Re: Fwd: Log file

Now is there a command to flush the log - delete the content of it?

All I'm looking for in the log are DDL commands - CREATE/ALTER/DELETE ones.

On Wed, Oct 31, 2018 at 12:32 AM Igor Korot <ikorot01(at)gmail(dot)com> wrote:
>
> Hi, Tom,
>
> On Mon, Oct 29, 2018 at 5:08 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> >
> > Igor Korot <ikorot01(at)gmail(dot)com> writes:
> > > On Mon, Oct 29, 2018 at 1:56 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > >> You can set up the log files as readable by the OS group of the server
> > >> (see log_file_mode), and then grant membership in that group to whichever
> > >> OS accounts you trust. You may also need to move the log directory
> > >> out from under $PGDATA to make that work, since PG doesn't like
> > >> world-readable data directories.
> >
> > > I'm trying to make the log file of PG readable of the user who logs in
> > > to the current
> > > OS session. I don't need a write permission, just read.
> > > Because my program will not be started from the "postgres" account.
> >
> > Well, any such setup is a serious security hole in itself, because
> > there is likely to be sensitive data in the postmaster log, eg
> > passwords. (Remember that the log file is global to the whole cluster,
> > it will not contain just data relevant to the current session.)
> > You should only grant access to people who you trust at more or less
> > the level of trust you'd put in the installation DBA.
> >
> > It may be that these concerns are all irrelevant to you because it's
> > a single-user installation anyway, but they're not irrelevant to
> > people running multi-user installations. So that's why you can't
> > get Postgres to do it. In a single-user installation, maybe you
> > should just launch the postmaster as that user.
> >
> > regards, tom lane
>
> OK, I understand.
>
> Thank you.