I had the same problem today. It was timing for me and then I remade the munge key and made sure the permissions for the directory and file was correct and also put it on the nodes.
It took a while and various changes before it started working. Thanks Jackie Scoggins On Oct 13, 2014, at 4:50 PM, John Lockman <[email protected]> wrote: Slurmctld munge Invalid Credential Howdy slurm folks, I'm trying to bring up slurm on CentOS7 but seem to be hitting an issue with munge authentication. I can verify munge is working via: "munge -n | ssh someotherhost unmunge" however when I startup slurmctld on my head node I receive the errors "slurmctld: error: Munge decode failed: Invalid credential slurmctld: error: authentication: Invalid credential slurmctld: error: slurm_receive_msg: Protocol authentication error slurmctld: error: slurm_receive_msg: Protocol authentication error" Using the latest build of slurm: slurm-14.03.8 $ rpm -qa | grep munge munge-devel-0.5.11-1.el7.x86_64 slurm-munge-2.6.9-1.el7.centos.x86_64 munge-0.5.11-1.el7.x86_64 munge-libs-0.5.11-1.el7.x86_64 All clocks are in sync, all UIDs are in sync Any help is appreciated. Thanks! /john
