Unable to restore postgres database of Django app because of database ownership discrepancies

Question

I am trying to restore a postgres data dump for a Django app of mine. The data dump was extracted from Heroku, and pg_restore latest.dump -d mydb -U postgres was run on an Azure VM with Linux on it.

The user on Heroku is called uauv8b9v4 . There's no similar user on Azure. So when I ran pg_restore on Azure, I got tons of role does not exist errors. Eg:

pg_restore: [archiver (db)] Error from TOC entry 241; 1259 44416 TABLE links_grouptraffic uauv8b9v4
pg_restore: [archiver (db)] could not execute query: ERROR:  role "uauv8b9v4" does not exist
    Command was: ALTER TABLE public.links_grouptraffic OWNER TO uauv8b9v4;

Now accessing my Django app at example.cloudapp.net just shows the following error:

Exception Type: DatabaseError Exception Value:

permission denied for relation links_link

Exception Location: /home/myuser/.virtualenvs/myenv/local/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py in execute, line 54

Note that I got exactly the same permission denied error if I run pg_restore with -Ox ; it doesn't help.

Next, I dropped the database, and ran CREATE USER uauv8b9v4 with password 'password'; , CREATE DATABASE mydb; and GRANT ALL PRIVILEGES ON DATABASE mydb to uauv8b9v4; . I thought now if I ran pg_restore latest.dump -d MYDB -U uauv8b9v4 , my problem will be solved.

Instead I got 3 errors:

1) Must be owner of extension plpgsql :

pg_restore: [archiver (db)] Error while PROCESSING TOC:
pg_restore: [archiver (db)] Error from TOC entry 2584; 0 0 COMMENT EXTENSION plpgsql 
pg_restore: [archiver (db)] could not execute query: ERROR:  must be owner of extension plpgsql
    Command was: COMMENT ON EXTENSION plpgsql IS 'PL/pgSQL procedural language';

2) Permission denied to create extension "pg_stat_statements" :

pg_restore: [archiver (db)] Error from TOC entry 249; 3079 16622 EXTENSION pg_stat_statements 
pg_restore: [archiver (db)] could not execute query: ERROR:  permission denied to create extension "pg_stat_statements"
HINT:  Must be superuser to create this extension.
    Command was: CREATE EXTENSION IF NOT EXISTS pg_stat_statements WITH SCHEMA public;

3) Extension "pg_stat_statements" does not exist :

pg_restore: [archiver (db)] Error from TOC entry 2585; 0 0 COMMENT EXTENSION pg_stat_statements 
pg_restore: [archiver (db)] could not execute query: ERROR:  extension "pg_stat_statements" does not exist
    Command was: COMMENT ON EXTENSION pg_stat_statements IS 'track execution statistics of all SQL statements executed';

Trying to access my website still gives me the original permission denied error.

What do I do to fix this situation? Secondly, I've also begun wondering whether I need to run syncdb in this process at some stage? I tried going through this , but it hasn't solved my problem. I feel I'm missing something fundamental.

Answer 1

我认为您应该尝试像这样恢复： pg_restore --verbose --clean --no-acl --no-owner -U myuser -d mydb latest.dump其中， myuser是Linux计算机上的超级用户（您没有（具有名为uauv8b9v4的用户即可进行此工作），如果正确完成，则无需运行syncdb 。