That symlink is not pointing where you think it is, it is pointing at
"/var/www/html/hd2900TakeawayPrint”. You need to specify an absolute pathname
for the target when creating the symlink. Even then that may not work as Apache
has rules about following symlinks and am not sure whether the default rules
allow it or whether you need to enable it. If not enabled, the target directory
would need a Directory directive all well to allow access to it.
A further issue is that you seem to be using a Python virtual environment but
have not told mod_wsgi to use it. And another potential problem will be whether
your home directory is accessible by other users.
Presuming that your home directory is called “/home/yourusername” and it is
accessible to others, try using:
WSGIDaemonProcess flaskapp threads=5
python-home=/home/yourusername/Documents/Python/hd2900TakeawayPrint/env
WSGIScriptAlias /
/home/yourusername/Documents/Python/hd2900TakeawayPrint/flaskapp.wsgi
WSGIApplicationGroup %{GLOBAL}
<Directory /home/yourusername/Documents/Python/hd2900TakeawayPrint>
WSGIProcessGroup flaskapp
Require all granted
</Directory>
Have a read of:
*
https://modwsgi.readthedocs.io/en/master/user-guides/quick-configuration-guide.html
<https://modwsgi.readthedocs.io/en/master/user-guides/quick-configuration-guide.html>
*
https://modwsgi.readthedocs.io/en/master/user-guides/configuration-guidelines.html
<https://modwsgi.readthedocs.io/en/master/user-guides/configuration-guidelines.html>
*
https://modwsgi.readthedocs.io/en/master/user-guides/virtual-environments.html
<https://modwsgi.readthedocs.io/en/master/user-guides/virtual-environments.html>
Graham
> On 12 Oct 2021, at 7:54 am, Jian Wu <[email protected]> wrote:
>
> Hello Graham,
>
> Sorry I missed the argument in Directory. I have now changed the
> configuration file as below.
>
> (env) hd2900@hd2900:~/Documents/Python/hd2900TakeawayPrint$ cat
> /etc/apache2/sites-enabled/000-default.conf
> <VirtualHost *:80>
> # The ServerName directive sets the request scheme, hostname and port
> that
> # the server uses to identify itself. This is used when creating
> # redirection URLs. In the context of virtual hosts, the ServerName
> # specifies what hostname must appear in the request's Host: header to
> # match this virtual host. For the default virtual host (this file) this
> # value is not decisive as it is used as a last resort host regardless.
> # However, you must set it for any further virtual host explicitly.
> #ServerName www.example.com <http://www.example.com/>
>
> ServerAdmin webmaster@localhost
> DocumentRoot /var/www/html
> WSGIDaemonProcess flaskapp threads=5
> WSGIScriptAlias / /var/www/html/flaskapp/flaskapp.wsgi
> WSGIApplicationGroup %{GLOBAL}
>
> <Directory /var/www/html/flaskapp>
> WSGIProcessGroup flaskapp
> Require all granted
> </Directory>
>
> # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
> # error, crit, alert, emerg.
> # It is also possible to configure the loglevel for particular
> # modules, e.g.
> #LogLevel info ssl:warn
>
> ErrorLog ${APACHE_LOG_DIR}/error.log
> CustomLog ${APACHE_LOG_DIR}/access.log combined
>
> # For most configuration files from conf-available/, which are
> # enabled or disabled at a global level, it is possible to
> # include a line for only one particular virtual host. For example the
> # following line enables the CGI configuration for this host only
> # after it has been globally disabled with "a2disconf".
> #Include conf-available/serve-cgi-bin.conf
> #Header set Access-Control-Allow-Origin "*"
> </VirtualHost>
>
> Furthermore I have ensured that the dynamic link is created as seen below in
> the path /var/www/html
>
> (env) hd2900@hd2900:/var/www/html$ ll
> total 20
> drwxr-xr-x 2 root root 4096 Oct 10 18:38 ./
> drwxr-xr-x 3 root root 4096 Sep 26 21:54 ../
> lrwxrwxrwx 1 root root 19 Oct 10 18:38 flaskapp -> hd2900TakeawayPrint
> -rw-r--r-- 1 root root 10918 Sep 26 21:54 index.html
>
> In the hd2900TakeawayPrint folder the flasapp.wsgi is located
>
> (env) hd2900@hd2900:~/Documents/Python/hd2900TakeawayPrint$ ll -la
> total 32
> drwxrwxr-x 4 hd2900 www-data 4096 Oct 10 18:23 ./
> drwxrwxr-x 3 hd2900 hd2900 4096 Oct 10 18:04 ../
> drwxrwxr-x 4 hd2900 hd2900 4096 Oct 10 18:08 env/
> -rwxrwxr-x 1 hd2900 www-data 249 Oct 10 18:23 flaskapp.py*
> -rwxrwxr-x 1 hd2900 www-data 96 Oct 10 18:23 flaskapp.wsgi*
> drwxrwxr-x 8 hd2900 hd2900 4096 Oct 10 18:23 .git/
> -rw-r--r-- 1 root root 5 Oct 10 18:05 .gitignore
> -rwxrwxr-x 1 hd2900 hd2900 69 Oct 10 18:04 README.md*
>
> Still when I from a browser type https://my-global-IP:81
> <https://myglobalip:81/> I get the permission error.
>
> Best regards,
> Jian
>
>
>
>> Den 11. okt. 2021 kl. 22.37 skrev Graham Dumpleton
>> <[email protected] <mailto:[email protected]>>:
>>
>> You didn’t use exactly what I gave you. The argument to the Directory
>> directive needs to be the path to the directory holding the WSGI script
>> file, not the name of the mod_wsgi daemon process group.
>>
>> <Directory /var/www/html/flaskapp>
>> WSGIProcessGroup flaskapp
>> Require all granted
>> </Directory>
>>
>> Graham
>>
>>> On 12 Oct 2021, at 4:19 am, Jian Wu <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> Hello Graham,
>>>
>>> Thanks for pointing this out. I have now corrected it so the configuration
>>> file looks as below. The problem however still persists.
>>>
>>> cat /etc/apache2/sites-enabled/000-default.conf
>>> <VirtualHost *:80>
>>> # The ServerName directive sets the request scheme, hostname and port
>>> that
>>> # the server uses to identify itself. This is used when creating
>>> # redirection URLs. In the context of virtual hosts, the ServerName
>>> # specifies what hostname must appear in the request's Host: header to
>>> # match this virtual host. For the default virtual host (this file) this
>>> # value is not decisive as it is used as a last resort host regardless.
>>> # However, you must set it for any further virtual host explicitly.
>>> #ServerName www.example.com <http://www.example.com/>
>>>
>>> ServerAdmin webmaster@localhost
>>> DocumentRoot /var/www/html
>>> WSGIDaemonProcess flaskapp threads=5
>>> WSGIScriptAlias / /var/www/html/flaskapp/flaskapp.wsgi
>>> WSGIApplicationGroup %{GLOBAL}
>>>
>>> <Directory flaskapp>
>>> WSGIProcessGroup flaskapp
>>> Require all granted
>>> </Directory>
>>>
>>> # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
>>> # error, crit, alert, emerg.
>>> # It is also possible to configure the loglevel for particular
>>> # modules, e.g.
>>> #LogLevel info ssl:warn
>>>
>>> ErrorLog ${APACHE_LOG_DIR}/error.log
>>> CustomLog ${APACHE_LOG_DIR}/access.log combined
>>>
>>> # For most configuration files from conf-available/, which are
>>> # enabled or disabled at a global level, it is possible to
>>> # include a line for only one particular virtual host. For example the
>>> # following line enables the CGI configuration for this host only
>>> # after it has been globally disabled with "a2disconf".
>>> #Include conf-available/serve-cgi-bin.conf
>>> #Header set Access-Control-Allow-Origin "*"
>>> </VirtualHost>
>>>
>>> Best regards,
>>> Jian
>>>
>>>> Den 10. okt. 2021 kl. 23.23 skrev Graham Dumpleton
>>>> <[email protected] <mailto:[email protected]>>:
>>>>
>>>> For a start, this is wrong:
>>>>
>>>> <Directory flaskapp>
>>>> WSGIProcessGroup flaskapp
>>>> WSGIApplicationGroup %{GLOBAL}
>>>> Order deny,allow
>>>> Allow from all
>>>> </Directory>
>>>>
>>>> It should be:
>>>>
>>>> <Directory /var/www/html/flaskapp>
>>>> WSGIProcessGroup flaskapp
>>>> Require all granted
>>>> </Directory>
>>>>
>>>> Graham
>>>>
>>>>> On 11 Oct 2021, at 7:09 am, Jian Wu <[email protected]
>>>>> <mailto:[email protected]>> wrote:
>>>>>
>>>>> Dear Graham,
>>>>>
>>>>>
>>>>> I am following this guide
>>>>> https://asdkazmi.medium.com/deploying-flask-app-with-wsgi-and-apache-server-on-ubuntu-20-04-396607e0e40f
>>>>>
>>>>> <https://asdkazmi.medium.com/deploying-flask-app-with-wsgi-and-apache-server-on-ubuntu-20-04-396607e0e40f>
>>>>> to deploy a flask app together with apache2 and mod-wsgi. My intension
>>>>> is being able to perform a request post call from another server over the
>>>>> internet to my server running flask.
>>>>>
>>>>> It seems that the author suggests to install mod-wsgi using the below
>>>>> command. I am not sure if that package is supported?
>>>>>
>>>>> sudo apt-get install libapache2-mod-wsgi-py3
>>>>>
>>>>> I followed the instruction, and when I typed in my local IP address on a
>>>>> browser I received a message saying “Forbidden you don’t have the
>>>>> permission to access this ressource Apache 2.4.46 (Ubuntu server at
>>>>> 192.168.0.179 port 80).
>>>>>
>>>>> Hardware:
>>>>> - Raspberry Pi 4 with Ubuntu 20.04. My local IP is 192.168.0.179
>>>>> - Router configuration: As seen in the picture below, I have forwarded
>>>>> port 22 external to internal 22 and external port 81 to internal port 80.
>>>>> <Indsat grafik-1.tiff>
>>>>>
>>>>> These ports are opened on my Ubuntu server
>>>>> (env) hd2900@hd2900:/etc/apache2/sites-available$ sudo ufw status
>>>>> [sudo] password for hd2900:
>>>>> Status: active
>>>>>
>>>>> To Action From
>>>>> -- ------ ----
>>>>> 22/tcp ALLOW Anywhere
>>>>> OpenSSH ALLOW Anywhere
>>>>> Apache Full ALLOW Anywhere
>>>>> 81/tcp ALLOW Anywhere
>>>>> 22/tcp (v6) ALLOW Anywhere (v6)
>>>>> OpenSSH (v6) ALLOW Anywhere (v6)
>>>>> Apache Full (v6) ALLOW Anywhere (v6)
>>>>> 81/tcp (v6) ALLOW Anywhere (v6)
>>>>>
>>>>> My Apache2 configuration file:
>>>>> (env) hd2900@hd2900:~/Documents/Python/hd2900TakeawayPrint$ cat
>>>>> /etc/apache2/sites-enabled/000-default.conf
>>>>> <VirtualHost *:80>
>>>>> # The ServerName directive sets the request scheme, hostname and port
>>>>> that
>>>>> # the server uses to identify itself. This is used when creating
>>>>> # redirection URLs. In the context of virtual hosts, the ServerName
>>>>> # specifies what hostname must appear in the request's Host: header to
>>>>> # match this virtual host. For the default virtual host (this file) this
>>>>> # value is not decisive as it is used as a last resort host regardless.
>>>>> # However, you must set it for any further virtual host explicitly.
>>>>> #ServerName www.example.com <http://www.example.com/>
>>>>>
>>>>> ServerAdmin webmaster@localhost
>>>>> DocumentRoot /var/www/html
>>>>> WSGIDaemonProcess flaskapp threads=5
>>>>> WSGIScriptAlias / /var/www/html/flaskapp/flaskapp.wsgi
>>>>> WSGIApplicationGroup %{GLOBAL}
>>>>>
>>>>> <Directory flaskapp>
>>>>> WSGIProcessGroup flaskapp
>>>>> WSGIApplicationGroup %{GLOBAL}
>>>>> Order deny,allow
>>>>> Allow from all
>>>>> </Directory>
>>>>>
>>>>> # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
>>>>> # error, crit, alert, emerg.
>>>>> # It is also possible to configure the loglevel for particular
>>>>> # modules, e.g.
>>>>> #LogLevel info ssl:warn
>>>>>
>>>>> ErrorLog ${APACHE_LOG_DIR}/error.log
>>>>> CustomLog ${APACHE_LOG_DIR}/access.log combined
>>>>>
>>>>> # For most configuration files from conf-available/, which are
>>>>> # enabled or disabled at a global level, it is possible to
>>>>> # include a line for only one particular virtual host. For example the
>>>>> # following line enables the CGI configuration for this host only
>>>>> # after it has been globally disabled with "a2disconf".
>>>>> #Include conf-available/serve-cgi-bin.conf
>>>>> #Header set Access-Control-Allow-Origin "*"
>>>>> </VirtualHost>
>>>>>
>>>>> # vim: syntax=apache ts=4 sw=4 sts=4 sr noet
>>>>>
>>>>>
>>>>> My Flask app folder structure:
>>>>> (env) hd2900@hd2900:~/Documents/Python/hd2900TakeawayPrint$ ls -la
>>>>> total 32
>>>>> drwxrwxr-x 4 hd2900 hd2900 4096 Oct 10 18:23 .
>>>>> drwxrwxr-x 3 hd2900 hd2900 4096 Oct 10 18:04 ..
>>>>> drwxrwxr-x 4 hd2900 hd2900 4096 Oct 10 18:08 env
>>>>> -rw-rw-r-- 1 hd2900 hd2900 249 Oct 10 18:23 flaskapp.py
>>>>> -rw-rw-r-- 1 hd2900 hd2900 96 Oct 10 18:23 flaskapp.wsgi
>>>>> drwxrwxr-x 8 hd2900 hd2900 4096 Oct 10 18:23 .git
>>>>> -rw-r--r-- 1 root root 5 Oct 10 18:05 .gitignore
>>>>> -rw-rw-r-- 1 hd2900 hd2900 69 Oct 10 18:04 README.md
>>>>>
>>>>> flaskapp.wsgi content
>>>>> cat flaskapp.wsgi
>>>>> import sys
>>>>> sys.path.insert(0, '/var/www/html/flaskapp')
>>>>>
>>>>> Flaskapp.py content
>>>>> cat flaskapp.py
>>>>> # flaskapp.py
>>>>> # This is a "hello world" app sample for flask app. You may have a
>>>>> different file.
>>>>> from flask import Flask
>>>>> app = Flask(__name__)
>>>>> @app.route('/')
>>>>> def hello_world():
>>>>> return 'Hello from Flask!'
>>>>> if __name__ == '__main__':
>>>>>
>>>>> I don’t know how to troubleshoot this problem further, and I hope for
>>>>> your advice.
>>>>>
>>>>> Thanks in advance!
>>>>>
>>>>> Best regards,
>>>>> Jian
>>>>>
>>>>> --
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>>>>> email to [email protected]
>>>>> <mailto:[email protected]>.
>>>>> To view this discussion on the web visit
>>>>> https://groups.google.com/d/msgid/modwsgi/2BCCBE0B-7ECB-462D-998D-B0048679D76B%40gmail.com
>>>>>
>>>>> <https://groups.google.com/d/msgid/modwsgi/2BCCBE0B-7ECB-462D-998D-B0048679D76B%40gmail.com?utm_medium=email&utm_source=footer>.
>>>>
>>>>
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>>>>
>>>> <https://groups.google.com/d/msgid/modwsgi/DA44D477-D5A6-4843-94BD-D2934DB8F9FE%40gmail.com?utm_medium=email&utm_source=footer>.
>>>
>>>
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>>
>>
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