Patterns to look for in the PostgreSQL server log

On 3/10/20 9:57 AM, Mageshwaran Janarthanam wrote:

Hi Team...I am trying to setup some monitoring over the PostgreSQL
server log. I am not clear which error I should be most concerned about.
Could you please share your thoughts on what pattern I should search in
the log file?

That really depends on you. To get an idea of what the message levels
are being triggered for take a look at:

https://www.postgresql.org/docs/12/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHAT

Table 19.1. Message Severity Levels

--
Adrian Klaver
adrian.klaver@aklaver.com

From: Mageshwaran Janarthanam <mageshwaran.janarthanam@gmail.com>

Hi Team...I am trying to setup some monitoring over the PostgreSQL server log. I am not clear which error I should be most concerned about. Could you please share your thoughts on what pattern I should search in the log file?

I'd treat it like any other log and apply negative filters; i.e. filter out
things that aren't a problem, which leaves things you do care about and
anything unexpected (which might cause you to add another filter to remove
it for next time if you find it's not really a problem).

Adrian is giving good advice too. Understand the log levels and set your config
appropriately for your situation and comfort level.
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