[slurm-users] Re: Randomly draining nodes

Your slurm.conf should be the same on all machines (is it? you don't have Prolog configured on some but not others?), but no, it is not mandatory to use a prolog. I am simply surprised that you could get a "Prolog error" without having a prolog configured, since an error in the prolog program itself is how I always get that error. Yours must be some kind of communication problem, or a difference in expectation between daemons about what requests ought be exchanged.