Install with gunicorn3 not gunicorn

Brian Candler

unread,

Jun 13, 2017, 8:25:18 AM6/13/17

to NetBox

FYI, there's a really nasty problem if you install netbox under ubuntu 16.04 with python 3, and then follow the instructions at https://netbox.readthedocs.io/en/stable/installation/web-server/ which say to do

apt-get install -y gunicorn supervisor

Actually you need to install "gunicorn3" not "gunicorn".

If you try to install "gunicorn" then get into a horribly broken state:

# apt-get install -y gunicorn supervisor

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following additional packages will be installed:

libpython-stdlib libpython2.7-minimal libpython2.7-stdlib python python-gunicorn python-meld3

python-minimal python-pkg-resources python-setuptools python2.7 python2.7-minimal

Suggested packages:

gunicorn-examples python-gevent python-pastedeploy python-setproctitle python-tornado

python-doc python-tk python-setuptools-doc python2.7-doc binfmt-support supervisor-doc

The following NEW packages will be installed:

gunicorn libpython-stdlib libpython2.7-minimal libpython2.7-stdlib python python-gunicorn

python-meld3 python-minimal python-pkg-resources python-setuptools python2.7 python2.7-minimal

supervisor

0 upgraded, 13 newly installed, 0 to remove and 0 not upgraded.

Need to get 4,575 kB of archives.

After this operation, 19.7 MB of additional disk space will be used.

...

Preparing to unpack .../python_2.7.11-1_amd64.deb ...

update-alternatives: warning: forcing reinstallation of alternative /usr/bin/python3 because link group python is broken

Unpacking python (2.7.11-1) ...

...

Setting up python (2.7.11-1) ...

Setting up python-pkg-resources (20.7.0-1) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-pkg-resources (--configure):

subprocess installed post-installation script returned error exit status 1

dpkg: dependency problems prevent configuration of python-setuptools:

python-setuptools depends on python-pkg-resources (= 20.7.0-1); however:

Package python-pkg-resources is not configured yet.

dpkg: error processing package python-setuptools (--configure):

dependency problems - leaving unconfigured

dpkg: dependency problems prevent configuration of python-gunicorn:

python-gunicorn depends on python-pkg-resources; however:

Package python-pkg-resources is not configured yet.

python-gunicorn depends on python-setuptools; however:

Package python-setuptools is not configured yet.

dpkg: error processing package python-gunicorn (--configure):

dependency problems - leaving unconfigured

dpkg: dependency problems prevent configuration of gunicorn:

gunicorn depends on python-gunicorn (= 19.4.5-1ubuntu1); however:

Package python-gunicorn is not configured yet.

gunicorn depends on python-pkg-resources; however:

Package python-pkg-resources is not configured yet.

gunicorn depends on python-setuptools; however:

Package python-setuptools is not confNo apport report written because the error message indicates its a followup error from a previous failure.

No apport report written because the error message indicates its a followup error from a previous failure.

No apport report written because MaxReports is reached already

igured yet.

dpkg: error processing package gunicorn (--configure):

dependency problems - leaving unconfigured

Setting up python-meld3 (1.0.2-2) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-meld3 (--configure):

subprocess installed post-installation script returned error exit status 1

dpkg: dependency problems prevent configuration of supervisor:No apport report written because MaxReports is reached already

supervisor depends on python-meld3; however:

Package python-meld3 is not configured yet.

supervisor depends on python-pkg-resources; however:

Package python-pkg-resources is not configured yet.

dpkg: error processing package supervisor (--configure):

dependency problems - leaving unconfigured

No apport report written because MaxReports is reached already

Errors were encountered while processing:

python-pkg-resources

python-setuptools

python-gunicorn

gunicorn

python-meld3

supervisor

E: Sub-process /usr/bin/dpkg returned an error code (1)

At this point, attempts to remove the broken packages also fail:

# apt-get remove --purge gunicorn supervisor

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages were automatically installed and are no longer required:

python-gunicorn python-meld3 python-pkg-resources python-setuptools

Use 'sudo apt autoremove' to remove them.

The following packages will be REMOVED:

gunicorn* supervisor*

0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.

6 not fully installed or removed.

After this operation, 1,450 kB disk space will be freed.

Do you want to continue? [Y/n] y

(Reading database ... 102594 files and directories currently installed.)

Removing gunicorn (19.4.5-1ubuntu1) ...

Purging configuration files for gunicorn (19.4.5-1ubuntu1) ...

Removing supervisor (3.2.0-2ubuntu0.1) ...

Purging configuration files for supervisor (3.2.0-2ubuntu0.1) ...

Processing triggers for man-db (2.7.5-1) ...

Setting up python-pkg-resources (20.7.0-1) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-pkg-resources (--configure):

subprocess installed post-installation script returned error exit status 1

dpkg: dependency problems prevent configuration of python-setuptools:

python-setuptools depends on python-pkg-resources (= 20.7.0-1); however:

Package python-pkg-resources is not configured yet.

dpkg: error processing package python-setuptools (--configure):

dependency problems - leaving unconfigured

dpkg: dependency problems prevent configuration of python-gunicorn:

python-gunicorn depends on python-pkg-resources; however:

Package python-pkg-resources is not configured yet.

python-gunicorn depends on python-setuptools; however:

Package python-setuptools is not configured yet.

dpkg: error processing package python-gunicorn (--configure):

dependency problems - leaving unconfigured

Setting up python-meld3 (1.0.2-2) ...

No apport report written because the error message indicates its a followup error from a previous failure.

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-meld3 (--configure):

subprocess installed post-installation script returned error exit status 1

No apport report written because MaxReports is reached already

Errors were encountered while processing:

python-pkg-resources

python-setuptools

python-gunicorn

python-meld3

E: Sub-process /usr/bin/dpkg returned an error code (1)

# apt-get autoremove --purge

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages will be REMOVED:

python-gunicorn* python-meld3* python-pkg-resources* python-setuptools*

0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.

4 not fully installed or removed.

After this operation, 1,570 kB disk space will be freed.

Do you want to continue? [Y/n] y

(Reading database ... 102460 files and directories currently installed.)

Removing python-gunicorn (19.4.5-1ubuntu1) ...

Purging configuration files for python-gunicorn (19.4.5-1ubuntu1) ...

Removing python-meld3 (1.0.2-2) ...

File "/usr/bin/pyclean", line 63

except (IOError, OSError), e:

^

SyntaxError: invalid syntax

dpkg: error processing package python-meld3 (--purge):

subprocess installed pre-removal script returned error exit status 1

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error while cleaning up:

subprocess installed post-installation script returned error exit status 1

Removing python-setuptools (20.7.0-1) ...

Removing python-pkg-resources (20.7.0-1) ...

File "/usr/bin/pyclean", line 63

except (IOError, OSError), e:

^

SyntaxError: invalid syntax

dpkg: error processing package python-pkg-resources (--purge):

subprocess installed pre-removal script returned error exit status 1

Errors were encountered while processing:

python-meld3

python-pkg-resources

E: Sub-process /usr/bin/dpkg returned an error code (1)

# dpkg-query -l | grep meld

pF python-meld3 1.0.2-2 all HTML/XML templating system for Python

# dpkg-query -l | grep python-pkg-resources

pF python-pkg-resources 20.7.0-1 all Package Discovery and Resource Access using pkg_resources

Looking at the syntax error for pyclean, I suspect that it's something to do with redirecting "python" to "python3" using update-alternatives, as described at https://netbox.readthedocs.io/en/stable/installation/netbox/

So I put it back using:

update-alternatives --install /usr/bin/python python /usr/bin/python2 2

apt-get remove --purge python-meld3 python-pkg-resources

and indeed, now the package removal was successful.

Then I repeated with:

update-alternatives --install /usr/bin/python python /usr/bin/python2 0

apt-get install -y gunicorn3 supervisor

Unfortunately I get a similar problem:

# apt-get install -y gunicorn3 supervisor

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following additional packages will be installed:

python-meld3 python-pkg-resources python3-gunicorn

Suggested packages:

gunicorn-examples python3-pastedeploy python3-setproctitle python3-tornado python-setuptools

supervisor-doc

The following NEW packages will be installed:

gunicorn3 python-meld3 python-pkg-resources python3-gunicorn supervisor

0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.

Need to get 98.6 kB/491 kB of archives.

After this operation, 2,482 kB of additional disk space will be used.

Get:1 http://gh.archive.ubuntu.com/ubuntu xenial/universe amd64 python3-gunicorn all 19.4.5-1ubuntu1 [81.2 kB]

Get:2 http://gh.archive.ubuntu.com/ubuntu xenial/universe amd64 gunicorn3 all 19.4.5-1ubuntu1 [17.4 kB]

Fetched 98.6 kB in 25s (3,821 B/s)

Selecting previously unselected package python3-gunicorn.

(Reading database ... 102296 files and directories currently installed.)

Preparing to unpack .../python3-gunicorn_19.4.5-1ubuntu1_all.deb ...

Unpacking python3-gunicorn (19.4.5-1ubuntu1) ...

Selecting previously unselected package gunicorn3.

Preparing to unpack .../gunicorn3_19.4.5-1ubuntu1_all.deb ...

Unpacking gunicorn3 (19.4.5-1ubuntu1) ...

Selecting previously unselected package python-pkg-resources.

Preparing to unpack .../python-pkg-resources_20.7.0-1_all.deb ...

Unpacking python-pkg-resources (20.7.0-1) ...

Selecting previously unselected package python-meld3.

Preparing to unpack .../python-meld3_1.0.2-2_all.deb ...

Unpacking python-meld3 (1.0.2-2) ...

Selecting previously unselected package supervisor.

Preparing to unpack .../supervisor_3.2.0-2ubuntu0.1_all.deb ...

Unpacking supervisor (3.2.0-2ubuntu0.1) ...

Processing triggers for man-db (2.7.5-1) ...

Processing triggers for systemd (229-4ubuntu17) ...

Processing triggers for ureadahead (0.100.0-19) ...

Setting up python3-gunicorn (19.4.5-1ubuntu1) ...

Setting up gunicorn3 (19.4.5-1ubuntu1) ...

Setting up python-pkg-resources (20.7.0-1) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-pkg-resources (--configure):

subprocess installed post-installation script returned error exit status 1

Setting up python-meld3 (1.0.2-2) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-meld3 (--configure):

subprocess installed post-installation script returned error exit status 1

dpkg: dependency problems prevent configuration of supervisor:

supervisor depends on python-meld3; however:

Package python-meld3 is not configured yet.

supervisor depends on python-pkg-resources; however:

Package python-pkg-resources is not configured yet.

dpkg: error processing package supervisor (--configure):

dependency problems - leaving unconfigured

No apport report written because the error message indicates its a followup error from a previous failure.

Errors were encountered while processing:

python-pkg-resources

python-meld3

supervisor

E: Sub-process /usr/bin/dpkg returned an error code (1)

The solution was to leave the alternative pointing at python2 during the installation of gunicorn3:

update-alternatives --install /usr/bin/python python /usr/bin/python2 2

apt-get remove --purge python-meld3 python-pkg-resources supervisor

dpkg-query -l | grep -v ^ii # confirms everything is OK

apt-get install -y gunicorn3 supervisor # this was successful

I wonder if it's better just to ignore the alternatives mechanism completely?

update-alternatives --remove python /usr/bin/python2

update-alternatives --remove python /usr/bin/python3

But for now I'll put it back to be in alignment with the netbox instructions:

update-alternatives --install /usr/bin/python python /usr/bin/python3 1

Regards,

Brian.

Brian Candler

unread,

Jun 13, 2017, 8:47:57 AM6/13/17

to NetBox

Using alternatives to point python to python3 also seems to break supervisor badly.

Jun 13 12:38:27 netbox systemd[1]: Started Supervisor process control system for UNIX.

-- Subject: Unit supervisor.service has finished start-up

-- Defined-By: systemd

-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel

--

-- Unit supervisor.service has finished starting up.

--

-- The start-up result is done.

Jun 13 12:38:27 netbox supervisord[19174]: Traceback (most recent call last):

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/bin/supervisord", line 5, in <module>

Jun 13 12:38:27 netbox supervisord[19174]: from pkg_resources import load_entry_point

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/lib/python3/dist-packages/pkg_resources/__

Jun 13 12:38:27 netbox supervisord[19174]: @_call_aside

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/lib/python3/dist-packages/pkg_resources/__

Jun 13 12:38:27 netbox supervisord[19174]: f(*args, **kwargs)

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/lib/python3/dist-packages/pkg_resources/__

Jun 13 12:38:27 netbox supervisord[19174]: working_set = WorkingSet._build_master()

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/lib/python3/dist-packages/pkg_resources/__

Jun 13 12:38:27 netbox supervisord[19174]: ws.require(__requires__)

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/lib/python3/dist-packages/pkg_resources/__

Jun 13 12:38:27 netbox supervisord[19174]: needed = self.resolve(parse_requirements(requiremen

Jun 13 12:38:27 netbox supervisord[19174]: File "/usr/lib/python3/dist-packages/pkg_resources/__

Jun 13 12:38:27 netbox supervisord[19174]: raise DistributionNotFound(req, requirers)

Jun 13 12:38:27 netbox supervisord[19174]: pkg_resources.DistributionNotFound: The 'supervisor==3.

Jun 13 12:38:27 netbox systemd[1]: supervisor.service: Main process exited, code=exited, status=1/

Jun 13 12:38:27 netbox supervisorctl[19177]: Traceback (most recent call last):

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/bin/supervisorctl", line 5, in <module>

Jun 13 12:38:27 netbox supervisorctl[19177]: from pkg_resources import load_entry_point

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/lib/python3/dist-packages/pkg_resources/

Jun 13 12:38:27 netbox supervisorctl[19177]: @_call_aside

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/lib/python3/dist-packages/pkg_resources/

Jun 13 12:38:27 netbox supervisorctl[19177]: f(*args, **kwargs)

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/lib/python3/dist-packages/pkg_resources/

Jun 13 12:38:27 netbox supervisorctl[19177]: working_set = WorkingSet._build_master()

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/lib/python3/dist-packages/pkg_resources/

Jun 13 12:38:27 netbox supervisorctl[19177]: ws.require(__requires__)

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/lib/python3/dist-packages/pkg_resources/

Jun 13 12:38:27 netbox supervisorctl[19177]: needed = self.resolve(parse_requirements(requirem

Jun 13 12:38:27 netbox supervisorctl[19177]: File "/usr/lib/python3/dist-packages/pkg_resources/

Jun 13 12:38:27 netbox supervisorctl[19177]: raise DistributionNotFound(req, requirers)

Jun 13 12:38:27 netbox supervisorctl[19177]: pkg_resources.DistributionNotFound: The 'supervisor==

Jun 13 12:38:27 netbox systemd[1]: supervisor.service: Control process exited, code=exited status=

Jun 13 12:38:27 netbox systemd[1]: supervisor.service: Unit entered failed state.

Jun 13 12:38:27 netbox systemd[1]: supervisor.service: Failed with result 'exit-code'.

And again things are horribly broken:

# apt-get remove supervisor

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following packages were automatically installed and are no longer required:

python-meld3 python-pkg-resources

Use 'sudo apt autoremove' to remove them.

The following packages will be REMOVED:

supervisor

0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.

After this operation, 1,399 kB disk space will be freed.

Do you want to continue? [Y/n] y

(Reading database ... 103207 files and directories currently installed.)

Removing supervisor (3.2.0-2ubuntu0.1) ...

/var/lib/dpkg/info/supervisor.prerm: 11: /var/lib/dpkg/info/supervisor.prerm: pyclean: not found

dpkg: error processing package supervisor (--remove):

subprocess installed pre-removal script returned error exit status 127

E: Sub-process /usr/bin/dpkg returned an error code (1)

root@netbox:/opt/netbox/netbox# which pyclean

/usr/bin/pyclean

root@netbox:/opt/netbox/netbox# /usr/bin/pyclean

bash: /usr/bin/pyclean: /usr/bin/python: bad interpreter: No such file or directory

I wish I had never touched update-alternatives :-( It seems a number of files have /usr/bin/python as hard-coded path. The only way I can make it work is to make python point to python2:

update-alternatives --install /usr/bin/python python /usr/bin/python2 2

Finally I made it work, although I also had to change gunicorn to gunicorn3 in both /etc/supervisor/conf.d/netbox.conf and /opt/netbox/gunicorn_config.py

Frank P.

unread,

Jun 13, 2017, 1:33:54 PM6/13/17

to NetBox

I ran into the exact same thing on my first install. I ended up blowing the entire VM away and starting again from scratch because I couldn't unbreak it. I just assumed I had fat-fingered something. In the end, I ended up just not installing Python3 and I didn't have any problems after that.

Keenan Tims

unread,

Jun 13, 2017, 5:24:27 PM6/13/17

to netbox-...@googlegroups.com

Yeah, the documentation should *definitely* not be recommending to
replace /usr/bin/python with /usr/bin/python3. This is a
distribution-level decision, and Debian/Ubuntu have for now chosen to
keep Python 2 as the default, as recommended by PEP 394[1]. Probably
shouldn't be doing this on RedHat either . It will definitely break
lots of things. If NetBox intends to only support Python 3, then it
should be updated to use the `python3` command. If both Pythons are
supported, the installation docs should just be based on the default
Python on that distribution. If users want to run it under Python3 on
such distributions, they can use virtualenv or install the stuff
manually with pip3.

[1] https://www.python.org/dev/peps/pep-0394/

Keenan

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Terry McKenna

unread,

Jun 14, 2017, 4:07:00 PM6/14/17

to NetBox

Yup. I had to roll back to my snapshot. "Internal Server Error" after upgrading.

On Tuesday, June 13, 2017 at 8:25:18 AM UTC-4, Brian Candler wrote:

Brian Candler

unread,

Jun 14, 2017, 6:12:59 PM6/14/17

to NetBox

> Yeah, the documentation should *definitely* not be recommending to replace /usr/bin/python with /usr/bin/python3.

Just to confirm this, I did the following test with a fresh ubuntu 16.04 lxd container. It had python3 installed by default. All I did was set python to python3 as the netbox documentation recommends, and then install supervisor (which uses python2).

root@test:~# update-alternatives --install /usr/bin/python python /usr/bin/python3 1

update-alternatives: using /usr/bin/python3 to provide /usr/bin/python (python) in auto mode

root@test:~# apt-get install supervisor

Reading package lists... Done

Building dependency tree

Reading state information... Done

The following additional packages will be installed:

libpython-stdlib libpython2.7-minimal libpython2.7-stdlib python python-meld3 python-minimal

python-pkg-resources python2.7 python2.7-minimal

Suggested packages:

python-doc python-tk python-setuptools python2.7-doc binutils binfmt-support supervisor-doc

The following NEW packages will be installed:

libpython-stdlib libpython2.7-minimal libpython2.7-stdlib python python-meld3 python-minimal

python-pkg-resources python2.7 python2.7-minimal supervisor

0 upgraded, 10 newly installed, 0 to remove and 84 not upgraded.

Need to get 4307 kB of archives.

After this operation, 18.6 MB of additional disk space will be used.

Do you want to continue? [Y/n] y

Get:1 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libpython2.7-minimal amd64 2.7.12-1ubuntu0~16.04.1 [339 kB]

Get:2 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 python2.7-minimal amd64 2.7.12-1ubuntu0~16.04.1 [1295 kB]

Get:3 http://archive.ubuntu.com/ubuntu xenial/main amd64 python-minimal amd64 2.7.11-1 [28.2 kB]

Get:4 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 libpython2.7-stdlib amd64 2.7.12-1ubuntu0~16.04.1 [1884 kB]

Get:5 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 python2.7 amd64 2.7.12-1ubuntu0~16.04.1 [224 kB]

Get:6 http://archive.ubuntu.com/ubuntu xenial/main amd64 libpython-stdlib amd64 2.7.11-1 [7656 B]

Get:7 http://archive.ubuntu.com/ubuntu xenial/main amd64 python amd64 2.7.11-1 [137 kB]

Get:8 http://archive.ubuntu.com/ubuntu xenial/main amd64 python-pkg-resources all 20.7.0-1 [108 kB]

Get:9 http://archive.ubuntu.com/ubuntu xenial/universe amd64 python-meld3 all 1.0.2-2 [30.9 kB]

Get:10 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 supervisor all 3.2.0-2ubuntu0.1 [253 kB]

Fetched 4307 kB in 4s (868 kB/s)

Selecting previously unselected package libpython2.7-minimal:amd64.

(Reading database ... 25469 files and directories currently installed.)

Preparing to unpack .../libpython2.7-minimal_2.7.12-1ubuntu0~16.04.1_amd64.deb ...

Unpacking libpython2.7-minimal:amd64 (2.7.12-1ubuntu0~16.04.1) ...

Selecting previously unselected package python2.7-minimal.

Preparing to unpack .../python2.7-minimal_2.7.12-1ubuntu0~16.04.1_amd64.deb ...

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Unpacking python-minimal (2.7.11-1) ...

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Preparing to unpack .../libpython2.7-stdlib_2.7.12-1ubuntu0~16.04.1_amd64.deb ...

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Preparing to unpack .../python2.7_2.7.12-1ubuntu0~16.04.1_amd64.deb ...

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Processing triggers for man-db (2.7.5-1) ...

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Setting up libpython2.7-minimal:amd64 (2.7.12-1ubuntu0~16.04.1) ...

Setting up python2.7-minimal (2.7.12-1ubuntu0~16.04.1) ...

Linking and byte-compiling packages for runtime python2.7...

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Selecting previously unselected package python.

(Reading database ... 26215 files and directories currently installed.)

Preparing to unpack .../python_2.7.11-1_amd64.deb ...

update-alternatives: warning: forcing reinstallation of alternative /usr/bin/python3 because link group python is broken

Unpacking python (2.7.11-1) ...

Selecting previously unselected package python-pkg-resources.

Preparing to unpack .../python-pkg-resources_20.7.0-1_all.deb ...

Unpacking python-pkg-resources (20.7.0-1) ...

Selecting previously unselected package python-meld3.

Preparing to unpack .../python-meld3_1.0.2-2_all.deb ...

Unpacking python-meld3 (1.0.2-2) ...

Selecting previously unselected package supervisor.

Preparing to unpack .../supervisor_3.2.0-2ubuntu0.1_all.deb ...

Unpacking supervisor (3.2.0-2ubuntu0.1) ...

Processing triggers for man-db (2.7.5-1) ...

Processing triggers for systemd (229-4ubuntu16) ...

Processing triggers for ureadahead (0.100.0-19) ...

Setting up libpython2.7-stdlib:amd64 (2.7.12-1ubuntu0~16.04.1) ...

Setting up python2.7 (2.7.12-1ubuntu0~16.04.1) ...

Setting up libpython-stdlib:amd64 (2.7.11-1) ...

Setting up python (2.7.11-1) ...

Setting up python-pkg-resources (20.7.0-1) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-pkg-resources (--configure):

subprocess installed post-installation script returned error exit status 1

Setting up python-meld3 (1.0.2-2) ...

Traceback (most recent call last):

File "/usr/bin/pycompile", line 35, in <module>

from debpython.version import SUPPORTED, debsorted, vrepr, \

File "/usr/share/python/debpython/version.py", line 24, in <module>

from ConfigParser import SafeConfigParser

ImportError: No module named 'ConfigParser'

dpkg: error processing package python-meld3 (--configure):

subprocess installed post-installation script returned error exit status 1

dpkg: dependency problems prevent configuration of supervisor:

supervisor depends on python-meld3; however:

Package python-meld3 is not configured yet.

supervisor depends on python-pkg-resources; however:

Package python-pkg-resources is not configured yet.

dpkg: error processing package supervisor (--configure):

dependency problems - leaving unconfigured

No apport report written because the error message indicates its a followup error from a previous failure.

Errors were encountered while processing:

python-pkg-resources

python-meld3

supervisor

E: Sub-process /usr/bin/dpkg returned an error code (1)

root@test:~#

Matthew Read

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Jun 26, 2017, 7:36:42 AM6/26/17

to NetBox

Tried installing Netbox last week on fresh Ubuntu Server 16.04.1 VM with Python 3 and just could not get it to work. After coming to this thread I tried using update-alternatives to point python at python3. With this I managed to get gunicorn3 working when running it by hand but horribly braking supervisor in the process. Ended up just deleting the VM and starting from scratch, this time making sure to never use python3, and everything works now.

Eric

unread,

May 17, 2018, 1:37:38 PM5/17/18

to NetBox

Installing gunicorn3 instead of gunicorn fixed my issues with running gunicorn

On Tuesday, June 13, 2017 at 8:25:18 AM UTC-4, Brian Candler wrote:

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