如何在数字海洋的不同子域上部署多个 NodeJS 应用程序

Question

大家好，所以早些时候我部署了一个在一个端口上运行但使用 Nginx 的 nodejs 应用程序，我仍然可以接受默认 HTTP/HTTPS 端口上的请求并将它们转发到我的应用程序的端口。现在我想部署同一应用程序的管理部分，该应用程序构建在自己的项目空间中，并在与我的客户端应用程序略有不同的端口上运行；我想把它分配给一个子域。

我在 Digital Ocean 上运行 Ubuntu 发行版。我怎样才能做到这一点？

下面是我的整个 nginx 配置：

# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# https://www.nginx.com/resources/wiki/start/
# https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
# https://wiki.debian.org/Nginx/DirectoryStructure
#
# In most cases, administrators will remove this file from sites-enabled/ and
# leave it as reference inside of sites-available where it will continue to be
# updated by the nginx packaging team.
#
# This file will automatically load configuration files provided by other
# applications, such as Drupal or Wordpress. These applications will be made
# available underneath a path with that package name, such as /drupal8.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

# Default server configuration
#
server {

    # SSL configuration
    

    root /var/www/html;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html;

    server_name mydomain.com www.mydomain.com;

    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        proxy_pass http://localhost:5000; #whatever port your app runs on
        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;
    }

    # pass PHP scripts to FastCGI server
    #
    #location ~ \.php$ {
    #   include snippets/fastcgi-php.conf;
    #
    #   # With php-fpm (or other unix sockets):
    #   fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
    #   # With php-cgi (or other tcp sockets):
    #   fastcgi_pass 127.0.0.1:9000;
    #}

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    #
    #location ~ /\.ht {
    #   deny all;
    #}

    listen [::]:443 ssl ipv6only=on; # managed by Certbot
    listen 443 ssl; # managed by Certbot
    ssl_certificate /etc/letsencrypt/live/mydomain.com/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/mydomain.com/privkey.pem; # managed by Certbot
    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}






# Virtual Host configuration for example.com
#
# You can move that to a different file under sites-available/ and symlink that
# to sites-enabled/ to enable it.
#
server {
 index index.html index.htm index.nginx-debian.html;

        server_name admin.mydomain.com;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                proxy_pass http://localhost:3000; #whatever port your app runs on
                        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;
        }

}
#server {
#   listen 80;
#   listen [::]:80;
#
#   server_name example.com;
#
#   root /var/www/example.com;
#   index index.html;
#
#   location / {
#       try_files $uri $uri/ =404;
#   }
#}

server {

    if ($host = mydomain.com) {
        return 301 https://$host$request_uri;
    } # managed by Certbot


    listen 80 default_server;   listen [::]:80 default_server;

    server_name mydomain.com www.mydomain.com;
    return 404; # managed by Certbot


}

我的管理节点应用在端口 3000 上运行，客户端应用在 5000 上运行

Answer 1

您的 nginx 配置看起来不错，为了达到预期的效果，您必须在数字海洋面板中为您的新域添加新的 dns 解析。

添加一个新的 cname 记录，作为您的域的别名，如下所示：

CNAME admin.mydomain.com 
is an alias of mydomain.com

1. 数字海洋面板
2. 网络
3. DNS 记录
4. 创建新记录cname类型

此配置必须与 server_name 属性的当前 nginx 配置相匹配。