Thanks Andreas,
pglogical seems really great.
My knowledge of replication was frozen at the time of Slony II and PG 8.4, I didn't have the chance to use replication since that time.
I'll give a look at pglogical !
Best regards
Lionel
2018-06-06 8:40 GMT+02:00 Andreas Kretschmer <andreas@xxxxxxxxxxxxxxx>:
Am 06.06.2018 um 08:16 schrieb Lionel Tressens:
Hello,
We are running a single PG 9.4 database node we are switching to PG 10.4 (which will run as master + setup of a slave)
To minimize downtime when switching from the 9.4 server to the 10.4 one, I would like to setup a replication stream instead of stopping the production, dumping 9.4 and restoring in 10.4 which my take a lot of time.
The next steps would be to reinstall the 9.4 server from scratch with 10.4 and setup this host as a slave, ready to take the master role if needed (hot standby).
Can such a replication be established between 9.4 and 10.4 and what replication tool/schema to use ? I have been through the documentation on replication in 9.4 and 10.4 but things are very confusing to me about this point.
you can't use the in-build streaming replication between different major versions, but you can use trigger-based replications, for instance londiste or slony.
You can also use use our extension pglogical, see https://www.2ndquadrant.com/en/resources/pglogical/ . If i were you i would use the latter ;-)
Regards, Andreas
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