Re: Log file retention

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Instead of %a should we use postgresql-%d.log ?

On Tue, 19 Mar 2024, 13:57 Rajesh Kumar, <rajeshkumar.dba09@xxxxxxxxx> wrote:
Thanks...I got the same info from postgrespro after searching this for long time..

Can we also set for one month the same way?


On Tue, 19 Mar 2024, 13:50 Gabriel Guillem Barceló Soteras, <gbarcelo@xxxxxxxxxxxxxx> wrote:

From: Ron Johnson <ronljohnsonjr@xxxxxxxxx>
Date: Tuesday, 19 March 2024 at 09:16
To: Pgsql-admin <pgsql-admin@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: Log file retention

On Tue, Mar 19, 2024 at 4:04AM Rajesh Kumar <rajeshkumar.dba09@xxxxxxxxx> wrote:



How to keep log files only for 7 days


logrotate?  A bash script in a cron job? 



I think it is the default behaviour on default install:


  1. Edit the postgresql.conf File:
  2. Locate the postgresql.conf file for your PostgreSQL installation.
  3. Configure the Following Parameters:
    1. Set log_filename to server_log.%a. This will create one log file per day named server_log.Mon, server_log.Tue, etc.
    2. Enable log_truncate_on_rotation to automatically overwrite last week’s log with this week’s log.
    3. Set log_rotation_age to 1440 (minutes), which corresponds to 24 hours. This ensures that logs are rotated daily.
  4. Example Configuration:


log_filename = 'server_log.%a'

log_truncate_on_rotation = on

log_rotation_age = 1440


Still keep an eye on log_rotation_size


After making these changes, restart your PostgreSQL server for the new settings to take effect.


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