How to Redirect Https://Www to Non-Www Https Version In Nginx?

To redirect https://www to the non-www version in nginx, you can use a server block in your nginx configuration file. Within the server block for the www domain, you can add a rewrite rule that redirects requests to the non-www version of the domain. This can be achieved by using the return directive with a 301 status code to perform a permanent redirect. Make sure to include the appropriate server_name directive for both the www and non-www versions of the domain to ensure the redirect works correctly. After making these changes, don't forget to reload nginx for the configuration to take effect.

How can I achieve https://www to non-www https version redirection in nginx?

To achieve redirection from www to non-www version in Nginx, you can use the following configuration:

1. Open the Nginx configuration file for your domain. This file is typically located at /etc/nginx/sites-available/ (or /etc/nginx/conf.d/ on some systems).
2. Add the following server block to redirect requests from www to non-www version:

1
2
3
4
5

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

1. Save the changes and exit the configuration file.
2. Test the Nginx configuration using the following command:

1

sudo nginx -t

1. If the test is successful, reload Nginx to apply the changes:

1

sudo systemctl reload nginx

After these steps, all requests to https://www.example.com will be redirected to https://example.com.

What is the impact of having both www and non-www versions of a website in nginx?

Having both www and non-www versions of a website in nginx can lead to duplicate content issues, which can negatively impact the website's SEO. Search engines may see the www and non-www versions as separate sites, causing a potential split in traffic and dilution of search engine rankings.

To resolve this issue, it is recommended to set up a redirect from one version to the other (typically from non-www to www or vice versa) to ensure that only one version of the site is accessible. This can be done using nginx server blocks and a 301 redirect, which tells search engines that the preferred version of the site has permanently moved to a new location. By implementing this redirect, the website's SEO will be strengthened, and traffic will be consolidated to improve overall performance.

How to update existing URLs to point from https://www to non-www in nginx?

To update existing URLs to point from https://www to non-www in nginx, you can do the following:

1. Open your nginx configuration file. This is typically located at /etc/nginx/nginx.conf or /etc/nginx/sites-available/default.
2. Find the server block where your site is configured and locate the server_name directive. It may look something like this:

1
2
3
4

server {
    server_name www.example.com;
    ...
}

1. Update the server_name directive to include both the www and non-www versions of your domain:

1
2
3
4

server {
    server_name example.com www.example.com;
    ...
}

1. Add a new server block to redirect requests from the www version to the non-www version. Make sure this block appears before your existing server block:

1
2
3
4

server {
    server_name www.example.com;
    return 301 $scheme://example.com$request_uri;
}

1. Save your changes and test the nginx configuration to make sure there are no syntax errors:

1

sudo nginx -t

1. If the test is successful, reload nginx to apply the changes:

1

sudo systemctl reload nginx

With these changes, requests to https://www.example.com will be redirected to https://example.com.

How to handle subdomains when redirecting www to non-www in nginx?

To handle subdomains when redirecting www to non-www in nginx, you can use a regex pattern in the server block to match the subdomains and redirect them accordingly. Here is an example configuration:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22

server {
    listen 80;
    server_name ~^(?<subdomain>.+)\.example\.com$;  # Match any subdomain

    return 301 https://example.com$request_uri;  # Redirect to non-www
}

server {
    listen 80;
    server_name www.example.com;

    return 301 https://example.com$request_uri;  # Redirect to non-www
}

server {
    listen 443 ssl;
    server_name example.com;

    # Your SSL certificate configuration

    # Your website configuration
}

In this configuration, the first server block matches any subdomain and redirects it to the non-www version of the domain. The second server block specifically matches the www subdomain and also redirects it to the non-www version of the domain. Finally, the third server block listens on port 443 for HTTPS traffic and handles the non-www version of the domain.

With this configuration, all subdomains and the www subdomain will be properly redirected to the non-www version of the domain in nginx.