How can I redirect non-www to www in https NGINX

问题

I have a question related with Nginx redirects Bellow you can see configurations. My goal is to redirect from https://example.com to https://www.example.com

I looked through almost all in stackoverflow and I didn't find any help. Please help me with this issue. I will provide all necessary information about my Nginx Web Server. I hope you will help me, with this difficult question.

My file nginx.conf looks like there:

user www-data;
worker_processes 4;
pid /run/nginx.pid;

events {
  worker_connections 768;
}

http {
  sendfile on;
  tcp_nopush on;
  tcp_nodelay on;
  keepalive_timeout 65;
  types_hash_max_size 2048;

  server_names_hash_bucket_size 64;

  include /etc/nginx/mime.types;
  default_type application/octet-stream;

  access_log /var/log/nginx/access.log;
  error_log /var/log/nginx/error.log;

  gzip on;
  gzip_static on;
  gzip_disable "msie6";

  gzip_vary on;
  gzip_proxied any;
  gzip_comp_level 9;
  # gzip_buffers 16 8k;
  gzip_http_version 1.1;
  gzip_types text/plain text/css application/json application/x-javascript text/xml application/xm$

  include /etc/nginx/conf.d/*.conf;
  include /etc/nginx/sites-enabled/*;
}

My file /etc/nginx/sites-enabled/example:

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

server {
  listen 443 ssl;
  server_name www.example.com;
  ssl_stapling on;
  ssl on;
  ssl_certificate /etc/letsencrypt/live/www.example.com/fullchain.pem; # managed by Certbot
  ssl_certificate_key /etc/letsencrypt/live/www.example.com/privkey.pem; # managed by Certbot

  root /var/www/example/public;
  index ../views/index.html;

  location /img/ {
    proxy_pass http://127.0.0.1:3010;
    proxy_cache off;
    proxy_cache_key "$proxy_host$uri$is_args$args";
  }

  location / {
    proxy_pass http://127.0.0.1:3010;
    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;
  }

  location ~* \.(?:jpg|jpeg|gif|png|ico|cur|gz|svg|svgz|mp4|ogg|ogv|webm|css|js|html)$ {
    root /var/www/example/public;
    expires 1y;
    access_log off;
    add_header Cache-Control "public";
  }
}

回答1:

Just create a server for non-www requests, for example:

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

# redirect http://example.com to https://www.example.com
server {
    listen 443 ssl;
    server_name example.com;

    # ssl ...

    return 301 https://www.example.com$request_uri;
}

# https://www.example.com
server {
    listen 443 ssl;
    server_name www.example.com;

    # ssl ...
}

The DNS records for example.com and www.example.com should be pointing to your Nginx server

回答2:

Quick instruction for redirect and also for ssl

Don't write all conf all your sites in one file nginx.conf. Separate these. You have two folders for it /etc/nginx/sites-available/ and /etc/nginx/sites-enabled/

Add file for your site for example /etc/nginx/sites-available/example Make link ln -s /etc/nginx/sites-enabled/example

To this conf file paste text below:

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

server {
  listen 443 ssl;
  server_name www.example.com;
  ssl_stapling on;
  ssl on;
  ssl_certificate /etc/letsencrypt/live/www.site.com/fullchain.pem;     
  ssl_certificate_key /etc/letsencrypt/live/www.site.com/privkey.pem;
  # your location there a
}

In you nginx.conf ypu already have row include /etc/nginx/sites-enabled/*; it means automatically take all of their sites configs from folder sites-enabled

After it check syntax with command nginx -t and reload your nginx with command systemctl reload nginx

And after all off this who call your site via http://example.com or https://example.com will be redirected to https://www.example.com

来源：https://stackoverflow.com/questions/51473035/how-can-i-redirect-non-www-to-www-in-https-nginx