Set basic auth on homepage only nginx - nginx

Question

I have below configuration. I only want to authorize / because the only one that has a UI. Other URLs are already apis like /report/, /group/, /delete/ and so on.
upstream gofastdfs{
server localhost:8081;
keepalive 32;
}
server {
listen 8080;
server_name localhost;
gzip on;
gzip_types '*';
location / {
auth_basic "Caution";
auth_basic_user_file /etc/nginx/conf.d/.htpasswd;
keepalive_timeout 620;
proxy_redirect off;
proxy_buffering off;
proxy_pass http://gofastdfs;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
But my configuration authorizes every URL, I only want to limit to /

Answer 1

location / matches any URI that is not handled by some other location block - i.e. it is the default location.
location = / only matches the single URI /.
See this document for details.
You can split your configuration into two location blocks using one with authentication and the other without. Some statements will need to be duplicated between both location blocks, but most can be moved into the outer context.
For example:
keepalive_timeout 620;
proxy_redirect off;
proxy_buffering off;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
location = / {
auth_basic "Caution";
auth_basic_user_file /etc/nginx/conf.d/.htpasswd;
proxy_pass http://gofastdfs;
}
location / {
proxy_pass http://gofastdfs;
}