Python installation

[Noam Harel]

Hi

i would like to install python and run .py scripts in httpdocs, also i have read here, that this is possible through plesk onyx.

so what would be the best practice to install python on centos 7 and make it competable with plesk onyx. detailed instruction if possible.

thank's in advance
Noam

 

[IgorG]

Just install mod_python components with

# plesk installer --select-release-current --install-component mod_python

And enable it in Service Plan Hosting Settings:

 

[Noam Harel]

thanks for your reply!

well i have done that and i saw the python support on the service plan, but still when i try to access the file, it doesn't run and the browser wants to download the file, what should i do.
you can see it at: http://cal.2016.co.il/noam.py
http://cal.2016.co.il/noam.py
Noam

 

[IgorG]

I see "Hello World"!

 

[Noam Harel]

thanks igor for a quick reply!

but this is the code itself its not the output, which means the server treats the file as a text document and not as a script!
you can see this here: http://cal.2016.co.il/test.py

 

[IgorG]

Mak sure that Python scripting engine is enabled here - Tools & Settings > Apache Web Server > check python.

 

[Noam Harel]

thanks again for the quick answer!

the python scripting engine doesn't appear at all at: Tools & Settings > Apache Web Server > python:

for further information, after donig what you have wrote in your first message (plesk installer --select-release-current --install-component mod_python) the result was:
You already have the latest version of product(s) and all the selected components
installed. Installation will not continue.
server information:
Plesk Onyx v17.0.17_build1700161028.14 os_CentOS 7

Noam

 

[IgorG]

What is output of commands:

# rpm -q mod_python
# httpd -M | grep python

 

[Noam Harel]

i see the problem now:
[root@webnext ~]# rpm -q mod_python
package mod_python is not installed

[root@webnext ~]# httpd -M | grep python
[Wed Nov 23 11:03:54.495789 2016] [so:warn] [pid 8797] AH01574: module actions_module is already loaded, skipping
[Wed Nov 23 11:03:54.498570 2016] [so:warn] [pid 8797] AH01574: module headers_module is already loaded, skipping
[Wed Nov 23 11:03:54.498890 2016] [so:warn] [pid 8797] AH01574: module logio_module is already loaded, skipping
[Wed Nov 23 11:03:54.500298 2016] [so:warn] [pid 8797] AH01574: module suexec_module is already loaded, skipping

 

[IgorG]

Strange why mod_python is not installed? Try to install it again through Tools&Settings->Update and Upgrade->etc...

 

[Noam Harel]

Hi igor

it doesn't appear there:

 

[IgorG]

Well, as I was informed, mod_python is not included to Plesk installer on modern OSes like Debian8, Centos7, Ubuntu16. My test Plesk Onyx server is based on Centos6.8 therefore I see mod_python in Plesk installer.
By default, Python is handled by FastCGI (mod_fcgid module). For Python, it is also possible to use Application server (this option is described in this article)

 

[Noam Harel]

Hi igor this sounds weird, as this manual is for plesk 12 and i am using plesk 17.
what i have done is:
1) # yum install python-pip
2) # pip install virtualenv
3) i have installed Phusion Passenger from the web installer

i am stuck here... where to go from here

Noam

 

[UFHH01]

Hi Noam Harel,

to compile and install "mod_python" on a CentOS 7 operating system, you could use:

1. Install the "Python - Developper - package" with for example:

   yum -y install python-devel

2. Go to the "LOCAL - SOURCE" folder

   cd /usr/local/src/

3. Download the Python - SOURCE - package with for example:

   wget http://dist.modpython.org/dist/mod_python-3.5.0.tgz

4. Uncompress the downloaded file with for example:

   tar xfz mod_python-3.5.0.tgz

5. Move the new folder

   cd mod_python-3.5.0

6. Before you can compile a package, you have to "CONFIGURE" it:

   ./configure

7. After a ( successfull ) configuration, you can now use:

   make

8. To finish your compilation, you would use:

   make install

9. Enable the module for your apache - webserver with for example:

   echo 'LoadModule python_module modules/mod_python.so' > /etc/httpd/conf.modules.d/000-python.conf

10. Restart your apache - webserver with for example:

    systemctl restart httpd.service

 

[Noam Harel]

Hi UFHH01

i did all your advices and when i got to configure i had this error:
[root@webnext mod_python-3.5.0]# ./configure
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/usr/local/src/mod_python-3.5.0':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details.

Noam

 

[UFHH01]

Hi Noam Harel

you can use

yum groupinstall "Development Tools"​

to install necessary package.

 

[Noam Harel]

thanks for your reply!

can you please make detailed explainations?

Noam

 

[UFHH01]

Hi Noam Harel,

if the above suggested command doesn't work for you, you are as well able to use:

yum --setopt=group_package_types=mandatory,default,optional groupinstall "Development Tools"​

or​

yum --setopt=group_package_types=mandatory,default,optional group install "Development Tools"

​

Another option to solve possible issue with "groupinstall" ( os - related ), is to use:

yum groups mark install "Development Tools"
yum groups mark convert "Development Tools"
yum groupinstall "Development Tools"

 

[IgorG]

BTW, removing mod_python and mod_perl was done for security reasons. More detail can be found here - https://kb.plesk.com/en/129477

 

[Levplesk]

Hi!
I have a similar issue.
I have centos7 plesk and I like python.
I do not want to start compiling the mod python because I tried that once and it did nothing.
What I want is to enable python via cgi.
I put in my htaccess
Options +exec
AddHandler cgi-script .py
And its not working, getting 500 error.
The permissions of my helloworld.Py are execute on everything
Is it something to do with selinux?
The same thing works on a pleskless environment.