Обсуждение: Upgrading from Postgresql 9.1 to 10
Hi all, Is it possible to upgrade an existing postgresql 9.1 production system to latest Postgres 10.0 version? The main requirement is to get rid of downtime. Please help me out! Thanks in Advance. Regards, Pavan -- Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f1843780.html
On Wed, Feb 14, 2018 at 9:42 AM, pavan95 <pavan.postgresdba@gmail.com> wrote:
> Is it possible to upgrade an existing postgresql 9.1 production system to latest Postgres 10.0 version? Hi all,
Is it possible to upgrade an existing postgresql 9.1 production system to
latest Postgres 10.0 version?
The main requirement is to get rid of downtime. Please help me out!
Thanks in Advance.
Regards,
Pavan
--
Sent from: http://www.postgresql-archive.org/PostgreSQL-general- f1843780.html
This is specifically covered in the documention
8.6. Upgrading a PostgreSQL Cluster
https://www.postgresql.org/docs/current/static/upgrading.html--
Melvin Davidson
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
On Wednesday, February 14, 2018, pavan95 <pavan.postgresdba@gmail.com> wrote:
Hi all,
Is it possible to upgrade an existing postgresql 9.1 production system to
latest Postgres 10.0 version?
The main requirement is to get rid of downtime. Please help me out!
Zero downtime is only possible by standing up a hot-standby then failing over to it. Same-server upgrade you can do via pg_upgrade but it does involve downtime. There are lots of material and options online, including the docs, for setting up hot-standby replication.
David. J.
Thank you for your timely response 😊
On Feb 14, 2018 8:18 PM, "Melvin Davidson" <melvin6925@gmail.com> wrote:
On Wed, Feb 14, 2018 at 9:42 AM, pavan95 <pavan.postgresdba@gmail.com> wrote:> Is it possible to upgrade an existing postgresql 9.1 production system to latest Postgres 10.0 version?Hi all,
Is it possible to upgrade an existing postgresql 9.1 production system to
latest Postgres 10.0 version?
The main requirement is to get rid of downtime. Please help me out!
Thanks in Advance.
Regards,
Pavan
--
Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f184378 0.html This is specifically covered in the documention8.6. Upgrading a PostgreSQL Cluster
https://www.postgresql.org/docs/current/static/upgrading. html
--Melvin Davidson
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
On Wednesday, February 14, 2018, David G. Johnston <david.g.johnston@gmail.com> wrote:
On Wednesday, February 14, 2018, pavan95 <pavan.postgresdba@gmail.com> wrote:Hi all,
Is it possible to upgrade an existing postgresql 9.1 production system to
latest Postgres 10.0 version?
The main requirement is to get rid of downtime. Please help me out!Zero downtime is only possible by standing up a hot-standby then failing over to it. Same-server upgrade you can do via pg_upgrade but it does involve downtime. There are lots of material and options online, including the docs, for setting up hot-standby replication.
To clarify, you need to use logical replication here since the WAL format is not usable across versions.
pg_upgrade is your simplest option if you can handle its downtime.
David J.
Yeah David,
Even I'm thinking the same
Regards,
Pavan
On Feb 14, 2018 8:34 PM, "David G. Johnston" <david.g.johnston@gmail.com> wrote:
On Wednesday, February 14, 2018, David G. Johnston <david.g.johnston@gmail.com> wrote:On Wednesday, February 14, 2018, pavan95 <pavan.postgresdba@gmail.com> wrote:Hi all,
Is it possible to upgrade an existing postgresql 9.1 production system to
latest Postgres 10.0 version?
The main requirement is to get rid of downtime. Please help me out!Zero downtime is only possible by standing up a hot-standby then failing over to it. Same-server upgrade you can do via pg_upgrade but it does involve downtime. There are lots of material and options online, including the docs, for setting up hot-standby replication.To clarify, you need to use logical replication here since the WAL format is not usable across versions.pg_upgrade is your simplest option if you can handle its downtime.David J.
On Wed, Feb 14, 2018 at 10:04 AM, David G. Johnston <david.g.johnston@gmail.com> wrote:
On Wednesday, February 14, 2018, David G. Johnston <david.g.johnston@gmail.com> wrote:On Wednesday, February 14, 2018, pavan95 <pavan.postgresdba@gmail.com> wrote:Hi all,
Is it possible to upgrade an existing postgresql 9.1 production system to
latest Postgres 10.0 version?
The main requirement is to get rid of downtime. Please help me out!Zero downtime is only possible by standing up a hot-standby then failing over to it. Same-server upgrade you can do via pg_upgrade but it does involve downtime. There are lots of material and options online, including the docs, for setting up hot-standby replication.To clarify, you need to use logical replication here since the WAL format is not usable across versions.pg_upgrade is your simplest option if you can handle its downtime.David J.
> To clarify, you need to use logical replication here since the WAL format is not usable across versions.
Slony replication also allows upgrading between versions without downtime.
http://www.slony.info/
--
--
Melvin Davidson
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
On Wed, Feb 14, 2018 at 07:47:55AM -0700, David G. Johnston wrote: > Zero downtime is only possible by standing up a hot-standby then failing > over to it. Same-server upgrade you can do via pg_upgrade but it does > involve downtime. There are lots of material and options online, including > the docs, for setting up hot-standby replication. PostgreSQL 10 adds logical replication which is able to handle this scenario with close to zero downtime if you use it with synchronous replication. So with 9.1 as origin server you cannot use that. Logical decoding facilities being added in 9.4, it could be possible to upgrade at least from this version using 2nd Quadrant's pglogical (correct me others here if I am incorrect!). Now, for older versions, the usual way to do things is by using Slony which does trigger-based replication. This can help you reach close to no downtime, way lower than pg_upgrade for example even if you use its --link mode. pg_upgrade --link can work very quickly as well, so if you care about being close to zero you may want to consider it. -- Michael
Вложения
Thankyou Michael -- Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f1843780.html