Redirect www to non-www nginx configuration

Redirect single domain with www to non-www. For example, redirecting of http://www.dennylabs.com to http://dennylabs.com. Why do we need to redirect www to non-www or vice versa? It all because of SEO purposes. Google treats your content as duplicate when they are crawl-able from both www and non-www. Nginx configuration for single domain redirection of www to non-www . server { server_name www.dennylabs.com; return 301 $scheme://dennylabs.com$request_uri; } Nginx configuration for multiple domains redirection of www to non-www. server { server_name "~^www\.(.*)$" ; return 301 $scheme://$1$request_uri;...