Quiz: nginx

Read the output

Where do you look for the cause of this answer?

$ systemctl is-active lab-shop
active
$ curl -sI http://shop.lab.test/
HTTP/1.1 502 Bad Gateway
Server: nginx/1.24.0 (Ubuntu)

• A In the curl -v output.
• B In /etc/hosts.
• C In the lab-shop application's log.
• D In /var/log/nginx/error.log, in a line with the words while connecting to upstream.