Nginx 301 domain redirect not working

301-redirectdomain-name-systemnginx

I am trying to redirect (or I guess forward) my old domain (example.com) to my new domain (example2.com) now that I have updated my server config to accommodate the new domain. However, it doesn't appear that the 301 redirect clause in my Nginx config is working properly because I'm still able to access example.com, which redirects to https://www.example.com like the configuration that was set up prior to pointing this server to the new domain. When https://www.example.com is accessed it renders Your connection is not private which makes sense as I changed the SSL config to point to the certificates for example2.com. Is there something wrong with my 301 configuration? If there isn't, could it be that I still have an A record (example.com) and CNAME record (www.example.com) pointing to my IP address that is allow access to the site through the old domain to exist?

Note: I have no problem accessing example2.com which redirect to https://www.example2.com as expected

Here is my Nginx config:

server {
    listen 80;
    listen [::]:80;
    server_name example2.com www.example2.com example.com www.example.com;
    return 301 https://www.example2.com$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    include snippets/ssl-www.example2.com.conf;
    include snippets/ssl-params.conf;
    server_name example2.com;
    return 301 https://www.$server_name$request_uri;
}

server {
    listen 443 ssl http2 default_server;
    listen [::]:443 ssl http2 default_server;
    include snippets/ssl-www.example2.com.conf;
    include snippets/ssl-params.conf;

    server_name www.example2.com;

    client_max_body_size 100M;

    location ~ ^/\.well-known {
        root /var/www/ghost;
        allow all;
    }

    location / {
        proxy_pass http://127.0.0.1:2368;
        proxy_buffering off;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Referer "";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_http_version 1.1;
    }
}

Best Answer

Firstly, you don't have to set IPv6 unless you want to use it specifically. Use your config like this:

server {
    listen 80;
    server_name example2.com www.example2.com example.com www.example.com;
    return 301 https://www.example2.com$request_uri;
}

server {
    listen 443 ssl http2;
    server_name example2.com;
    return 301 https://www.example2.com$request_uri;
}

server {
    listen 443 ssl http2;
    server_name www.example2.com;

    ssl_dhparam /etc/nginx/ssl/dhparam.pem;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:ECDHE-RSA-AES128-GCM-SHA256:AES256+EECDH:DHE-RSA-AES128-GCM-SHA256:AES256+EDH:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES256-SHA:AES128-SHA:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
    add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";

    ssl_certificate         /etc/nginx/ssl/example2.com.crt;
    ssl_certificate_key     /etc/nginx/ssl/example2.com.key;

    client_max_body_size 100M;

    location ~ ^/\.well-known {
        root /var/www/ghost;
        allow all;
    }

    location / {
        proxy_pass http://127.0.0.1:2368;
        proxy_buffering off;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Referer "";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_http_version 1.1;
    }
}

Also, do not forget to create the /etc/nginx/ssl folder and the dhparam.pem file.

sudo mkdir /etc/nginx/ssl && sudo openssl dhparam -dsaparam -out /etc/nginx/ssl/dhparam.pem 4096
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