[Pacemaker] Two resource nodes + one quorum node

[Andrew Beekhof]

On 13/06/2013, at 9:55 PM, Andrey Groshev <greenx at yandex.ru> wrote:

> 
> 
> 12.06.2013, 03:45, "Andrew Beekhof" <andrew at beekhof.net>:
>> On 12/06/2013, at 4:48 AM, Michael Schwartzkopff <misch at clusterbau.com> wrote:
>> 
>>>  Am Dienstag, 11. Juni 2013, 22:33:32 schrieb Andrey Groshev:
>>>>  Hi,
>>>>  I want to make Postgres cluster.
>>>>  As far as I understand, for the proper functioning of the cluster must use a
>>>>  quorum (ie, at least three nodes).
>>>  No. Two nodes are enough. See: no-quorum-policy="ignore".
>>>>  But if the databases are large - it is
>>>>  too expensive.
>>>>  One master, two slave, and in addition backup.
>>>>  So I'm trying to make the schema with one master, one slave, and one node
>>>>  only for a quorum.
>>>  One master and one slave should be enough.
>> 
>> But three nodes is better.
> 
> Yes, that's better. But in a good data storage - 20 TB will not be superfluous.

It doesn't have to be able to run services, it only needs to contribute to quorum.

> 
>> 
>>>  Be sure to have fencing configured.
>>> 
>>>  --
>>>  Dr. Michael Schwartzkopff
>>>  Guardinistr. 63
>>>  81375 München
>>> 
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>> 
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> 
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