If you set localhost as a resolver in the nginx settings, will it be possible to resolve through /etc/hosts?

Question

Nginx

If you set the resolver to 127.0.0.1 in the nginx settings, will it be possible to resolve through /etc/hosts, or do you need to raise the DNS server?

Answer 1

If you want to use /etc/hosts, no special settings are needed. If the application does not have its own resolver and makes a request to the OS, then the OS looks there first of all.
I'm not sure if nginx has its own resolver, but if you tell it to use 127.0.0.1 as the DNS server, then it will knock on port 53 there, and, obviously, someone should listen and respond to requests on this port.
UPD: Yes, indeed there is a resolver directive, for its execution it is necessary to raise the DNS server.