What simple web servers do you know for testing the balancer?

Question

Load balancing

We need a server under Linux that would randomly display information about the request and about its instance (hostname, url, ip) or an error. Preferably without external dependencies (for example, node.js) and with a simple config

If there is nothing like this out of the box, please write how to do it in Python, nginx, bash or something else to compare which is easier. Perhaps there is test software designed for this. Which?

Answer 1

For example, a simple bash server that returns the server ip for any request

body=$(hostname -I)
while true
  do printf 'HTTP/1.0 200 OK\r\nContent-Length: %d\r\n\r\n%s' "${#body}" "${body}\r\n" | nc -l 8080
done

Judging by the activity of the respondents, it was necessary to put the question on the "Difficult" level