[Info-vax] SYSMAN design question

George Cornelius cornelius at eisner.decus.org
Mon Aug 31 18:55:30 EDT 2009


In article <O8JA$G3Ic5it at eisner.encompasserve.org>, koehler at eisner.nospam.encompasserve.org (Bob Koehler) writes:
> In article <00496b63$0$22465$c3e8da3 at news.astraweb.com>, JF Mezei <jfmezei.spamnot at vaxination.ca> writes:
>> 
>> Is there a reason why they designed SYSMAN to not use the specified
>> username when executing on the local node ?
> 
>    What makes you think it's not?  Using that username is not the same
>    as using that username's privileges.  IIRC SYSMAN will start on the
>    remote nodes using the same privileges as the process that's running 
>    it locally, and if you can have more and need to have more, you have 
>    to turn them on.

It has just historically worked that way.  On local node it is a
subprocess of the current process and has the same username.

George Cornelius

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$ MCR SYSMAN
SYSMAN> ^T
ALPHAE::T419:CORNELIUS 17:40:55 SYSMAN    CPU=00:00:04.43 PF=9365 [...]
SYSMAN> set env/clus/user=system
Remote Password: 
%SYSMAN-I-ENV, current command environment:
        Clusterwide on local cluster
        Username SYSTEM will be used on nonlocal nodes
 
SYSMAN> do write sys$output f$len(f$getj(0,"CURPRIV"))
%SYSMAN-I-OUTPUT, command execution on node ALPHAO
274
%SYSMAN-I-OUTPUT, command execution on node ALPHAV
274
%SYSMAN-I-OUTPUT, command execution on node ALPHAE
46
SYSMAN> do sho proc
%SYSMAN-I-OUTPUT, command execution on node ALPHAO
31-AUG-2009 17:42:54.54   User: SYSTEM           Process ID:   3A3C3A9C
                          Node: ALPHAO           Process name: "SMI$SYSTEM_99"
Terminal:           MBA9429:
User Identifier:    [SYSTEM]
Base priority:      7
Default file spec:  SYS$SYSROOT:[SYSMGR]
Number of Kthreads: 1
 
Soft CPU Affinity: off
%SYSMAN-I-OUTPUT, command execution on node ALPHAV
31-AUG-2009 17:42:54.68   User: SYSTEM           Process ID:   3A41D5A0
                          Node: ALPHAV           Process name: "SMI$SYSTEM_22"
Terminal:           MBA1343:
User Identifier:    [SYSTEM]
Base priority:      7
Default file spec:  SYS$SYSROOT:[SYSMGR]
Number of Kthreads: 1
 
Soft CPU Affinity: off
%SYSMAN-I-OUTPUT, command execution on node ALPHAE
31-AUG-2009 17:42:54.84   User: CORNELIUS        Process ID:   3A680E49
                          Node: ALPHAE           Process name: "SMI$CORNELIUS_7"
Terminal:           MBA6597:
User Identifier:    [CORNELIUS]
Base priority:      4
Default file spec:  UDISK:[PROGRAMMERS.CORNELIUS]
Number of Kthreads: 1
 
Soft CPU Affinity: off

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