It looks like I forgot to follow up with the resolution to this problem. 

The actual workaround was to add “< /dev/console” to the command line.

/usr/lpp/mmfs/bin/mmsdrrestore -p ut003 -R /usr/bin/scp < /dev/console 

The problem seems to be that under RHEL7, the postscripts do not have a 
/dev/tty and stdin is not a tty.
I did not check under CentOS 6, but presume it had worked (and still works) 
that way because
the scripts had always been run under a pseudoterminal.  If the cluster is set 
up with central mode
ssh authentication, the xcat code refuses to attempt an operation that might 
require typing a password
if there is no tty ….  

Hope this is useful.

 — ddj
Dave Johnson
Brown University

> On Feb 8, 2017, at 5:39 PM, Christopher Samuel <sam...@unimelb.edu.au> wrote:
> 
> On 07/02/17 22:35, David D Johnson wrote:
> 
>> Now the problem of the day is fixing the SSH credentials so that all
>> the diskless nodes booting off the new frontend can get root access
>> to all the nodes still booted off the old frontend.  Need this 
>> especially for GPFS.
> 
> For our diskless nodes we run them as statelite and have this in our
> litefile config:
> 
> "ALL","/var/adm/","persistent",,
> "ALL","/var/mmfs/","persistent",,
> 
> this means that once set up our diskless nodes need no manual
> intervention to bring GPFS up.
> 
> Hope this helps!
> Chris
> -- 
> Christopher Samuel        Senior Systems Administrator
> VLSCI - Victorian Life Sciences Computation Initiative
> Email: sam...@unimelb.edu.au Phone: +61 (0)3 903 55545
> http://www.vlsci.org.au/      http://twitter.com/vlsci
> 
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> xCAT-user mailing list
> xCAT-user@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/xcat-user


------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
xCAT-user mailing list
xCAT-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/xcat-user

Reply via email to