Re: Shortest offline window on database migration

> 2019年5月31日(金) 6:53 Haroldo Kerry <hkerry(at)callix(dot)com(dot)br>:
>>> On Thu, May 30, 2019 at 12:54 PM Steven Winfield <Steven(dot)Winfield(at)cantabcapital(dot)com> wrote:
>>
>> >Has anyone been through this type of problem?
>> >
>>
>> You could set up a new, empty db (with checksums enabled, etc.) on the new hardware and then use logical replication to sync across all the data from the existing cluster.
>> (This logical replica could be doing binary replication to hot standbys too, if you like).
>>
>> When the sync has finished you could perhaps gradually shift read-only load over to the new db, and finally switch write load too - your downtime would then be limited to how long this final cut-over takes.
>>
> Steve.
> Hello Steven,
> Unfortunately logical replication is a pg10+ feature. One more reason for upgrading from 9.6.10 :-)

Have you looked at the pglogical extension from 2ndQuadrant?

https://github.com/2ndQuadrant/pglogical/tree/REL2_x_STABLE

Regards

Ian Barwick

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Ian Barwick https://www.2ndQuadrant.com/
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