Redirect non-www to www
For Single Domain:
server {
server_name example.com;
return 301 $scheme://www.example.com$request_uri;
}
For All Domains:
server {
server_name "~^(?!www\.).*";
return 301 $scheme://www.$host$request_uri;
}
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Redirect www to non-www
For Single Domain:
server {
server_name www.example.com;