Hi Massimo,

Yes this time I was running it from a fresh installed ubuntu server so
PostgreSQL was using the default port.

I changed the pool_size to 0 and tried a couple of combinations. Maybe
it is a configuration problem with my PostgreSQL?

1. If I run:

sudo -u www-data python www-data/web2py -a 0 -i 0.0.0.0

I will got an error of "ProgrammingError: relation 'auth_group'
already exists".

2. visit the site runs on WSGI+apache gives me:

RuntimeError: Failure to connect to DB. Tried 5 times

3. Launch site with the identical web2py code in my folder:

python web2py.py -a 0 -i 0.0.0.0

it runs without any problems.

Here is part of my pg_hba.conf:

local   all         postgres                          ident
# TYPE  DATABASE    USER        CIDR-ADDRESS          METHOD
local   all         web2py                            ident
host    all         all         192.168.0.0/24        md5
host    all         all         127.0.0.1/32          md5
host    all         all         ::1/128               md5

and my postgresql.conf is:

listen_addresses = '*'          # what IP address(es) to listen on;
port = 5432                             # (change requires restart)
max_connections = 100                   # (change requires restart)

Thank you very much!

Regards,
Zhe


On Aug 8, 2:30 am, mdipierro <[email protected]> wrote:
> Didn't you say?
>
> db = DAL('postgres://web2py:[email protected]:1216/labdb',
> pool_size=10)
>
> is the DB at port 1216 or 5432?
> Can you try with pool_size=0 just to isolate the problem.
>
> On Aug 7, 6:42 pm, Zhe Li <[email protected]> wrote:
>
>
>
> > Hi Massimo,
>
> > I am using PostgreSQL 8.4.
>
> > I added print(msg) and got the message when runnning python web2.py -a
> > 123, the string looks like
>
> > dbname='labdb' user='web2py' host='localhost' port=5432
> > password='test123'
>
> > I only have this error when using web2py with WSGI. But if I go to the
> > shell from the admin page running with WSGI, I could use PostgreSQL
> > without any problems. I tried this:
>
> > conn = psycopg2.connect("dbname='labdb' user='web2py' host='localhost'
> > port=5432 password='test123'")
>
> > and it works, I successfully added a table and a test record...
>
> > Thank you!
>
> > Cheers,
> > Zhe
>
> > On Aug 7, 5:30 pm, mdipierro <[email protected]> wrote:
>
> > > One more test:
>
> > > In gluon/sql.py
>
> > > before line 957, print your connection string:
> > >    print msg
> > > Would that connection string work on the shell? Which postgresql
> > > version are you using?
>
> > > On Aug 6, 6:48 am, Zhe Li <[email protected]> wrote:
>
> > > > Yeah, that works fine. It's so odd and frustrating...
>
> > > > On Aug 6, 1:25 pm, mdipierro <[email protected]> wrote:
>
> > > > > I have no idea. Can you connect from a pure python shell using the
> > > > > driver API?
>
> > > > > On Aug 6, 5:55 am, Zhe Li <[email protected]> wrote:
>
> > > > > > thanks!
> > > > > > I tried to replace localhost with 127.0.0.1, 192.168.0.16 (it's
> > > > > > actually ip). but it doesn't work....
>
> > > > > > Cheers,
> > > > > > Zhe
>
> > > > > > On Aug 6, 12:33 pm, mdipierro <[email protected]> wrote:
>
> > > > > > > Try replace
>
> > > > > > > localhost
> > > > > > > with
> > > > > > > 127.0.0.1
> > > > > > > and with the actual IP of the machine. It may not be serving on
> > > > > > > localhost
>
> > > > > > > On Aug 6, 5:25 am, Zhe Li <[email protected]> wrote:
>
> > > > > > > > Hi,
>
> > > > > > > > Thanks! This is the result from trunk.
>
> > > > > > > > Error traceback
> > > > > > > > Traceback (most recent call last):
> > > > > > > >   File "gluon/restricted.py", line 186, in restricted
> > > > > > > >     exec ccode in environment
> > > > > > > >   File 
> > > > > > > > "/home/www-data/web2py/applications/welcome/models/db.py", line
> > > > > > > > 15, in <module>
> > > > > > > >     db = DAL('postgres://web2py:test...@localhost:1216/labdb')  
> > > > > > > >      #
> > > > > > > > if not, use SQLite or other DB
> > > > > > > >   File "gluon/sql.py", line 3911, in DAL
> > > > > > > >     raise RuntimeError, "%s (tried 5 times)" % exception
> > > > > > > > RuntimeError: could not connect to server: Connection refused
> > > > > > > >     Is the server running on host "localhost" and accepting
> > > > > > > >     TCP/IP connections on port 1216?
> > > > > > > > could not connect to server: Connection refused
> > > > > > > >     Is the server running on host "localhost" and accepting
> > > > > > > >     TCP/IP connections on port 1216?
> > > > > > > >  (tried 5 times)
> > > > > > > > Error snapshot
> > > > > > > > Detailed traceback description
> > > > > > > > Exception: <type 'exceptions.RuntimeError'>(could not connect to
> > > > > > > > server: Connection refused Is the server running on host 
> > > > > > > > "localhost"
> > > > > > > > and accepting TCP/IP connections on port 1216? could not 
> > > > > > > > connect to
> > > > > > > > server: Connection refused Is the server running on host 
> > > > > > > > "localhost"
> > > > > > > > and accepting TCP/IP connections on port 1216? (tried 5 times))
> > > > > > > > Python 2.6.5: /usr/bin/python
>
> > > > > > > > This is odd since I can connect to it both from command-line and
> > > > > > > > another machine using web2py account....
>
> > > > > > > > Cheers,
> > > > > > > > Zhe
>
> > > > > > > > On Aug 6, 11:06 am, mdipierro <[email protected]> wrote:
>
> > > > > > > > > Please check the version in trunk. It should give you a more 
> > > > > > > > > detailed
> > > > > > > > > error.
>
> > > > > > > > > On Aug 6, 3:06 am, Zhe Li <[email protected]> wrote:
>
> > > > > > > > > > Hello everyone,
>
> > > > > > > > > > I tried to deploy web2py on my ubuntu server using
> > > > > > > > > > setup_web2py_ubuntu.sh. Everything seemed fine except when 
> > > > > > > > > > I switch
> > > > > > > > > > database from SQLite to PostgreSQL I got:
>
> > > > > > > > > > Error traceback
> > > > > > > > > > Traceback (most recent call last):
> > > > > > > > > >   File "gluon/restricted.py", line 178, in restricted
> > > > > > > > > >     exec ccode in environment
> > > > > > > > > >   File 
> > > > > > > > > > "/home/www-data/web2py/applications/init/models/db.py", line
> > > > > > > > > > 16, in <module>
> > > > > > > > > >     db = DAL('postgres://web2py:[email protected]:1216/labdb',
> > > > > > > > > > pool_size=10)
> > > > > > > > > >   File "gluon/sql.py", line 3911, in DAL
> > > > > > > > > >     raise RuntimeError, "Failure to connect to DB. Tried 5 
> > > > > > > > > > times"
> > > > > > > > > > RuntimeError: Failure to connect to DB. Tried 5 times
>
> > > > > > > > > > but if I run the web server using:
>
> > > > > > > > > > python web2.py
>
> > > > > > > > > > it works fine. I got the same issue with MySQL as well.
>
> > > > > > > > > > Could you tell me what the problem might be? Thanks!
>
> > > > > > > > > > Cheers,
> > > > > > > > > > Zhe

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