Re: Prevent users from executing pg_dump against tables

On Thu, May 2, 2024 at 1:47 AM RAJAMOHAN <garajamohan(at)gmail(dot)com> wrote:

> Hello all,
>
> In our production db infrastructure, we have one read_only role which has
> read privileges against all tables in schema A.
>
> We are planning to grant this role to some developers for viewing the
> data, but also I want to limit the users from executing statements like
> copy or using pg_dump. Main reason being I don't want the data to be copied
> from the database to their local machines.
>
> I tried by implementing triggers, but was not able to figure out a way to
> restrict the pg_dump and allow only select statements.
>

> Is there a way to implement this? Please advise.
> <garajamohan(at)gmail(dot)com>
>

If you can query a table, then you can save the query contents to your
local context. That's a fundamental law of nature, since you gave them
read privs.

For example:
psql --host=SomeEC2Node $DB -Xc "SELECT * FROM read_only_table;" >
read_only_table.txt

That even works on Windows.