #5.  So far, none of the other nodes have picked up the new template.  I only have a 5-node cluster, so I could just copy it manually but should I?  Why does the documentation expect it to be propagated automatically, perhaps in an older version of OneFS it did?  My version is v8.0.0.4.  Thanks.  Message was edited by: Ryan_CSULB (typo in spelling)
Template Changes and Propagation