PowerScale: How to SSH With Duplicate Usernames

#ssh <user>@<domain>@<ip>

i.e. - #ssh root@UNIX_USERS@<ip>

A duplicate root user appears in the output of isi auth users list:

# isi auth users list

Name        
-------------
Guest       
root        
root        
admin       
compadmin   
remotesupport
ftp         
insightiq   
www         
_lldpd      
nobody      
git_daemon  
-------------
Total: 12

These are different users sharing the same name that exists on different domains.

Issue the following command string to see that these are different users:

# for i in $(isi auth status | grep active | awk '{print $1}'); do echo $i; isi auth users view root --provider=$i | egrep "Name|Domain|UID|UPN";echo ; done

lsa-local-provider:System

                    Name: root
              DNS Domain: -
                  Domain: CLUSTER2
        Sam Account Name: root
                     UID: 2000
           Generated UID: No
           Generated UPN: Yes
                        Name: Isilon Users
                     UPN: root@CLUSTER2


lsa-file-provider:System

                    Name: root
              DNS Domain: -
                  Domain: UNIX_USERS
        Sam Account Name: root
                     UID: 0
           Generated UID: No
           Generated UPN: Yes
                        Name: wheel
                     UPN: root@UNIX_USERS

The valid User Principal Name (UPN) used for access is shown above.

Do not use a username that matches one in the lsa-file-provider:System provider. Removing these helps prevent potential issues with access or services.

Workaround for access:

1. Use the UPN during SSH:

#ssh <user>@<domain>@<ip>

i.e. - #ssh root@UNIX_USERS@<ip>

2. Change the provider order in the zone so that the preferred user's provider appears first. This is, by default, set to lsa-file-provider:System first, where the true root lives in lsa-file-provider:System. By putting the file-provider first, it looks at the true root for login details.    

# isi zone zones view System

                       Name: System
                       Path: /ifs
                   Groupnet: groupnet0
              Map Untrusted: -
             Auth Providers: lsa-local-provider:System, lsa-file-provider:System
               NetBIOS Name: -
         User Mapping Rules: -
       Home Directory Umask: 0077
         Skeleton Directory: /usr/share/skel
         Cache Entry Expiry: 4H
Negative Cache Entry Expiry: 1m
                    Zone ID: 1

powerscale1-1# isi zone zones modify System --auth-providers=lsa-file-provider:System,lsa-local-provider:System