If needed, an interactive shell can be run on a cluster node using the following SURM command (omitting the nodelist argument will let SLURM choose one random free node):
srun -u --partition=interactive --nodelist=node02 --pty bash
You can also require one or more GPUs:
srun -u --partition=interactive --gres=gpu:1 --pty bash
Login to the nodes via ssh is disabled.