I cannot get environment variable from apache

Question

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.