Обсуждение: Incremental Postgres database backup

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Incremental Postgres database backup

От
Firthouse banu
Дата:
Hello Team, 

Needed an expert advice. 
Can you guys suggest me to a open source tool which can be used to take incremental backup of individual Postgres databases… 

We have very large databases whose sizes are again TBs when we do pg_dump or pg_dump all its taking days to complete backups ..

Thanks in advance 

Regards
Firthouse

Re: Incremental Postgres database backup

От
Magnus Rolf
Дата:
Hi Frthouse, go look for a tool like barman using the rsync option.
Another tool might be PG backrest. 

Just go to PostgreSQL.org, downloads and search the software libraries. https://www.postgresql.org/download/products/1-administrationdevelopment-tools/

Good luck,
Magnus Rolf


From: Firthouse banu <penguinsfairy@gmail.com>
Sent: Monday, March 7, 2022 6:53:32 AM
To: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>; pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: Incremental Postgres database backup
 
Hello Team, 

Needed an expert advice. 
Can you guys suggest me to a open source tool which can be used to take incremental backup of individual Postgres databases… 

We have very large databases whose sizes are again TBs when we do pg_dump or pg_dump all its taking days to complete backups ..

Thanks in advance 

Regards
Firthouse

Re: Incremental Postgres database backup

От
Ron
Дата:
On 3/6/22 23:53, Firthouse banu wrote:
> Hello Team,
>
> Needed an expert advice.
> Can you guys suggest me to a open source tool which can be used to take 
> incremental backup of individual Postgres databases…
>
> We have very large databases whose sizes are again TBs when we do pg_dump 
> or pg_dump all its taking days to complete backups ..

We use PgBackRest, and are very pleased with it.

-- 
Angular momentum makes the world go 'round.



Re: Incremental Postgres database backup

От
Karl Denninger
Дата:
On 3/7/2022 09:03, Ron wrote:
On 3/6/22 23:53, Firthouse banu wrote:
Hello Team,

Needed an expert advice.
Can you guys suggest me to a open source tool which can be used to take incremental backup of individual Postgres databases…

We have very large databases whose sizes are again TBs when we do pg_dump or pg_dump all its taking days to complete backups ..

We use PgBackRest, and are very pleased with it.

Ditto here.  It works very well and has the advantage of being able to produce an immediately-startable copy of the master.

One caution; you have to pay attention when doing upgrades, even of minor versions.

The other obvious option is online replication.

--
Karl Denninger
karl@denninger.net
The Market Ticker
[S/MIME encrypted email preferred]
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Re: Incremental Postgres database backup

От
Ron
Дата:
On 3/7/22 08:30, Karl Denninger wrote:
[snip]
>
> The other obvious option is online replication.
>

Replication is not a backup solution!!!!!

-- 
Angular momentum makes the world go 'round.



Re: Incremental Postgres database backup

От
Firthouse banu
Дата:
Thanks for your responses Ron, Karl and Magnus Rolf. I will explore on PgBackRest…. 

Thanks 
Firthouse

On Mon, 7 Mar 2022 at 8:01 PM, Karl Denninger <karl@denninger.net> wrote:
On 3/7/2022 09:03, Ron wrote:
On 3/6/22 23:53, Firthouse banu wrote:
Hello Team,

Needed an expert advice.
Can you guys suggest me to a open source tool which can be used to take incremental backup of individual Postgres databases…

We have very large databases whose sizes are again TBs when we do pg_dump or pg_dump all its taking days to complete backups ..

We use PgBackRest, and are very pleased with it.

Ditto here.  It works very well and has the advantage of being able to produce an immediately-startable copy of the master.

One caution; you have to pay attention when doing upgrades, even of minor versions.

The other obvious option is online replication.


--
Karl Denninger
karl@denninger.net
The Market Ticker
[S/MIME encrypted email preferred]

Re: Incremental Postgres database backup

От
Karl Denninger
Дата:
On 3/7/2022 09:57, Ron wrote:
On 3/7/22 08:30, Karl Denninger wrote:
[snip]

The other obvious option is online replication.


Replication is not a backup solution!!!!!

That's true, but once you have replication set up you have a local staging source against which to take backups that does not require Internet bandwidth, and thus makes solving the problem MUCH easier.

Getting the I/O from the backup process off the production machine(s) is frequently a good decision.  Online replication does this and moves the locus of your backup away from the online production environment.

If that's not material simply using existing tools (e.g. pgbackrest) does the job all by itself, but if so using replication to get the data where its convenient to use a tool such as pgbackrest absolutely works, separates the I/O load away from the production environment and opens up using block-level or filesystem-level backup tools (e.g. ZFS) as well since even if the database spans a snapshot atomic coherence boundary (which otherwise makes doing that unsafe) you can shut the replicated slave down, take said snapshots and restart it without implicating accessibility to the database.

--
Karl Denninger
karl@denninger.net
The Market Ticker
[S/MIME encrypted email preferred]
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