[slurm-users] update or fresh install slurm 20.x

[Ole Holm Nielsen]

On 01-05-2020 10:00, Felix Farcas wrote:
> I am upgrading slrum just on a worker node.
> 
> I drained all the jobs on the old slurm.
> 
> The only active service on my worker node is slurmd.service

Please read carefully the Slurm documentation:

The recommended upgrade order is that versions may be mixed as follows:

slurmdbd >= slurmctld >= slurmd >= commands

You cannot mix 20.02 with an old 17.02 or 17.11 Slurm!

/Ole

> On 5/1/2020 10:45 AM, Ole Holm Nielsen wrote:
>> On 01-05-2020 09:21, Felix Farcas wrote:
>>> I did install a new server ARC-CE with slurm-20.x
>>>
>>> I installed only one node for testing.
>>>
>>> On my old nodes I do have slurm-17.x
>>>
>>> Now I am asking, if I am going to move my old nodes to the new sever 
>>> with slurm.20.x do i have to remove old slurm and install the new 
>>> one, or the two version can function together?
>>
>> You may upgrade at most by 2 major versions of Slurm.  For example, 
>> 17.02 to 18.08, then 18.08 to 20.02.  I have collected information 
>> about this in my Wiki page:
>> https://wiki.fysik.dtu.dk/niflheim/Slurm_installation#upgrading-slurm
>>
>> Upgrading of the Slurm database must be done really carefully as 
>> described in this page.