add proxy or environment variable in systemd daemons

If you watn to add a proxy to systemd to all daemon use it you can add a additional config on dot d files ! 

Make a directory in /etc/systemd/system.conf.d/ and add a file environment.conf or oany name you want to have. 

add below content :

[Manager]

DefaultEnvironment=HTTP_PROXY=http://http://172.30.220.5:8080

DefaultEnvironment=HTTPS_PROXY=http://172.30.220.5:8080

DefaultEnvironment=NO_PROXY=localhost,127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,example.com

its just an example for porxy and port, you should add yours in your server

now reload daemons config and restart if you want a service use this config immediately

systemctl daemon-reload