[slurm-users] upgrading slurm to 20.11

[Brian Andrus]

So the need to go step-by-step is due to changes in the database schema. 
The upgrade process is not able to upgrade if there is too big of a 
difference.

That is a little gotcha: so when upgrading, you need to start slurmdbd 
and let it run for a bit as it does the database update (you can watch 
the logs to see when it is happy). Don't start slurmctld until that is 
done. Waiting makes things easier.

Brian Andrus

On 5/17/2022 9:29 AM, Paul Edmon wrote:
>
> I think it should be, but you should be able to run a test and find out.
>
> -Paul Edmon-
>
> On 5/17/22 12:13 PM, byron wrote:
>> Sorry, I should have been clearer.   I understand that with regards 
>> to slurmd / slurmctld you can skip a major release without impacting 
>> running jobs etc.  My questions was about upgrading slurmdbd and 
>> whether it was necessary to upgrade through the intermediate major 
>> releases (which I know understand is necessary).
>>
>> Thanks
>>
>>
>> On Tue, May 17, 2022 at 4:49 PM Paul Edmon <pedmon at cfa.harvard.edu> 
>> wrote:
>>
>>     The slurm docs say you can do two major releases at a time
>>     (https://slurm.schedmd.com/quickstart_admin.html):
>>
>>     "Almost every new major release of Slurm (e.g. 20.02.x to
>>     20.11.x) involves changes to the state files with new data
>>     structures, new options, etc. Slurm permits upgrades to a new
>>     major release from the past two major releases, which happen
>>     every nine months (e.g. 20.02.x or 20.11.x to 21.08.x) without
>>     loss of jobs or other state information."
>>
>>     As for old versions of slurm I think at this point you would need
>>     to contact SchedMD.  I'm sure they have past releases they can
>>     hand out if you are bootstrapping to a newer release.
>>
>>     -Paul Edmon-
>>
>>     On 5/17/22 11:42 AM, byron wrote:
>>>     Thanks Brian for the speedy responce.
>>>
>>>     Am I not correct in thinking that if I just go from 19.05 to
>>>     20.11 then there is the advantage that I can upgrade slurmd and
>>>     slurmctld in one go and it won't affect the running jobs since
>>>     upgrading to a new major release from the past two major
>>>     releases doesn't affect the state information.  Or are you
>>>     saying that  in this case (19.05  direct to 21.08) there isn't
>>>     any impact to running jobs either.  Or did you step through all
>>>     the versions when upgrading slurmd and slurmctld also?
>>>
>>>     Also where do I get a copy of 20.2 from if schedMD aren't
>>>     providing it as a download.
>>>
>>>     Thanks
>>>
>>>
>>>
>>>
>>>     On Tue, May 17, 2022 at 4:05 PM Brian Andrus
>>>     <toomuchit at gmail.com> wrote:
>>>
>>>         You need to step upgrade through major versions (not minor).
>>>
>>>         So 19.05=>20.x
>>>
>>>         I would highly recommend going to 21.08 while you are at it.
>>>         I just did the same migration (although they started at
>>>         18.x) with no
>>>         issues. Running jobs were not impacted and users didn't even
>>>         notice.
>>>
>>>         Brian Andrus
>>>
>>>
>>>         On 5/17/2022 7:35 AM, byron wrote:
>>>         > Hi
>>>         >
>>>         > I'm looking at upgrading our install of slurm from 19.05
>>>         to 20.11 in
>>>         > responce to the recenty announced security vulnerabilities.
>>>         >
>>>         > I've been through the documentation / forums and have
>>>         managed to find
>>>         > the answers to most of my questions but am still unclear
>>>         about the
>>>         > following
>>>         >
>>>         >  - In upgrading the slurmdbd from 19.05 to 20.11 do I need
>>>         to go
>>>         > through all the versions (19.05 => 20.2 => 20.11)?  From
>>>         reading the
>>>         > forums it look as though it is necesary
>>>         >
>>>         https://groups.google.com/g/slurm-users/c/fftVPaHvTzQ/m/YTWo1mRjAwAJ
>>>         >
>>>         https://groups.google.com/g/slurm-users/c/kXtepX8-L7I/m/udwySA3bBQAJ
>>>         >    However if that is the case it would seem strange that
>>>         SchedMD have
>>>         > removed 20.2 from the downloads page (I understand the
>>>         reason is that
>>>         > it contains the exploit) if it is still required for the
>>>         upgrade.
>>>         >
>>>         > - We are running version 5.5.68 of the MariaDB, the
>>>         version that comes
>>>         > with centos7.9.   I've seen a few references to upgrading
>>>         v5.5 but
>>>         > they were in the context of upgrading from slurm 17 to
>>>         18.  I'm
>>>         > wondering if its ok to stick with this version since we're
>>>         already on
>>>         > slurm 19.05.
>>>         >
>>>         > Any help much appreciated.
>>>         >
>>>         >
>>>         >
>>>         >
>>>
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