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I cannot get environment variable from apache

ma flag
Pozinux

On a Centos 8, I added a SetEnv into my VirtualHost conf:

<VirtualHost *:XXXX>
    Alias /static/ /opt/industrialisation/xxxx/xxxx/xxxx/
    <Directory /opt/industrialisation/xxx/xxxx/>
        Require all granted
        <Files wsgi.py>
            Require all granted
        </Files>
    </Directory>
    WSGIDaemonProcess myproject python-home=/opt/venv/venv-xxxxx python-path=/opt/industrialisation/xxxx/xxxxx/
    WSGIProcessGroup myproject
    WSGIScriptAlias / /opt/industrialisation/xxxx/xxxx/xxxxx/wsgi.py
    SetEnv VARIABLE_NAME variable_value
</VirtualHost>

I stop and start httpd service :

[root@xxxxx ~]# systemctl stop httpd.service
[root@xxxxx ~]# systemctl start httpd.service

The service is running well :

[root@xxxxxxx ~]# systemctl status httpd.service
● httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
  Drop-In: /usr/lib/systemd/system/httpd.service.d
           └─php-fpm.conf
   Active: active (running) since Mon 2023-03-06 21:57:56 CET; 5min ago
     Docs: man:httpd.service(8)
 Main PID: 49075 (httpd)
   Status: "Total requests: 1; Idle/Busy workers 100/0;Requests/sec: 0.00313; Bytes served/sec:  19 B/sec"
    Tasks: 231 (limit: 22084)
   Memory: 43.4M
   CGroup: /system.slice/httpd.service
           ├─49075 /usr/sbin/httpd -DFOREGROUND
           ├─49076 /usr/sbin/httpd -DFOREGROUND
           ├─49077 /usr/sbin/httpd -DFOREGROUND
           ├─49078 /usr/sbin/httpd -DFOREGROUND
           ├─49079 /usr/sbin/httpd -DFOREGROUND
           └─49080 /usr/sbin/httpd -DFOREGROUND

mars 06 21:57:56 xxxxxxx.xxxxxxx.net systemd[1]: Starting The Apache HTTP Server...
mars 06 21:57:56 xxxxxxx.xxxxxxx.net systemd[1]: Started The Apache HTTP Server.
mars 06 21:57:56 xxxxxxx.xxxxxxx.net httpd[49075]: Server configured, listening on: port xxx, port xxxx, port xxxx

I check if the variable is available but it is not :

[root@xxxxxxx ~]# cat /proc/49075/environ | tr '\0' '\n'
LANG=C
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
NOTIFY_SOCKET=/run/systemd/notify
INVOCATION_ID=a3e117c7287b445b9b9932f7ec8883b1
JOURNAL_STREAM=9:220753

Also I thought that system variable (like HOSTNAME) would be available to the process httpd but I only see these 5 variables.

Is it normal? Is it a problem with my check from proc? I'm confused.

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ezra-s avatar
ru flag
ezra-s
SetEnv sets variable for Apache own use, SetEnv does not set system variables. All you can do with system variables is preload them before running httpd and invoke them in your httpd config, not the other way around. The httpd docs specify it clearly. [mod_env](https://httpd.apache.org/docs/2.4/mod/mod_env.html) "This module allows for control of internal environment variables that are used by various Apache HTTP Server modules"
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Pozinux avatar
ma flag
Pozinux
Thanks so much for your answer.
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