Thank you Greg and Brad,

That is a great tool (rolling restarts) and great news (working on 
inter-process communication) ! 

Pardon my ignorance, but the rolling restart command refers to a "manager", 
web, and handler.  What are "Manager" galaxy processes?

I've had issues where restarting all galaxy web/handler processes at the same 
time results in workflows being terminated where steps that are currently 
executing continue until completion but subsequent steps of the workflow 
receive an (!) icon and indicate that the "none" job status is unknown.   I 
configured Galaxy with the DRMAA runner to an SGE (OGS) cluster.  Does the 
rolling restart method "fix" this issue?

Regards,
Iyad Kandalaft

Bioinformatics Programmer
Microbial Biodiversity Bioinformatics | Science & Technology Branch 
Agriculture & Agri-Food Canada
iyad.kandal...@agr.gc.ca | (613)  759-1228

-----Original Message-----
From: Greg Von Kuster [mailto:g...@bx.psu.edu] 
Sent: Friday, May 23, 2014 9:08 AM
To: Langhorst, Brad
Cc: Kandalaft, Iyad; galaxy-...@bx.psu.edu
Subject: Re: [galaxy-dev] Repository installation on multiple servers

Hello Iyad and Brad,

Hello Iyad,

Yes, this is the current expected behavior.  

There is a Trllo card here that tracks progress on this issue.

http://trello.com/c/B0pV80d0/1281-messaging-and-task-queue

This work is currently in progress with a baseline implementation available in 
the upcoming Galaxy release (currently scheduled for June 2).  I'm not involved 
in this work, so I'm not quite sure whether this baseline implementation will 
handle comunication between Galaxy web front-ends like you have (and like we 
have for our public Galaxy instances), but this information should be clarified 
with the upcoming release notes.

Greg Von Kuster


On May 23, 2014, at 8:56 AM, "Langhorst, Brad" <langho...@neb.com> wrote:

> I had the same concern, and heard that this is being worked on.
> 
> Meanwhile I'm using a rolling restart method from pjbriggs
> 
> https://github.com/pjbriggs/galaxy-admin-utils/
> 
> I'm pretty happy with this (desipite the 2 minute restart per worker) because 
> users do not see any interruption during restarts as they did before.
> 
> 
> Brad
> --
> Brad Langhorst, Ph.D.
> Applications and Product Development Scientist
> 
> On May 23, 2014, at 8:46 AM, Kandalaft, Iyad <iyad.kandal...@agr.gc.ca> wrote:
> 
>> Hi Everyone
>> 
>> This is my first time on the mailing list.  I am the administrator for a 
>> production installation of Galaxy at Agriculture and Agri-Food Canada in 
>> Ottawa, Canada.
>> Currently, I have a galaxy configured to start 3 web servers and 3 handlers. 
>>  When installing a tool from a toolshed, only one of the three servers sees 
>> the installation (the one that processed the installation request).  To 
>> resolve the issue, galaxy needs to be restarted, which reloads all the tools.
>> Is this the expected behaviour when a proxy server (apache) load balances 3 
>> galaxy web servers?  If not, where can I start diagnosing the problem?
>> 
>> Your assistance is much appreciated.  Thank you.
>> 
>> Regards,
>> 
>> Iyad Kandalaft
>> Bioinformatics Programmer
>> Microbial Biodiversity Bioinformatics Science & Technology Branch 
>> Agriculture & Agri-Food Canada iyad.kandal...@agr.gc.ca | (613) 
>> 759-1228
>> 
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> 
> 
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