[slurm-users] Scontrol update: invalid user id

[Andy Riebs]

The "invalid user id" message suggests that you need to be running as 
root (or possibly as the slurm user?) to update the node state.

Run "slurmd -Dvv" as root on one of the compute nodes and it will show 
you what it thinks is the socket/core/thread configuration.

------------------------------------------------------------------------
*From:* Shihanjian Wang <swang52 at ucsc.edu>
*Sent:* Monday, April 15, 2019 5:30PM
*To:* Slurm-users <slurm-users at lists.schedmd.com>
*Cc:*
*Subject:* [slurm-users] Scontrol update: invalid user id
Hi,
We are doing a senior project involving the creation of a Pi Cluster.  
We are using 7 Raspberry Pi B+'s in this cluster.

When we use sinfo to look at the status of the nodes, they appear as 
drained.  We also encountered a problem while trying to update the state 
of the nodes.  When trying to use scontrol to update the nodes, the get 
an error message: scontrol update: invalid user id.  We think another 
reason that the nodes are drained is because of low "resources".  This 
has to do with the low socket*core*thread count, which is the number of 
CPUs.  We have tried changing this number in the configuration file but 
this reason still shows.

We are unsure what the problem is regarding this issue. The 
authentication method used is munge, and we think that slurm is indeed 
using munge as the authentication type.

If more information is needed, please let us know and we will provide 
the required information.

Thanks.

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