Where are the postgres logs? - postgresql

Question

I'm using DBeaver to connect the postgres db and want to access the logs via DBeaver.
I run the command below to find log destination and got stderr as the location.
show log_destination ;
How can I reach that file on DB app? FYI, I want all logs, not the logs that are from DBeaver.

Answer 1

On recent PostgreSQL versions, that is simple:
SELECT pg_current_logfile();
For old versions, proceed as follows:
Verify that the logging collector is started:
SHOW logging_collector;
If not, the location of the log depends on how PostgreSQL was started.
If yes, the log will be in log_directory:
SHOW log_directory;
If that is a relative path, it is relative to the PostgreSQL data directory.
Since the log file is on the database server, you probably won't be able to access it with a client tool.

Answer 2

https://tableplus.com/blog/2018/10/how-to-show-queries-log-in-postgresql.html#:~:text=The%20location%20of%20the%20log,pgsql%2Fdata%2Fpg_log%2F%20.
In Ubuntu is under /var/log/postgresql

Answer 3

You can run pg_lsclusters.
> pg_lsclusters
Ver Cluster Port Status Owner Data directory Log file
11 main 5432 online postgres /var/lib/postgresql/11/main /var/log/postgresql/postgresql-11-main.log