如何在WordPress多站点中仅将主站301重定向至新域名

The issue with your initial Redirect 301 / http://www.main-site-new.com/ rule is that it’s a broad catch-all—every request under www.main-site-old.com (including sub-sites like /site1) gets redirected. We need to use targeted rewrite conditions to exclude sub-sites while redirecting only the main site.

Apache Server (Using .htaccess) #

This is the most common setup for WordPress. Add these rules before the default WordPress Network rewrite rules in your root .htaccess file:

RewriteEngine On

# Target only the old main domain
RewriteCond %{HTTP_HOST} ^www\.main-site-old\.com$ [NC]

# Exclude your sub-sites—add one line per sub-site
RewriteCond %{REQUEST_URI} !^/site1/ [NC]
RewriteCond %{REQUEST_URI} !^/site2/ [NC]
# If all your sub-sites start with "/site", you can use this single line instead:
# RewriteCond %{REQUEST_URI} !^/site [NC]

# Redirect to the new domain, preserving the original path (e.g., /about → new-domain.com/about)
RewriteRule ^(.*)$ https://www.main-site-new.com/$1 [R=302,L]

Key Notes: #

• Use R=302 first for testing—301 redirects are cached by browsers, which can make troubleshooting a pain. Once you confirm everything works, switch to R=301.
• Place these rules above the WordPress-generated # BEGIN WordPress section. WordPress’s own rewrite rules handle sub-site routing, so we want to check for redirects first.
• If you add more sub-sites later, just add another RewriteCond %{REQUEST_URI} !^/new-site/ [NC] line.

Nginx Server #

If you’re using Nginx, update your server block configuration for www.main-site-old.com like this:

server {
    listen 80;
    listen 443 ssl;
    server_name www.main-site-old.com;

    # Redirect main site only—exclude any path starting with /site
    if ($request_uri !~ ^/site) {
        return 302 https://www.main-site-new.com$request_uri;
    }

    # WordPress Network routing rules
    location / {
        try_files $uri $uri/ /index.php?$args;
    }

    # Add your other Nginx configs (SSL, PHP handling, etc.) here
}

Testing Tips: #

• Clear your browser cache before testing, or use incognito mode to avoid cached redirects.
• Verify:
  • Main site pages (e.g., www.main-site-old.com/about) redirect to www.main-site-new.com/about
  • Sub-sites (e.g., www.main-site-old.com/site1) load normally without redirects

内容的提问来源于stack exchange，提问作者Thanos Manolis