Script. Not doing manual anything if it can at all be avoided, way to
error prone.
We have a cron job that does all of that. Checks if there are users or
groups in LDAP that aren't in SLURM yet, and adds them - that's adding
accounts, adding users, .... I think it also removed users/accounts if
necessary, and also handles user<->account associations, as those can
change (we allow users in multiple groups), and it makes a valient
attempt at changing default associations if they need changing, I believe.
I think it runs every 15 minutes.
The problem/pitfall that I can see is if a script is coded to,
basically, loop through all users running sacctmgr for each to check it
exists. We very definitely do not do that - the script gets all users,
accounts & associations from SLURM and the equivalent from LDAP and
then, basically, does a couple of list compares.
Tina
On 18/08/2020 16:36, Jason Simms wrote:
Hello everyone! We have a script that queries our LDAP server for any
users that have an entitlement to use the cluster, and if they don't
already have an account on the cluster, one is created for them. In
addition, they need to be added to the Slurm database (in order to
track usage, FairShare, etc.).
I've been doing this manually with a command like this:
sacctmgr add user <username> Account=root DefaultAccount=root
I would like to add that command to the user creation script, but I'm
warned off by the Slurm docs that say never to call sacctmgr in a
script/loop. I understand the reasons why doing so multiple times in
rapid succession can be a bad idea. In our case, however, it would be
rare to have more than one new user at a time (our script runs in
15-min. intervals). Is there really a concern in a case like ours?
How do you all handle adding users to Slurm's DB? Manually? Or, if not
by script or some automated means...??
Warmest regards,
Jason
--
*Jason L. Simms, Ph.D., M.P.H.*
Manager of Research and High-Performance Computing
XSEDE Campus Champion
Lafayette College
Information Technology Services
710 Sullivan Rd | Easton, PA 18042
Office: 112 Skillman Library
p: (610) 330-5632
