Hi Dean,
Blocking ports with the Linux firewall and/or your network firewall
(wired/Wi-Fi) would have the same effect: Slurm won't work unless you
open ports as specified in
https://wiki.fysik.dtu.dk/niflheim/Slurm_configuration#configure-firewall-for-slurm-daemons
/Ole
On 2/8/20 1:26 AM, dean.w.schu...@gmail.com wrote:
The firewalls are disabled on all nodes on my cluster so I don't think it is a
firewall issue. It's probably our network security between the wired part of
our network and the wireless side. When I put the nodes back on a wired
controller they work again.
-----Original Message-----
From: slurm-users <slurm-users-boun...@lists.schedmd.com> On Behalf Of Ole Holm
Nielsen
Sent: Friday, February 7, 2020 2:34 PM
To: slurm-users@lists.schedmd.com
Subject: Re: [slurm-users] Which ports does slurm use?
On 06-02-2020 22:40, Dean Schulze wrote:
I've moved two nodes to a different controller. The nodes are wired
and the controller is networked via wifi. I had to open up ports 6817
and
6818 between the wired and wireless sides of our network to get any
connectivity.
Now when I do
srun -N2 hostname
the jobs show connection timeouts on the nodes:
[2020-02-06T14:24:37.183] launch task 60.0 request from UID:1000
GID:1000 HOST:10.204.18.232 PORT:19602 [2020-02-06T14:24:37.183]
lllp_distribution jobid [60] implicit auto
binding: cores, dist 8192
[2020-02-06T14:24:37.183] _task_layout_lllp_cyclic
[2020-02-06T14:24:37.183] _lllp_generate_cpu_bind jobid [60]:
mask_cpu,
0x0101
[2020-02-06T14:24:37.184] _run_prolog: run job script took usec=6
[2020-02-06T14:24:37.184] _run_prolog: prolog with lock for job 60 ran
for 0 seconds [2020-02-06T14:24:45.224] [60.0] error: connect io:
Connection timed out [2020-02-06T14:24:45.224] [60.0] error: IO setup
failed: Connection timed out [2020-02-06T14:24:45.225] [60.0] error:
job_manager exiting abnormally, rc = 4021 [2020-02-06T14:24:59.538]
[60.0] error: _send_launch_resp: Failed to send RESPONSE_LAUNCH_TASKS:
Connection timed out [2020-02-06T14:24:59.551] [60.0] done with job
That node used port 19602 and the other node was using port 12496.
When I did the srun again the jobs showed two different ports on the
nodes
(58040 and 32392).
How can I configure a network if srun is going to grab different ports
each time?
Perhaps the information about firewall setup in my Wiki page can be of use:
https://wiki.fysik.dtu.dk/niflheim/Slurm_configuration#configure-firewall-for-slurm-daemons
/Ole
