How to config http redirect to https

Go to the /etc/nginx directory and edit nginx.conf file:

cd /etc/nginx/
vi nginx.conf

Edit the following configuration into it, just like below:

http {
        server {
        if ($host = www.example.com) {
                return 301 https://$host$request_uri;
        }
}

Save and close it.

Finally, apply configuriton:

nginx -s reload

Easy to use