[OOD-users] Jupyter App -- satisfy password request && database connection error

Tue Oct 2 12:47:25 EDT 2018

Em,

What version of Jupyter are you using for this? Are you following off of a fork of https://github.com/OSC/bc_example_jupyter?  If you would let me peek at your iHPC app I might be able to help you debug it. Feel free to email me directly.

Thanks,
Eric

---
Eric Franz, Senior Web & Interface App Engineer
Ohio Supercomputer Center
An Ohio Technology Consortium (OH-TECH) Member
1224 Kinnear Road
Columbus, OH 43212
email: efranz at osc.edu

From: OOD-users <ood-users-bounces+efranz=osc.edu at lists.osc.edu> on behalf of "E.M. Dragowsky" <dragowsky at case.edu>
Reply-To: User support mailing list for Open OnDemand <ood-users at lists.osc.edu>
Date: Friday, September 28, 2018 at 5:55 PM
To: User support mailing list for Open OnDemand <ood-users at lists.osc.edu>
Subject: Re: [OOD-users] Jupyter App -- satisfy password request && database connection error

OK -- part 2 of my message is attributed to the slurmdbd service stopping.
Our slurm began experiencing an event reported earlier in this note:
https://bugs.schedmd.com/show_bug.cgi?id=2066<https://www.google.com/url?q=https://bugs.schedmd.com/show_bug.cgi?id%3D2066&sa=D&source=hangouts&ust=1538257248232000&usg=AFQjCNHPfW7HzDgAxRwb-RwYobMxX7qeGg>
Effectively, 37GB of "packmem" "pack32" "pack16" errors written starting at 14:51pm today were generated and brought down the service by 15:30.
Monday I'll resume with understanding how to manage the password for the Jupyter app -- and keep a careful eye on the interaction with slurmdbd....

On Fri, Sep 28, 2018 at 4:49 PM, Shawn Doughty <shawn.doughty at tufts.edu<mailto:shawn.doughty at tufts.edu>> wrote:
Hi,

You mean jupyter notebook? I used the regular batchconnect version from OOD git and then just tweaked a couple of settings using native slurm connection. This shouldn't have to go over TurboVNC?   Happy to send you a copy of our setup here.  Users are really liking jupyter, the only thing I noticed is it has a tendency to barf when running out of memory which is why we give users the choice to pick cores and memory.

On Fri, Sep 28, 2018 at 4:49 PM Shawn Doughty <capsaicin420 at gmail.com<mailto:capsaicin420 at gmail.com>> wrote:
Hi,

You mean jupyter notebook? I used the regular batchconnect version from OOD git and then just tweaked a couple of settings using native slurm connection. This shouldn't have to go over TurboVNC?   Happy to send you a copy of our setup here.  Users are really liking jupyter, the only thing I noticed is it has a tendency to barf when running out of memory which is why we give users the choice to pick cores and memory.

On Fri, Sep 28, 2018 at 4:25 PM E.M. Dragowsky <dragowsky at case.edu<mailto:dragowsky at case.edu>> wrote:
Hi, everyone --
My Jupyter development app is now configured and functional, such that the app launches and connects to the compute node I have provisioned with TurboVNC and websockify (still testing).
Being after 4pm local time, I have two problems that are preventing the actual connection.
--  After launching a session, a "Connect to Jupyter" button is presented.  After clicking through, I don't know how to satisfy the password request in the browser window. Post connection documentation doesn't make enough sense to me.
--  Perhaps related to my failed password attempts, I'm now also experiencing a database connection error preventing any further evaluation:

sbatch: error: slurm_persist_conn_open_without_init: failed to open persistant connection to smaster:6819: Connection refused

sbatch: error: slurmdbd: Sending PersistInit msg: Connection refused

sbatch: error: slurm_persist_conn_open_without_init: failed to open persistant connection to smaster:6819: Connection refused

sbatch: error: slurmdbd: Sending PersistInit msg: Connection refused

sbatch: error: slurmdbd: DBD_GET_CLUSTERS failure: Connection refused

sbatch: error: Problem talking to database

sbatch: error: There is a problem talking to the database: Connection refused.  Only local cluster communication is available, remove --cluster from your command line or contact your admin to resolve the problem.

smaster is the name of my cluster, and we're using slurm.

Thanks in advance
~ Emily

--
E.M. Dragowsky, Ph.D.
Research Computing -- UTech
Case Western Reserve University
(216) 368-0082

--
Shawn G. Doughty
Manager - Research Computing
Tufts Technology Services (TTS)
Research Technology (RT)
16 Dearborn Road
Somerville, MA 02144
617-627-5462
http://it.tufts.edu/<https://exchange.tufts.edu/owa/redir.aspx?C=I4ijzFrF9U-qoUscfQAAw3PH17xA188ItQ-l2VPx05symHhOFT2FNSr8FiNXjMnyEtzrTlLLj-Q.&URL=http%3a%2f%2fit.tufts.edu%2f>

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--
E.M. Dragowsky, Ph.D.
Research Computing -- UTech
Case Western Reserve University
(216) 368-0082
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