[Flask] Deploying as a Windows service

[CCP Dragonedge]

Sorry, it should be mod_wsgi 4.6.4, not 4.5.4
p

On 6 August 2018 at 10:27, CCP Dragonedge <ccp at drsb.com.my> wrote:

> Hi Unai,
>
> Thanks for taking the time.
>
> With regards to (1), I didn't see anything more meaningful. Inside my
> myapp.py, I do a "from module wfADM import wfUser". It just says it
> couldn't find module wfADM.
>
> As for (2), before I installed mod_wsgi, I did test it out as a Windows
> service on a simple html file - no problems.
>
> This is the entire scenario (sorry in advance for this long post):
>
> Initially, I had Python 2.7, Flask, and MySQL 8 running on a Windows 7
> box. This wasn't my development machine, it was going to be production, but
> I just wanted to make sure that everything worked, as I had never worked
> with Apache before. Then, I installed Apache 2.4 - pleasantly surprised
> that it was really easy. No problem as a Windows service, either (i.e.
> httpd -k install, then going into Services and starting it up).
>
> So, apart from Apache, my production and development machines were
> basically identical. Therefore, I tried to install mod_wsgi on my
> DEVELOPMENT machine - and ran into all sorts of pain. After a very helpful
> exchange with the mod_wsgi boss, Graham Dumpleton, on Github (#347), my
> conclusion was that I had to use Python 3.6. After doing that (the only
> real change I had to make was changing MySQLdb to pymsql), I then managed
> to install mod_wsgi 4.5.4 (after much effort - I finally realized I had to
> install the latest Visual C++ compilers from Microsoft). Then, everything
> worked fine (now that I think of it, I didn't try to set up Apache as a
> Windows service on my development machine - I'll give that a shot when I
> have a bit more time).
>
> Regardless, I basically did this on my PRODUCTION environment based on my
> experience on my development box:
>
> 0) Apache24 and MySQL 8 already installed, so I just left them
> 1) Uninstalled Python 2.7, which also gets rid of Flask
> 2) Installed Python 3.6
> 3) Installed Flask
>    - tested my application on the Flask server; worked without any problems
> 4) Installed mod_wsgi
>    - had to install the Visual C++ compilers, but after that, no issues
> 5) Set up the virtual host and the wsgi file, which leads to....
>
> Current situation:
> When I manually start up Apache by just typing httpd.exe on the command
> line, no problems accessing my Flask app from Apache. But when I try to set
> up Apache as a Windows service (httpd -k install, and then going to
> Services), I get the problem above (unable to see my modules).
>
> Thanks for taking the time to read this!
> p
>
> On 6 August 2018 at 02:10, Unai Rodriguez <unai at sysbible.org> wrote:
>
>> Hi,
>>
>> (1) Is there any more specific error on Apache error logs?
>>
>> (2) I’d make sure first Apache starts properly as a service. Can you test
>> something else (perhaps a simple html page)  to make the Apache service is
>> configured properly?
>>
>> (3) If getting (1) and (2) did not help enough for you to figure it out,
>> please submit exact steps on how yo configured Apache to start as a service
>> and the Apache configuration for your Flask app
>>
>> Thanks,
>> Unai Rodriguez
>> On 5 Aug 2018, 14:31 +0200, CCP Dragonedge <ccp at drsb.com.my>, wrote:
>>
>> Hi,
>>
>> I am deploying my Flask application on Apache24 using mod_wsgi 4.5.4
>> running on a Windows 7 machine. I have encountered something strange - when
>> I start and stop Apache manually (i.e. by typing httpd.exe from the command
>> line to start, and just hitting ctrl-C to stop), everything works fine.
>>
>> When I, however, install Apache as a Windows service (by doing a "httpd
>> -k install"; so it starts up when the machine is booted), I get a "500
>> internal server error" when I try to access my Flask application.
>>
>> According to the error logs, Flask can't see my modules. I know it's
>> something to do with Apache because when I just run the Flask server
>> ("python myapp.py"), I have no problems.
>>
>> Anyone experience this? If so, how did you overcome this? And I hope this
>> isn't off-topic - if it is, sorry and please point me to the right place.
>>
>> Thanks,
>> p
>> _______________________________________________
>> Flask mailing list
>> Flask at python.org
>> https://mail.python.org/mailman/listinfo/flask
>>
>>
>
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