Nginx redirect only root domain but not subdomain to www

Question

Currently I'm using setting below to redirect non-www domain to www domain and it's working fine:

server {
    listen       80;
    server_name  example.com;
    return       301 http://www.example.com$request_uri;
}

server {
    listen 80;
    server_name www.example.com;
    location / {
        proxy_pass http://www.example.com:8888;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
}

However, now I would like to allow wildcard subdomain but it seems like all the subdomains were being redirect to www.domain.com. So my question is how can I make it only redirect the root domain to www only and excluding all other subdomain? Thanks.

score 1 · Accepted Answer · answered Jun 28 '17 at 08:57

The first server block is also the implicit default server, which means that any domain name that does not match www.example.com will be handled by it.

If you would like that second server block to handle all domains except example.com, you can make it the default server explicitly, by adding the default_server option to the listen directive. See this document for details.

For example:

server {
    listen       80;
    server_name  example.com;
    return       301 http://www.example.com$request_uri;
}

server {
    listen 80 default_server;
    ...
}

Nginx redirect only root domain but not subdomain to www

1 Answers1