App Server Environment not work

mshzsh

mshzsh

New Member
#1
#1
hi,
I tried many times to run django with virtualenv on OpenLightSpeed, but I didn't succeed and I couldn't find a solution on the Internet.
Of course, if I don't use virtualenv and install the packages on the main python system, the problem will be solved, but I need to use virtualenvs.

Everything works fine until I use the following lines :

PYTHONHOME=/usr/local/lsws/Example/venv/​
LS_PYTHONBIN=/usr/local/lsws/Example/venv/bin/python​

I have tested all the following lines in different order :

PYTHONHOME=/usr/local/lsws/Example/venv/​
----------------------------------------------------------------------------------------------------
LS_PYTHONBIN=/usr/local/lsws/Example/venv/bin/python3.8​
PYTHONHOME=/usr/local/lsws/Example/venv/​
----------------------------------------------------------------------------------------------------
PYTHONHOME=/usr/local/lsws/Example/html/venv​
PYTHONPATH=/usr/local/lsws/Example/html/venv/lib/python3.8/site-packages​
LS_PYTHONBIN=/usr/local/lsws/Example/html/venv/bin/python3.8​
----------------------------------------------------------------------------------------------------
And many other ways ...

I get this error in stderr.log:
"Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
ModuleNotFoundError: No module named 'encodings'"

Note :
(( virtualenv has no problem and works properly in the cli ))


OS : Pop!_OS 20.04 LTS (ubuntu 20.04)
Python : 3.8
OpenLiteSpeed : 1.6.13
wsgi-lsapi : 1.6
 
Cold-Egg

Cold-Egg

Administrator
#2
#2
Hi @mshzsh ,

It should works by following the KB here https://openlitespeed.org/kb/python-wsgi-applications/#Set_up_Django_with_a_Virtual_Environment

Set
Code: 
PYTHONHOME=/usr/local/lsws/Example/venv/
to environment should be good.

If you have any account with DigitalOCean, GCP, AWS..etc, you can simply launch a django + venv solution from the marketplace immediately to check the settings. https://docs.litespeedtech.com/cloud/images/django/

Also you can try the django + venv setup script on a clean server.
Code: 
### Install OpenLiteSpeed and Django
bash <( curl -sk https://raw.githubusercontent.com/litespeedtech/ls-cloud-image/master/Setup/djangosetup.sh )
### Regenerate password for Web Admin, Database, setup Welcome Message
bash <( curl -sk https://raw.githubusercontent.com/litespeedtech/ls-cloud-image/master/Cloud-init/per-instance.sh )
### Reboot server
reboot
Best,
Eric
 
mshzsh

mshzsh

New Member
#3
#3
thanks Eric,
I tested with several different VPS but I had the same problem, and of course I don't want to use cloud servers.

I have another problem that when I edit the settings.py file, the changes are applied with a delay of a few hours, even if I restart the server.
But this does not happen when editing other files
 
Cold-Egg

Cold-Egg

Administrator
#4
#4
That's fine, I just want to show you the config there works with virtual env :)
Try killing the lswsgi process after you change the settings see if it helps
Code: 
killall lswsgi
 
D

diegoa

New Member
#6
#6
Hi @mshzsh I am facing the exact same problem that you are. Were you able to proceed?

I suspect this is particular to Python 3.8, since I tried using the Django image (which has Ubuntu 18.04 and Python 3.6) and it works fine out of the box. But if I upgrade this image to Ubuntu 20.04 that has Python 3.8, the error is seen. Also if I start with a clean 20.04 and install OLS, that works fine. But once I add wsgi and django (with the same OLS config file from the image), the same error once again.

I also tried with a fresh Debian 10.4 image (Python 3.7.3) and the django install succeeded without a hitch.
 
Last edited:
metalsonic

metalsonic

New Member
#10
#10
Hi there, I've been spending a few days on this.
I am unable to use the Python Virtual Environment with OpenLiteSpeed for a Django App.

config:
CentOS 8
Python 3.8.0
OpenLiteSpeed 1.7.3
wsgi-lsapi-1.6

with OpenliteSpeed + Django + Python Virtual Environment = I get a 503 Service Unavailable.
We followed meticulously this here : https://openlitespeed.org/kb/python-wsgi-applications/

Using Virtual Environment doesn't work.
 
Cold-Egg

Cold-Egg

Administrator
#12
#12
Hi @metalsonic ,

I tested few cases and found out it works without virtualenv on CentOS, probably there's some permission or env setup issue somewhere.
Here's the script to setup django with no virtualenv on CentOS system. Feel free to give it a try on a clean server.

Code: 
wget https://raw.githubusercontent.com/litespeedtech/ls-cloud-image/master/Setup/djangosetup.sh
chmod +x djangosetup.sh; bash djangosetup.sh --no-venv

bash <( curl -sk https://raw.githubusercontent.com/litespeedtech/ls-cloud-image/master/Cloud-init/per-instance.sh )
 
metalsonic

metalsonic

New Member
#13
#13
Hi there I finally sorted it out on centOS 8.
Not 100% sure if it comes from that but after reinstalling some packages it started working correctly :

yum -y remove python38-devel
yum -y install python38-devel
(yum -y install bzip2) <the last one probably optional in most cases.

then
cd /home/project/
virtualenv myenv
source ./myenv/bin/activate

will work and activate the virtual environment correctly. Seems rather like a CentOS issue, not openlitespeed.
 
You must log in or register to reply here.
Top