是否可以在NGINX和Docker容器之间共享端口?

如何解决是否可以在NGINX和Docker容器之间共享端口?

我有Ubuntu 18:04 / NGINX VPS,其中有一堆Laravel项目块,都使用ssl(certbot)。

我想通过Docker Compose在同一VPS上部署Nextcloud:

version: "3"
services:


proxy:
    image: jwilder/nginx-proxy:alpine
    labels:
    # labels needed by lets encrypt to identify container to generate certs in
    - "com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy=true"
    container_name: nextcloud-proxy
    networks:
    - nextcloud_network
    ports:
    - 80:80
    - 443:443
    volumes:
    - ./proxy/conf.d:/etc/nginx/conf.d:rw
    - ./proxy/vhost.d:/etc/nginx/vhost.d:rw
    - ./proxy/html:/usr/share/nginx/html:rw
    - ./proxy/certs:/etc/nginx/certs:ro
    - /etc/localtime:/etc/localtime:ro
    - /var/run/docker.sock:/tmp/docker.sock:ro
    restart: unless-stopped


letsencrypt:
    image: jrcs/letsencrypt-nginx-proxy-companion:v1.12.1
    container_name: nextcloud-letsencrypt
    depends_on:
        - proxy
    networks:
        - nextcloud_network
    volumes:
        - ./proxy/certs:/etc/nginx/certs:rw
        - ./proxy/vhost.d:/etc/nginx/vhost.d:rw
        - ./proxy/html:/usr/share/nginx/html:rw
        - /etc/localtime:/etc/localtime:ro
        - /var/run/docker.sock:/var/run/docker.sock:ro
    restart: unless-stopped


db:
    image: mariadb:10.5.1
    container_name: nextcloud-mariadb
    networks:
        - nextcloud_network
    volumes:
        - ./db:/var/lib/mysql
        - ./dbdumps:/var/dbdumps
        - /etc/localtime:/etc/localtime:ro
    environment:
        - MYSQL_ROOT_PASSWORD=...   # set me
        - MYSQL_PASSWORD=...        # set me
        - MYSQL_DATABASE=...        # set me
        - MYSQL_USER=...            # set me
    restart: unless-stopped


redis:
    container_name: nextcloud-redis
    image: redis:5.0.8
    restart: unless-stopped
    networks:
        - nextcloud_network
    volumes:
    - ./redis/data:/data
    command: ["redis-server","--appendonly yes"]               


app:
    image: nextcloud:18.0.2
    container_name: nextcloud-app
    networks:
        - nextcloud_network
    depends_on:
        - letsencrypt
        - proxy
        - redis
        - db
    volumes:
        - ./nextcloud:/var/www/html
        - ./app/config:/var/www/html/config
        - ./app/custom_apps:/var/www/html/custom_apps
        - ./app/data:/var/www/html/data
        - ./app/themes:/var/www/html/themes
        - /etc/localtime:/etc/localtime:ro
    environment:
        - VIRTUAL_HOST=YOURDOMAINHERE           # set me
        - LETSENCRYPT_HOST=YOURDOMAINHERE       # set me
        - LETSENCRYPT_EMAIL=you@example.com     # set me
    restart: unless-stopped        


networks:


nextcloud_network:
    driver: bridge

当我运行它时,我得到:

ERROR: for 3f210d699b80_nextcloud-proxy  Cannot start service proxy: driver failed programming 
external connectivity on endpoint nextcloud-proxy 
(2d76e425c94abb95da70a7d903bf8830d4e9192a512e17db1b39f76da85c7b97): Error starting userland proxy: 
listen tcp 0.0.0.0:443: bind: address already in use

ERROR: for proxy  Cannot start service proxy: driver failed programming external connectivity on 
endpoint nextcloud-proxy (2d76e425c94abb95da70a7d903bf8830d4e9192a512e17db1b39f76da85c7b97): Error 
starting userland proxy: listen tcp 0.0.0.0:443: bind: address already in use
ERROR: Encountered errors while bringing up the project.

因为该端口已在使用中。

如果我在VPS上停止NGINX并再次运行docker-compose up -d,一切正常,可以通过URL访问Nextcloud服务。

我试图将外部端口更改为

- 8080:80
- 4444:443

并重建它。然后我看不到上述错误,但一切都搞砸了-网址指向错误的域...

是否可以通过某种方式调整代理容器设置以解决此问题?

解决方法

2个服务无法侦听与您发现的端口相同的端口。您的laravel应用程序已经在侦听端口80/443,因此,当启动nextcloud容器时,它将无法绑定到这些端口。

您必须让jwilder/nginx-proxy:alpine充当nextcloud容器和laravel服务器的代理。这可以通过您的nginx配置完成,并将其安装到您的容器(您似乎在使用./proxy/目录):

https://docs.nginx.com/nginx/admin-guide/web-server/reverse-proxy/

尽管,如果您的VPS能够有2个IP地址,那么您就能够将laravel应用程序绑定到一个接口,并将nextcloud代理绑定到另一个接口,这也将解决您的问题。第一种方法是更好的做法,因为它可以使您更好地扩展服务器,而不必为每个应用程序添加另一个IP地址。

https://docs.docker.com/config/containers/container-networking/

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