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Subject: Re: Upgrading 9.6.9 to 10.4
From: John Scalia <jayknowsunix@gmail.com>
In-Reply-To: <55998B04-BB01-45F9-B478-BCE1DA4E8E6E@eroad.com>
Date: Wed, 27 Jun 2018 15:53:20 -0400
Cc: "pgsql-admin@lists.postgresql.org" <pgsql-admin@lists.postgresql.org>
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Message-Id: <67BBE981-45B6-4CC8-BA3C-DF9210D46D8F@gmail.com>
References: <8D4726EE-74E8-494B-9ED1-817EF2BB5E4B@gmail.com>
 <55998B04-BB01-45F9-B478-BCE1DA4E8E6E@eroad.com>
To: David Morton <david.morton@eroad.com>
Precedence: bulk

Ok, I figured out why the Makefile is broken for pglogical for PostgreSQL V.=
10. The pg_config utility returned 10.4 for the line setting Makefile parame=
ter PGVER. Adding a simple =E2=80=9C| cut -c1-2 to that line allows the Make=
file to run for 9.6 and 10.4, probably other versions as well.

There are compile problems, however, in several source files. I don=E2=80=99=
t have the code in front of me, but one doing heap work calls replorigin_dro=
p with a single argument, but that changed in V10 to need 2 args. Fairly eas=
y to fix that one.

Another source calls ExecARUpdateTriggers, and its friends Insert and Delete=
, those signatures have changed as well, and I haven=E2=80=99t yet figured o=
ut how to alter pglogical for compiling these.

If anyone reading here is from 2nd Quadrant,I=E2=80=99m curious if this is a=
ctually being maintained. I did post these as an issue on github.
=E2=80=94
Jay

Sent from my iPad

> On Jun 26, 2018, at 6:47 PM, David Morton <david.morton@eroad.com> wrote:
>=20
> Take a look at pglogical ... we've used it for 9.4 -> 9.6 and the same the=
ories apply going to 10.x I imagine. People have used it in combination with=
 pgbouncer to achieve near outage-less upgrades. Some helpful links below:
> https://blog.2ndquadrant.com/pglogical-logical-replication-postgresql-10/
> https://blog.2ndquadrant.com/near-zero-downtime-automated-upgrades-postgre=
sql-clusters-cloud/
> https://blog.2ndquadrant.com/near-zero-downtime-automated-upgrades-postgre=
sql-clusters-cloud-part-ii/
>=20
>=20
> =EF=BB=BFOn 27/06/18, 10:38 AM, "John Scalia" <jayknowsunix@gmail.com> wro=
te:
>=20
>    Hi all,
>=20
>    My employer is in the process of upgrading PostgreSQL, and they would l=
ike me to make this happen without any real interruption of service. As I un=
derstand it, 9.6 does not support the publish/subscribe model like 10.4 does=
, but logical replication is the basis of that model. So, does anyone have a=
ny suggestions for how to implement the receiver side on a 10.4 server? Or c=
ould you at least point me to some sort of how-to page?
>=20
>    TIA,
>    Jay
>=20
>=20
>    Sent from my iPad
>=20
>=20