All, Maybe someone has seen this. I have slurmrestd running listening on port 8081 as well as a unix socket at /run/slurmrestd/slurmrestd.sock I am able to query the port with curl and do a ping. Everything seems fine. Other commands work as well.   "pings": [     {       "hostname": "head01",       "pinged": "UP",       "responding": true,       "latency": 1605,       "mode": "primary",       "primary": true     },     {       "hostname": "head02",       "pinged": "UP",       "responding": true,       "latency": 2353,       "mode": "backup",       "primary": false     } When I try doing so via socket, however, my two head nodes show 'DOWN' :   "pings": [     {       "hostname": "head01",       "pinged": "DOWN",       "latency": 11784,       "mode": "primary"     },     {       "hostname": "head02",       "pinged": "DOWN",       "latency": 12668,       "mode": "backup"     } Other commands fail with:       "error_number": 1007,       "error": "Protocol authentication error", I'll admit, I don't usually use sockets, so I could easily be overlooking something there. Permissions on the socket look right. I am getting json back, so it is connecting. Note: slurmrestd is running under it's own user (not root and not slurmuser). Any ideas? Thanks in advance, Brian Andrus