Here I wanted to document how to setup a python based backend (here: Odoo, but it could also be for example Django) on a pristine Debian / Ubuntu on
After a new installation of Debian / Ubuntu you need to install a couple of packages to start of with a usable system, we add the following packages via apt-get:
sudo apt-get install chromium, git, qdirstat, make, build-essential, python3
(Qdirstat is not needed always needed but sometimes helpful to have for a shell equivalent you can also use / install ncdu instead.)
Next, we install the packagemanager for python:
sudo apt-get install pip, pipx
Then we download the odoo (pr django or flask) software by cloning the git repos to the localhost (to spare a few bytes, we only take the latest branch)
git clone git@github.com:odoo/odoo.git --single-branch -b 18.0 odoo
Next we need to download and install postgresql (the database behind Odoo) :
sudo apt-get install postgresql
This command will install postgresql in the version 15.
After that then we need to go into the odoo directory and create a virtual environment which is done via the following three commands sven@debian:~/software cd odoo sven@debian:~/software/odoo$ python3 -m venv venv sven@debian:~/software/odoo$ source venv/bin/activate
That next command downloads a couple of all python based dependencies, for example werkzeug and pytz
pipx install -r requirements.txt
Trigger für man-db (2.11.2-2) werden verarbeitet ...
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(odoo-venv) sven@debian:~/software/odoo$ pip3 install -r requirements.txt
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Created wheel for cbor2: filename=cbor2-5.4.2-cp311-cp311-linux_x86_64.whl size=171878 sha256=a2561520f78ff510ee0de12d15e40d10244c8c18c1a5c4c64bff0954e91637bc
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Building wheel for python-ldap (pyproject.toml) ... error
error: subprocess-exited-with-error
× Building wheel for python-ldap (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [124 lines of output]
/tmp/pip-build-env-3ivowifu/overlay/lib/python3.11/site-packages/setuptools/_distutils/dist.py:270: UserWarning: Unknown distribution option: 'test_suite'
warnings.warn(msg)
running bdist_wheel
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running build_py
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creating build/lib.linux-x86_64-cpython-311/ldap
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copying Lib/ldap/pkginfo.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/modlist.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/logger.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/ldapobject.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/functions.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/filter.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/dn.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/constants.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/compat.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/cidict.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/asyncsearch.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/async.py -> build/lib.linux-x86_64-cpython-311/ldap
copying Lib/ldap/__init__.py -> build/lib.linux-x86_64-cpython-311/ldap
creating build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/vlv.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/sss.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/simple.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/sessiontrack.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/readentry.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/pwdpolicy.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/psearch.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/ppolicy.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/pagedresults.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/openldap.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/libldap.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/deref.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
copying Lib/ldap/controls/__init__.py -> build/lib.linux-x86_64-cpython-311/ldap/controls
creating build/lib.linux-x86_64-cpython-311/ldap/extop
copying Lib/ldap/extop/passwd.py -> build/lib.linux-x86_64-cpython-311/ldap/extop
copying Lib/ldap/extop/dds.py -> build/lib.linux-x86_64-cpython-311/ldap/extop
copying Lib/ldap/extop/__init__.py -> build/lib.linux-x86_64-cpython-311/ldap/extop
creating build/lib.linux-x86_64-cpython-311/ldap/schema
copying Lib/ldap/schema/tokenizer.py -> build/lib.linux-x86_64-cpython-311/ldap/schema
copying Lib/ldap/schema/subentry.py -> build/lib.linux-x86_64-cpython-311/ldap/schema
copying Lib/ldap/schema/models.py -> build/lib.linux-x86_64-cpython-311/ldap/schema
copying Lib/ldap/schema/__init__.py -> build/lib.linux-x86_64-cpython-311/ldap/schema
creating build/lib.linux-x86_64-cpython-311/slapdtest
copying Lib/slapdtest/_slapdtest.py -> build/lib.linux-x86_64-cpython-311/slapdtest
copying Lib/slapdtest/__init__.py -> build/lib.linux-x86_64-cpython-311/slapdtest
running egg_info
writing Lib/python_ldap.egg-info/PKG-INFO
writing dependency_links to Lib/python_ldap.egg-info/dependency_links.txt
writing requirements to Lib/python_ldap.egg-info/requires.txt
writing top-level names to Lib/python_ldap.egg-info/top_level.txt
reading manifest file 'Lib/python_ldap.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
no previously-included directories found matching 'Doc/.build'
adding license file 'LICENCE'
writing manifest file 'Lib/python_ldap.egg-info/SOURCES.txt'
/tmp/pip-build-env-3ivowifu/overlay/lib/python3.11/site-packages/setuptools/command/build_py.py:212: _Warning: Package 'slapdtest.certs' is absent from the `packages` configuration.
!!
********************************************************************************
############################
# Package would be ignored #
############################
Python recognizes 'slapdtest.certs' as an importable package[^1],
but it is absent from setuptools' `packages` configuration.
This leads to an ambiguous overall configuration. If you want to distribute this
package, please make sure that 'slapdtest.certs' is explicitly added
to the `packages` configuration field.
Alternatively, you can also rely on setuptools' discovery methods
(for example by using `find_namespace_packages(...)`/`find_namespace:`
instead of `find_packages(...)`/`find:`).
You can read more about "package discovery" on setuptools documentation page:
- https://setuptools.pypa.io/en/latest/userguide/package_discovery.html
If you don't want 'slapdtest.certs' to be distributed and are
already explicitly excluding 'slapdtest.certs' via
`find_namespace_packages(...)/find_namespace` or `find_packages(...)/find`,
you can try to use `exclude_package_data`, or `include-package-data=False` in
combination with a more fine grained `package-data` configuration.
You can read more about "package data files" on setuptools documentation page:
- https://setuptools.pypa.io/en/latest/userguide/datafiles.html
[^1]: For Python, any directory (with suitable naming) can be imported,
even if it does not contain any `.py` files.
On the other hand, currently there is no concept of package data
directory, all directories are treated like packages.
********************************************************************************
!!
check.warn(importable)
creating build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/README -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/ca.conf -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/ca.pem -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/client.conf -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/client.key -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/client.pem -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/gencerts.sh -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/gennssdb.sh -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/server.conf -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/server.key -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
copying Lib/slapdtest/certs/server.pem -> build/lib.linux-x86_64-cpython-311/slapdtest/certs
running build_ext
building '_ldap' extension
creating build/temp.linux-x86_64-cpython-311/Modules
x86_64-linux-gnu-gcc -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -fPIC -DHAVE_SASL -DHAVE_TLS -DHAVE_LIBLDAP_R -DHAVE_LIBLDAP_R -DLDAPMODULE_VERSION=3.4.0 "-DLDAPMODULE_AUTHOR=python-ldap project" "-DLDAPMODULE_LICENSE=Python style" -IModules -I/home/sven/software/odoo/odoo-venv/include -I/usr/include/python3.11 -c Modules/LDAPObject.c -o build/temp.linux-x86_64-cpython-311/Modules/LDAPObject.o
In file included from Modules/LDAPObject.c:3:
Modules/common.h:15:10: fatal error: lber.h: Datei oder Verzeichnis nicht gefunden
15 | #include <lber.h>
| ^~~~~~~~
compilation terminated.
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for python-ldap
Successfully built cbor2
Failed to build python-ldap
ERROR: Could not build wheels for python-ldap, which is required to install pyproject.toml-based projectsNext, if all is installed well, we should face the next error, coming from postgresql:
psycopg2.OperationalError: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: FATAL: role "<user>" does not exist
So, here we need to create a user odoo and add its role to the postgresql pg_hba.conf
sudo adduser --system --home=/opt/odoo --group odoo
Next, open the psql commandline, and add the user / role odoo:
sudo -u postgres psql
CREATE USER odoo WITH PASSWORD 'odoo';
Next, allow the user to create databases:
ALTER USER odoo CREATEDB;
and leave the psql shell: \q
We copy over the file below to /etc/postgresql/15.0/pg_hba.conf :
local all postgres trust
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
local all all trust
# IPv4 local connections:
host all all 127.0.0.1/32 scram-sha-256
# IPv6 local connections:
host all all ::1/128 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local replication all peer
host replication all 127.0.0.1/32 scram-sha-256
host replication all ::1/128 scram-sha-256…and start odoo-bin via
python3 ./odoo-bin -c debian/odoo.conf
Next we might still need to install the one or other packages before we can visit the site on the webbrowser.