一个网站两个域名怎么弄

example.com A 192.168.1.1
another-example.com A 192.168.1.1

server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://localhost:3000;
    }
}

server {
    listen 80;
    server_name another-example.com;

    location / {
        proxy_pass http://localhost:3001;
    }
}

<VirtualHost *:80>
    ServerName example.com
    ProxyPass / http://localhost:3000/
    ProxyPassReverse / http://localhost:3000/
</VirtualHost>

<VirtualHost *:80>
    ServerName another-example.com
    ProxyPass / http://localhost:3001/
    ProxyPassReverse / http://localhost:3001/
</VirtualHost>

server {
    listen 80;
    server_name old-domain.com;
    return 301 $scheme://new-domain.com$request_uri;
}

<VirtualHost *:80>
    ServerName old-domain.com
    Redirect permanent / http://new-domain.com/
</VirtualHost>