Re: [ClusterLabs] Antw: DLM, cLVM, GFS2 and OCFS2 managed by systemd instead of crm ?

[Lentes, Bernd]

- On Oct 16, 2019, at 8:27 AM, Digimer li...@alteeve.ca wrote:

> On 2019-10-16 2:16 a.m., Ulrich Windl wrote:
> "Lentes, Bernd"  schrieb am 15.10.2019
>> um
>> 21:35 in Nachricht
>> <1922568650.3402980.1571168140600.javamail.zim...@helmholtz-muenchen.de>:
>>> Hi,
>>>
>>> i'm a big fan of simple solutions (KISS).
>>> Currently i have DLM, cLVM, GFS2 and OCFS2 managed by pacemaker.
>>> They all are fundamental prerequisites for my resources (Virtual Domains).
>>> To configure them i used clones and groups.
>>> Why not having them managed by systemd to make the cluster setup more
>>> overseeable ?
>>>
>>> Is there a strong reason that pacemaker cares about them ?
>> 
>> AFAIK, DLM (others maybe too) need the cluster infrastructure (comminication
>> layer) to be operable.
>> Also I consider systemd handling resources being worse than pacemaker.
>> What is your specific problem? Keeping the cluster configuration simple while
>> moving complexity to systemd?
>> 
>> Do you know one command to describe your systemd configuration as short as 
>> the
>> cluster configuration (like crm configuration show)?
>> 
>> Regards,
>> Ulrich
> 
> This is correct. DLM uses corosync.

OK. I understand. I will stay with pacemaker.
Thanks for all answers.


Bernd
 

Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
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Re: [ClusterLabs] Antw: DLM, cLVM, GFS2 and OCFS2 managed by systemd instead of crm ?

[Digimer]

On 2019-10-16 2:16 a.m., Ulrich Windl wrote:
 "Lentes, Bernd"  schrieb am 15.10.2019
> um
> 21:35 in Nachricht
> <1922568650.3402980.1571168140600.javamail.zim...@helmholtz-muenchen.de>:
>> Hi,
>>
>> i'm a big fan of simple solutions (KISS).
>> Currently i have DLM, cLVM, GFS2 and OCFS2 managed by pacemaker.
>> They all are fundamental prerequisites for my resources (Virtual Domains).
>> To configure them i used clones and groups.
>> Why not having them managed by systemd to make the cluster setup more 
>> overseeable ?
>>
>> Is there a strong reason that pacemaker cares about them ?
> 
> AFAIK, DLM (others maybe too) need the cluster infrastructure (comminication
> layer) to be operable.
> Also I consider systemd handling resources being worse than pacemaker.
> What is your specific problem? Keeping the cluster configuration simple while
> moving complexity to systemd?
> 
> Do you know one command to describe your systemd configuration as short as the
> cluster configuration (like crm configuration show)?
> 
> Regards,
> Ulrich

This is correct. DLM uses corosync.

-- 
Digimer
Papers and Projects: https://alteeve.com/w/
"I am, somehow, less interested in the weight and convolutions of
Einstein’s brain than in the near certainty that people of equal talent
have lived and died in cotton fields and sweatshops." - Stephen Jay Gould
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