Обсуждение: pg_dump and pg_restore with different owners

Hello everyone!

We have a two servers, "devel" and "live", both running PostgreSQL
8.1.8. At the devel server there is the database "ots_devel" owned by
user "ots_devel". At the live server there is the database "ots_live"
owned by the user "ots_live". They are normal users, with no ability to
create databases or roles. I have access as superuser.

I want to dump the database "ots_devel", then copy it to the live server
and restore it under a different name ("ots_live") and owned by a
different user "ots_live". These are the commands I am using:

- At the devel server:

pg_dump --oids --no-owner --format=c --file=ots_devel.bak ots_devel

- At the live server:

createuser --no-superuser --no-createdb --no-createrole --pwprompt ots_live

createdb --encoding=UTF-8 --owner=ots_live ots_live

pg_restore --no-owner --dbname=ots_live ots_devel.bak

If I do this, there is no warning, there is no error. But the user
ots_live does not have the right permissions over the tables in the
database. He is not the owner of those objects or the permissions are
not right.

Then I tried restoring this way:

pg_restore --no-owner --dbname=ots_live  --host=127.0.0.1 -U ots_live -W
ots_devel.bak

But I got these errors:

pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 3751; 0 0 COMMENT
SCHEMA public postgres
pg_restore: [archiver (db)] could not execute query: ERROR:  must be
owner of schema public
     Command was:
COMMENT ON SCHEMA public IS 'Standard public schema';
pg_restore: WARNING:  no privileges could be revoked
pg_restore: WARNING:  no privileges could be revoked
pg_restore: WARNING:  no privileges were granted
pg_restore: WARNING:  no privileges were granted
WARNING: errors ignored on restore: 1

What I want is that user "ots_live" is the new only owner of everything
inside the database "ots_live". I think that the problem is not when
working inside the database "ots_live", but when updating the schemas,
but I don't know how to prevent that from happening.

I've read about authorization, but I don't know how to apply it to my case.

Any hints? Thanks in advance.

--
Jaume Sabater
http://linuxsilo.net/

"Ubi sapientas ibi libertas"

Jaume Sabater wrote:

> Hello everyone!

I am resending this email to see whether I have better luck now. I've
been digging the Internet with no luck for the past few days.

> We have a two servers, "devel" and "live", both running PostgreSQL
> 8.1.8. At the devel server there is the database "ots_devel" owned by
> user "ots_devel". At the live server there is the database "ots_live"
> owned by the user "ots_live". They are normal users, with no ability to
> create databases or roles. I have access as superuser.
>
> I want to dump the database "ots_devel", then copy it to the live server
> and restore it under a different name ("ots_live") and owned by a
> different user "ots_live". These are the commands I am using:
>
> - At the devel server:
>
> pg_dump --oids --no-owner --format=c --file=ots_devel.bak ots_devel
>
> - At the live server:
>
> createuser --no-superuser --no-createdb --no-createrole --pwprompt ots_live
>
> createdb --encoding=UTF-8 --owner=ots_live ots_live
>
> pg_restore --no-owner --dbname=ots_live ots_devel.bak
>
> If I do this, there is no warning, there is no error. But the user
> ots_live does not have the right permissions over the tables in the
> database. He is not the owner of those objects or the permissions are
> not right.
>
> Then I tried restoring this way:
>
> pg_restore --no-owner --dbname=ots_live  --host=127.0.0.1 -U ots_live -W
> ots_devel.bak
>
> But I got these errors:
>
> pg_restore: [archiver (db)] Error while PROCESSING TOC:
> pg_restore: [archiver (db)] Error from TOC entry 3751; 0 0 COMMENT
> SCHEMA public postgres
> pg_restore: [archiver (db)] could not execute query: ERROR:  must be
> owner of schema public
>     Command was:
> COMMENT ON SCHEMA public IS 'Standard public schema';
> pg_restore: WARNING:  no privileges could be revoked
> pg_restore: WARNING:  no privileges could be revoked
> pg_restore: WARNING:  no privileges were granted
> pg_restore: WARNING:  no privileges were granted
> WARNING: errors ignored on restore: 1
>
> What I want is that user "ots_live" is the new only owner of everything
> inside the database "ots_live". I think that the problem is not when
> working inside the database "ots_live", but when updating the schemas,
> but I don't know how to prevent that from happening.
>
> I've read about authorization, but I don't know how to apply it to my case.
>
> Any hints? Thanks in advance.
>


--
Jaume Sabater
http://linuxsilo.net/

"Ubi sapientas ibi libertas"

Jaume Sabater <jsabater@linuxsilo.net> writes:
>> But I got these errors:
>>
>> pg_restore: [archiver (db)] Error while PROCESSING TOC:
>> pg_restore: [archiver (db)] Error from TOC entry 3751; 0 0 COMMENT
>> SCHEMA public postgres
>> pg_restore: [archiver (db)] could not execute query: ERROR:  must be
>> owner of schema public
>> Command was:
>> COMMENT ON SCHEMA public IS 'Standard public schema';
>> pg_restore: WARNING:  no privileges could be revoked
>> pg_restore: WARNING:  no privileges could be revoked
>> pg_restore: WARNING:  no privileges were granted
>> pg_restore: WARNING:  no privileges were granted
>> WARNING: errors ignored on restore: 1

You can ignore these.  --no-owner plus do the restore as the new owner
is the correct procedure.

            regards, tom lane