This issue is tracked here: https://redmine.postgresql.org/issues/4143.
On Thu, 4 Apr 2019 at 19:06, Shaheed Haque <shaheedha...@gmail.com> wrote: > > Thanks for the kind (and quick) replies. My last email crossed with > the ones from Dave and Murtaza... > > On Thu, 4 Apr 2019 at 19:03, Dave Page <dp...@pgadmin.org> wrote: > > > > Downgrade psycopg2 to 2.7.7 (or whatever came before 2.8). Apparently they > > broke backwards compatibility:-( > > > > -- > > Dave Page > > Blog: http://pgsnake.blogspot.com > > Twitter: @pgsnake > > > > EnterpriseDB UK:http://www.enterprisedb.com > > The Enterprise PostgreSQL Company > > > > On 4 Apr 2019, at 17:33, Shaheed Haque <shaheedha...@gmail.com> wrote: > > > > I can login, but when I click on "Servers", nothing happens on screen > > and the error log gets this: > > > > [2019-04-04 16:10:10 +0000] [5850] [INFO] Starting gunicorn 19.9.0 > > [2019-04-04 16:10:10 +0000] [5850] [INFO] Listening at: > > unix:/home/ubuntu/pgadmin.sock (5850) > > [2019-04-04 16:10:10 +0000] [5850] [INFO] Using worker: gthread > > [2019-04-04 16:10:10 +0000] [5853] [INFO] Booting worker with pid: 5853 > > 2019-04-04 16:10:25,732: ERROR flask.app: > > 'psycopg2.extensions.Column' object has no attribute '_asdict' > > Traceback (most recent call last): > > File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line > > 1813, in full_dispatch_request > > rv = self.dispatch_request() > > File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line > > 1799, in dispatch_request > > return self.view_functions[rule.endpoint](**req.view_args) > > File "/usr/local/lib/python3.6/dist-packages/flask/views.py", line 88, in > > view > > return self.dispatch_request(*args, **kwargs) > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/browser/utils.py", > > line 259, in dispatch_request > > return method(*args, **kwargs) > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/browser/utils.py", > > line 309, in children > > children.extend(module.get_nodes(*args, **kwargs)) > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/browser/server_groups/servers/__init__.py", > > line 127, in get_nodes > > in_recovery, wal_paused = recovery_state(conn, manager.version) > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/browser/server_groups/servers/__init__.py", > > line 52, in recovery_state > > status, result = connection.execute_dict(recovery_check_sql) > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/utils/driver/psycopg2/connection.py", > > line 1202, in execute_dict > > desc.to_dict() for desc in cur.ordered_description() > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/utils/driver/psycopg2/connection.py", > > line 1202, in <listcomp> > > desc.to_dict() for desc in cur.ordered_description() > > File > > "/usr/local/lib/python3.6/dist-packages/pgadmin4/pgadmin/utils/driver/psycopg2/cursor.py", > > line 94, in to_dict > > ores = OrderedDict(self.orig_col._asdict()) > > AttributeError: 'psycopg2.extensions.Column' object has no attribute > > '_asdict' > > > > It seems as though the version of psycopg2 is not what is expected, > > rather than anything to do with "builtins.SERVER_MODE = True"? By way > > of full disclosure, I do in fact have both psycopg2 AND > > psycopg2-binary installed [1] but some quick experiments removing one > > or other did not solve the problem. > > > > Have I overlooked something? > > > > Thanks, Shaheed > > > > [1] this came up in another discussion recently, and it seems that I > > ought to remove the psycopg2-binary though 4.2 was OK with this setup. > > > > On Thu, 4 Apr 2019 at 15:04, Dave Page <dp...@pgadmin.org> wrote: > > > > > > Hi > > > > > > It worked fine when I tested it. If you don't get any errors and you get a > > login prompt, it should all be good. > > > > > > On Thu, Apr 4, 2019 at 3:01 PM Shaheed Haque <shaheedha...@gmail.com> wrote: > > > > > > Hi Dave, > > > > > > I'm just migrating to the fixes in 4.4. Can I just double check one > > > > thing? In my original hack, I needed to create a link "wsgi.py" -> > > > > "pgAdmin4.py", so the the corresponding gunicorn command is something > > > > like this: > > > > > > gunicorn ... --bind unix:/.../pgadmin.sock wsgi:application > > > > > > Now, in the documentation updates as part of this fix, the last > > > > argument to that line reads "pgAdmin4:app" and not "wsgi:application". > > > > The reason I though I needed to use the wsgi.py file is that it > > > > contains these lines amongst other: > > > > > > # Ensure the global server mode is set. > > > > builtins.SERVER_MODE = True > > > > > > I'm not sure if, by following the updated docs, I am missing a > > > > necessary setting? > > > > > > Thanks, Shaheed > > > > > > On Tue, 5 Mar 2019 at 09:11, Dave Page <dp...@pgadmin.org> wrote: > > > > > > You're welcome. Sorry it took so long to realise the main issue was only > > applicable to Gunicorn! > > > > > > On Mon, Mar 4, 2019 at 6:29 PM Shaheed Haque <srha...@theiet.org> wrote: > > > > > > Dave, > > > > > > Thanks for taking this forward, I look forward to 4.4! I also noted with > > interest that we can use "pgAdmin4:app" rather than my hacky link to the > > pgAdmin4.wsgi, so that means a completely hack-free solution :-). > > > > > > > > Shaheed > > > > > > On Mon, 4 Mar 2019 at 16:33, Dave Page <dp...@pgadmin.org> wrote: > > > > > > Hi > > > > > > On Fri, Mar 1, 2019 at 9:30 AM Shaheed Haque <srha...@theiet.org> wrote: > > > > > > OK, I got it working. This is how... > > > > > > On Mon, 25 Feb 2019 at 23:25, Shaheed Haque <srha...@theiet.org> wrote: > > > > > > Hi, > > > > > > I'm a relative noob when it comes to the world of nginx, wsgi and so forth, > > but I do have several other things working (a Django app under gunicorn and > > the RabbitMQ web UI directly behind nginx). However, I'm rather stuck > > getting pgAdmin4 to run at http://mydomain.com:80/pgadmin behind nginx. Is > > there a simple, up-to-date example of how to do this (I'm running the > > latest, v4.2, of pgAdmin4)? > > > > > > I'm aware of threads such as > > https://www.postgresql.org/message-id/2197768425D7F5479A0FFB3FEC212F7FF602B871%40aesmail.surcouf.local, > > and several others but not been able to come up with a clear approach: > > > > > > One of the several variables I'm struggling to understand is the choice of > > whether to run pgAdmin4.py on port 5050 directly behind nginx, or as a WSGI > > app under gunicorn. I assume the latter should be easier to set up, but > > I've tried both (modelled on what I have working, and various references). > > One combination I tried was: > > > > > > - Creating a softlink from pgadmin4.py to pgAdmin4.wsgi > > > > - Using gunicorn to run the pgadmin4.py to a unix domain socket like this: > > > > > > $ /usr/local/bin/gunicorn -w 1 --bind unix:/home/ubuntu/pgadmin.sock > > pgadmin4:application > > > > > > - Serving behind nginx like this: > > > > > > location /pgadmin { > > > > rewrite ^/pgadmin/(.*) /$1 break; > > > > include proxy_params; > > > > proxy_pass http://unix:/home/ubuntu/pgadmin.sock; > > > > } > > > > > > But all I get is a stubborn 404. Any pointers welcome... > > > > > > First, I got over the 404s (caused, it seems, by me forgetting just how > > much my browser had cached :-0). The next problem was with the nginx config > > fragment: as soon as pgAdmin responded, it of course started the browser > > looking for top level URLs such as /browser and /static which are obviously > > not under /pgadmin. The to this key was a piece of code in > > https://stackoverflow.com/a/50515636/6332554, which basically adds the > > concept of a SCRIPT_NAME by hacking a small wodge of code into pgAdmin4.py. > > > > > > The SCRIPT_NAME is set by an nginx fragment like this: > > > > > > location /pgadmin { > > > > rewrite ^/pgadmin/(.*)$ /\$1 break; > > > > include proxy_params; > > > > proxy_pass http://unix:/home/$CLOUD_USER/pgadmin.sock; > > > > proxy_set_header X-Script-Name /pgadmin; > > > > } > > > > > > In addition to that change, as previously noted, I needed to create a link > > to pgAdmin4.wsgi to allow gunicorn to pick it up. I change the name I used > > so I ended up with the link being "wsgi.py" -> "pgAdmin4.py", so the the > > corresponding gunicorn command is something like this: > > > > > > gunicorn ... --bind unix:/.../pgadmin.sock wsgi:application > > > > > > Now, IIUC, the notion of SCRIPT_NAME is somewhat standard, and needed to > > solve this issue of running pgAdmin in server mode, but sharing the domain > > with other applications. Would there be interest in making the needed code > > an integral part of pgAdmin? If so, I'd be happy to file a feature request. > > > > > > Thanks, Shaheed > > > > > > > > Thanks for your work on this. > > > > > > I've committed a change to add the reverse proxy code, and to put some more > > examples in the docs: > > https://redmine.postgresql.org/projects/pgadmin4/repository/revisions/f401def044c8b47974d58c71ff9e6f71f34ef41d > > > > > > FWIW, I think the reason that this was an issue for so long is that you > > don't need the extra code if you use mod_wsgi or uWSGI - it's only needed > > with Gunicorn. I'll let you guess which of those technologies I'm most > > familiar with! > > > > > > Unfortunately this commit won't make the 4.3 release later this week, but > > it will be in 4.4. The instructions will still be good for scenarios other > > than Gunicorn in a sub-directory though. > > > > > > -- > > > > Dave Page > > > > Blog: http://pgsnake.blogspot.com > > > > Twitter: @pgsnake > > > > > > EnterpriseDB UK: http://www.enterprisedb.com > > > > The Enterprise PostgreSQL Company > > > > > > > > > > -- > > > > Dave Page > > > > Blog: http://pgsnake.blogspot.com > > > > Twitter: @pgsnake > > > > > > EnterpriseDB UK: http://www.enterprisedb.com > > > > The Enterprise PostgreSQL Company > > > > > > > > > > -- > > > > Dave Page > > > > Blog: http://pgsnake.blogspot.com > > > > Twitter: @pgsnake > > > > > > EnterpriseDB UK: http://www.enterprisedb.com > > > > The Enterprise PostgreSQL Company
