AMMRL: =)> Linux based VNMRJ & Maximum username length/ Active Directory Authentication

From: Harker,Robert A <rharker_at_chem.ufl.edu>
Date: Wed, 30 Oct 2013 19:39:37 +0000

Dear AMMRL;

We here at UF are being encouraged to authenticate our 150+ VNMRJ user database through our universities Microsoft Active Directory (UFAD). We are using Dell T3500's and VNMRJ 3.2.

One problem is that usernames on UFAD can be much longer than the VNMRJ mandated 8 characters which is UNIX legacy. Many UF usernames are similar to tester.user which is legal in both LINUX and the Active Directory but illegal in VNMRJ. LINUX defaults to a maximum of 32 characters and I found the lines of code in the makeuser script where it specifies the maximum length of the username to 8.

    if [ $namelen -gt 8 ]
    then
        echo "User name with $namelen letters exceeds UNIX limit of 8"
        return 1
    fi


I tried changing this to a number greater than 8 and tried using the VNMRJ Admin to create a user with a longer username and it fails with the above error regardless. Does anybody in the NMR community have a workaround or solution to this problem? Does VNMRJ Admin use another version of makeuser that is not in /vnmr/bin or does it now use another script? If we can create longer usernames then we can sync and authenticate with our UFAD and user administration would be much easier since these UFAD accounts are deactivated after the person leaves ... then we'd be able to purge accounts automatically.

Also we have been able to create 8 character or less LINUX users that authenticate on our UFAD but we cannot make the accounts into VNMRJ users. VNMRJ does not populate on the desktop.

Thanks in advance and I will collate and summarize the responses later.

Robert Harker

[Description: C:\Users\rharker\Pictures\R-Harker.jpg]<http://chem.ufl.edu/~nmr>


ROBERT A. HARKER
Engineer

University of Florida
Dept. Chemistry, 126 Sisler Hall
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Received on Wed Oct 30 2013 - 09:39:43 MST