Search notes:

nginx

Installing

$ sudo apt install -y nginx

Check if nginx is running:

$ systemctl status nginx
$ sudo ss -plntu | grep nginx

$ sudo systemctl start nginx

$ sudo systemctl stop nginx

$ sudo systemctl restart nginx

Without systemd?

# /usr/sbin/nginx -s stop

# systemctl status nginx

Check if configuration is ok and only then restart server:

$ sudo nginx -t && sudo nginx -s reload

$ apt show python3-certbot-nginx 2>/dev/null | grep Description
Description: Nginx plugin for Certbot