Обсуждение: Postgresql active-active nodes in cluster
Hi,
I'm using Postgresql 15.4 version on RISCV architecture
I'm trying to implement active-active nodes in cluster, I have gone through various websites, there they have mentioned the theory concept of it. But I want to implement to verify how active-active nodes actually work.
Are there any resources which talks about Postgresql active-active node implementation? If yes, please provide me the resource information or url.
Thanks
Vidyashree H S
Hi
You can use BDR, you can have a look on the following link.
Thanks
Kashif Zeeshan
Bitnine Global
On Thu, May 9, 2024 at 3:28 PM Vidyashree H S <Shreevidya.hs@exaleapsemi.com> wrote:
Hi,I'm using Postgresql 15.4 version on RISCV architectureI'm trying to implement active-active nodes in cluster, I have gone through various websites, there they have mentioned the theory concept of it. But I want to implement to verify how active-active nodes actually work.Are there any resources which talks about Postgresql active-active node implementation? If yes, please provide me the resource information or url.ThanksVidyashree H S
That is a pretty old page. There are other solutions, such as pgedge, but the three most important questions when it comes to active-active replication are:
* Do you really, really need it? (hint: the answer is no)
* What problem are you trying to solve?
* Are you really willing to suffer the tradeoffs?
Cheers,
Greg
P.S. Please upgrade to v15.7
On Thu, May 9, 2024 at 06:33:39PM -0400, Greg Sabino Mullane wrote: > > https://wiki.postgresql.org/wiki/Multimaster > > > That is a pretty old page. There are other solutions, such as pgedge, but the > three most important questions when it comes to active-active replication are: > > * Do you really, really need it? (hint: the answer is no) > * What problem are you trying to solve? > * Are you really willing to suffer the tradeoffs? Agreed, see this: https://momjian.us/main/blogs/pgblog/2018.html#December_24_2018 -- Bruce Momjian <bruce@momjian.us> https://momjian.us EDB https://enterprisedb.com Only you can decide what is important to you.
Thanks all for your inputs.
- Currently I'm working on active-passive(Primary and standby scenario).
- I'm preparing one study report on active-active node implementation which talks about active-active nodes background, theoretical explanation, implementation part which includes some trails on this. For that, I'm checking for the resources.
Thanks
Vidyashree H S
From: Bruce Momjian <bruce@momjian.us>
Sent: Friday, May 10, 2024 4:53 AM
To: Greg Sabino Mullane <htamfids@gmail.com>
Cc: Kashif Zeeshan <kashi.zeeshan@gmail.com>; Vidyashree H S <Shreevidya.hs@exaleapsemi.com>; pgsql-general@lists.postgresql.org <pgsql-general@lists.postgresql.org>
Subject: Re: Postgresql active-active nodes in cluster
Sent: Friday, May 10, 2024 4:53 AM
To: Greg Sabino Mullane <htamfids@gmail.com>
Cc: Kashif Zeeshan <kashi.zeeshan@gmail.com>; Vidyashree H S <Shreevidya.hs@exaleapsemi.com>; pgsql-general@lists.postgresql.org <pgsql-general@lists.postgresql.org>
Subject: Re: Postgresql active-active nodes in cluster
On Thu, May 9, 2024 at 06:33:39PM -0400, Greg Sabino Mullane wrote:
>
> https://wiki.postgresql.org/wiki/Multimaster
>
>
> That is a pretty old page. There are other solutions, such as pgedge, but the
> three most important questions when it comes to active-active replication are:
>
> * Do you really, really need it? (hint: the answer is no)
> * What problem are you trying to solve?
> * Are you really willing to suffer the tradeoffs?
Agreed, see this:
https://momjian.us/main/blogs/pgblog/2018.html#December_24_2018
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
[EXT]
>
> https://wiki.postgresql.org/wiki/Multimaster
>
>
> That is a pretty old page. There are other solutions, such as pgedge, but the
> three most important questions when it comes to active-active replication are:
>
> * Do you really, really need it? (hint: the answer is no)
> * What problem are you trying to solve?
> * Are you really willing to suffer the tradeoffs?
Agreed, see this:
https://momjian.us/main/blogs/pgblog/2018.html#December_24_2018
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
[EXT]
Hi,
- Is that multi master replication is not recommended to do ?
- If we can do, can I get any resource for implementing that on PostgreSQL which is open-source?
Thanks,
Vidyshree H S
From: Vidyashree H S <Shreevidya.hs@exaleapsemi.com>
Sent: Friday, May 10, 2024 10:48 AM
To: Bruce Momjian <bruce@momjian.us>; Greg Sabino Mullane <htamfids@gmail.com>
Cc: Kashif Zeeshan <kashi.zeeshan@gmail.com>; pgsql-general@lists.postgresql.org <pgsql-general@lists.postgresql.org>
Subject: Re: Postgresql active-active nodes in cluster
Sent: Friday, May 10, 2024 10:48 AM
To: Bruce Momjian <bruce@momjian.us>; Greg Sabino Mullane <htamfids@gmail.com>
Cc: Kashif Zeeshan <kashi.zeeshan@gmail.com>; pgsql-general@lists.postgresql.org <pgsql-general@lists.postgresql.org>
Subject: Re: Postgresql active-active nodes in cluster
Thanks all for your inputs.
- Currently I'm working on active-passive(Primary and standby scenario).
- I'm preparing one study report on active-active node implementation which talks about active-active nodes background, theoretical explanation, implementation part which includes some trails on this. For that, I'm checking for the resources.
Thanks
Vidyashree H S
From: Bruce Momjian <bruce@momjian.us>
Sent: Friday, May 10, 2024 4:53 AM
To: Greg Sabino Mullane <htamfids@gmail.com>
Cc: Kashif Zeeshan <kashi.zeeshan@gmail.com>; Vidyashree H S <Shreevidya.hs@exaleapsemi.com>; pgsql-general@lists.postgresql.org <pgsql-general@lists.postgresql.org>
Subject: Re: Postgresql active-active nodes in cluster
Sent: Friday, May 10, 2024 4:53 AM
To: Greg Sabino Mullane <htamfids@gmail.com>
Cc: Kashif Zeeshan <kashi.zeeshan@gmail.com>; Vidyashree H S <Shreevidya.hs@exaleapsemi.com>; pgsql-general@lists.postgresql.org <pgsql-general@lists.postgresql.org>
Subject: Re: Postgresql active-active nodes in cluster
On Thu, May 9, 2024 at 06:33:39PM -0400, Greg Sabino Mullane wrote:
>
> https://wiki.postgresql.org/wiki/Multimaster
>
>
> That is a pretty old page. There are other solutions, such as pgedge, but the
> three most important questions when it comes to active-active replication are:
>
> * Do you really, really need it? (hint: the answer is no)
> * What problem are you trying to solve?
> * Are you really willing to suffer the tradeoffs?
Agreed, see this:
https://momjian.us/main/blogs/pgblog/2018.html#December_24_2018
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
[EXT]
>
> https://wiki.postgresql.org/wiki/Multimaster
>
>
> That is a pretty old page. There are other solutions, such as pgedge, but the
> three most important questions when it comes to active-active replication are:
>
> * Do you really, really need it? (hint: the answer is no)
> * What problem are you trying to solve?
> * Are you really willing to suffer the tradeoffs?
Agreed, see this:
https://momjian.us/main/blogs/pgblog/2018.html#December_24_2018
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
[EXT]
On Mon, May 13, 2024 at 2:53 AM Vidyashree H S <Shreevidya.hs@exaleapsemi.com> wrote:
No, it is not recommended, as it has a very, very narrow use case, and comes with a lot of drawbacks. Sure, you COULD configure your car to also be able to ride across the river like a boat, but it's far easier to use a bridge, or a barge. And now your car is harder to care for, and has a lot more ways in which it could break.
- If we can do, can I get any resource for implementing that on PostgreSQL which is open-source?
You still have not told us your use case. That can help us to guide you to the right solution. But for totally open source solutions there are not many out there. Here are some:
You can also in theory use logical replication if at least version 16:
Cheers,
Greg