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Question

Not sure why I can't access my web servers (Ubuntu server on Hyper-V) from host OS (Windows)

Posted January 1, 2020 2.1k views
NginxApacheDocker

My environment: Host OS with Hyper-V Ubuntu Server.

I am running 5 containers (2 DB, 2 Wordpress, 1 NGINX). Here is everything I setup and the NGINX config output. I followed these steps from another dev.

**I created the docker network for NGINX FYI before I ran NGINX.

NGINX YML:

version: "3"
services:
  nginx-proxy:
    image: jwilder/nginx-proxy
    container_name: nginx-proxy
    ports:
      - "80:80"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro

networks:
  default:
    external:
      name: nginx-proxy

1st wordpress YAML:

bain@wordpress:/home/hakase/multi-wp/reagan$ cat docker-compose.yml
version: "3"

services:
   reagan-website:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: PASSWORD
       MYSQL_DATABASE: db2
       MYSQL_USER: wordpress2
       MYSQL_PASSWORD: PASSWORD
     container_name: wordpress_db2

   wordpress:
     depends_on:
       - reagan-website
     image: wordpress:latest
     expose:
       - 80
     restart: always
     environment:
       VIRTUAL_HOST: blog.reagan.localhost
       WORDPRESS_DB_HOST: reagan-website:3306
       WORDPRESS_DB_USER: wordpress2
       WORDPRESS_DB_PASSWORD: PASSWORD
     container_name: wordpress2
volumes:
    db_data:

networks:
  default:
    external:
      name: nginx-proxy

2nd wordpress YAML:

bain@wordpress:/home/hakase/multi-wp/reagan$ cat /home/hakase/multi-wp/zack/docker-compose.yml
version: "3"

services:
   zack-website:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: PASSWORD
       MYSQL_DATABASE: db1
       MYSQL_USER: wordpress1
       MYSQL_PASSWORD: PASSWORD
     container_name: wordpress_db1

   wordpress:
     depends_on:
       - zack-website
     image: wordpress:latest
     expose:
       - 80
     restart: always
     environment:
       VIRTUAL_HOST: blog.zack.localhost
       WORDPRESS_DB_HOST: zack-website:3306
       WORDPRESS_DB_USER: wordpress1
       WORDPRESS_DB_PASSWORD: PASSWORD
     container_name: wordpress1
volumes:
    db_data:

networks:
  default:
    external:
      name: nginx-proxy

My docker conainters running after executing the three YML files:

bain@wordpress:~$ docker ps
WARNING: Error loading config file: /home/bain/.docker/config.json: stat /home/bain/.docker/config.json: permission denied
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS              PORTS                    NAMES
b7336682c99d        wordpress:latest      "docker-entrypoint.s…"   10 hours ago        Up 3 hours          80/tcp                   wordpress2
bd83b37e0fe2        mysql:5.7             "docker-entrypoint.s…"   10 hours ago        Up 3 hours          3306/tcp, 33060/tcp      wordpress_db2
ecc9308b34d1        wordpress:latest      "docker-entrypoint.s…"   10 hours ago        Up 3 hours          80/tcp                   wordpress1
2a829cf66508        mysql:5.7             "docker-entrypoint.s…"   10 hours ago        Up 3 hours          3306/tcp, 33060/tcp      wordpress_db1
a3a0e1a68f66        jwilder/nginx-proxy   "/app/docker-entrypo…"   11 hours ago        Up 2 hours          0.0.0.0:80->80/tcp       nginx-proxy
1b52abdf09fb        wordpress:latest      "docker-entrypoint.s…"   14 hours ago        Up 3 hours          0.0.0.0:8080->80/tcp     wordpress-compose_wordpress_1
010224c98ed6        mariadb               "docker-entrypoint.s…"   14 hours ago        Up 3 hours          0.0.0.0:3306->3306/tcp   wordpress-compose_mysql_1

NGINX config after container made:

root@a3a0e1a68f66:/etc# nginx -T
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
# configuration file /etc/nginx/nginx.conf:

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
}
daemon off;

# configuration file /etc/nginx/mime.types:

types {
    text/html                                        html htm shtml;
    text/css                                         css;
    text/xml                                         xml;
    image/gif                                        gif;
    image/jpeg                                       jpeg jpg;
    application/javascript                           js;
    application/atom+xml                             atom;
    application/rss+xml                              rss;

    text/mathml                                      mml;
    text/plain                                       txt;
    text/vnd.sun.j2me.app-descriptor                 jad;
    text/vnd.wap.wml                                 wml;
    text/x-component                                 htc;

    image/png                                        png;
    image/svg+xml                                    svg svgz;
    image/tiff                                       tif tiff;
    image/vnd.wap.wbmp                               wbmp;
    image/webp                                       webp;
    image/x-icon                                     ico;
    image/x-jng                                      jng;
    image/x-ms-bmp                                   bmp;

    font/woff                                        woff;
    font/woff2                                       woff2;

    application/java-archive                         jar war ear;
    application/json                                 json;
    application/mac-binhex40                         hqx;
    application/msword                               doc;
    application/pdf                                  pdf;
    application/postscript                           ps eps ai;
    application/rtf                                  rtf;
    application/vnd.apple.mpegurl                    m3u8;
    application/vnd.google-earth.kml+xml             kml;
    application/vnd.google-earth.kmz                 kmz;
    application/vnd.ms-excel                         xls;
    application/vnd.ms-fontobject                    eot;
    application/vnd.ms-powerpoint                    ppt;
    application/vnd.oasis.opendocument.graphics      odg;
    application/vnd.oasis.opendocument.presentation  odp;
    application/vnd.oasis.opendocument.spreadsheet   ods;
    application/vnd.oasis.opendocument.text          odt;
    application/vnd.openxmlformats-officedocument.presentationml.presentation
                                                     pptx;
    application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
                                                     xlsx;
    application/vnd.openxmlformats-officedocument.wordprocessingml.document
                                                     docx;
    application/vnd.wap.wmlc                         wmlc;
    application/x-7z-compressed                      7z;
    application/x-cocoa                              cco;
    application/x-java-archive-diff                  jardiff;
    application/x-java-jnlp-file                     jnlp;
    application/x-makeself                           run;
    application/x-perl                               pl pm;
    application/x-pilot                              prc pdb;
    application/x-rar-compressed                     rar;
    application/x-redhat-package-manager             rpm;
    application/x-sea                                sea;
    application/x-shockwave-flash                    swf;
    application/x-stuffit                            sit;
    application/x-tcl                                tcl tk;
    application/x-x509-ca-cert                       der pem crt;
    application/x-xpinstall                          xpi;
    application/xhtml+xml                            xhtml;
    application/xspf+xml                             xspf;
    application/zip                                  zip;

    application/octet-stream                         bin exe dll;
    application/octet-stream                         deb;
    application/octet-stream                         dmg;
    application/octet-stream                         iso img;
    application/octet-stream                         msi msp msm;

    audio/midi                                       mid midi kar;
    audio/mpeg                                       mp3;
    audio/ogg                                        ogg;
    audio/x-m4a                                      m4a;
    audio/x-realaudio                                ra;

    video/3gpp                                       3gpp 3gp;
    video/mp2t                                       ts;
    video/mp4                                        mp4;
    video/mpeg                                       mpeg mpg;
    video/quicktime                                  mov;
    video/webm                                       webm;
    video/x-flv                                      flv;
    video/x-m4v                                      m4v;
    video/x-mng                                      mng;
    video/x-ms-asf                                   asx asf;
    video/x-ms-wmv                                   wmv;
    video/x-msvideo                                  avi;
}

# configuration file /etc/nginx/conf.d/default.conf:
# If we receive X-Forwarded-Proto, pass it through; otherwise, pass along the
# scheme used to connect to this server
map $http_x_forwarded_proto $proxy_x_forwarded_proto {
  default $http_x_forwarded_proto;
  ''      $scheme;
}
# If we receive X-Forwarded-Port, pass it through; otherwise, pass along the
# server port the client connected to
map $http_x_forwarded_port $proxy_x_forwarded_port {
  default $http_x_forwarded_port;
  ''      $server_port;
}
# If we receive Upgrade, set Connection to "upgrade"; otherwise, delete any
# Connection header that may have been passed to this server
map $http_upgrade $proxy_connection {
  default upgrade;
  '' close;
}
# Apply fix for very long server names
server_names_hash_bucket_size 128;
# Default dhparam
ssl_dhparam /etc/nginx/dhparam/dhparam.pem;
# Set appropriate X-Forwarded-Ssl header
map $scheme $proxy_x_forwarded_ssl {
  default off;
  https on;
}
gzip_types text/plain text/css application/javascript application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
log_format vhost '$host $remote_addr - $remote_user [$time_local] '
                 '"$request" $status $body_bytes_sent '
                 '"$http_referer" "$http_user_agent"';
access_log off;
                ssl_protocols TLSv1.2 TLSv1.3;
                ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384';
                ssl_prefer_server_ciphers off;
resolver 127.0.0.11;
# HTTP 1.1 support
proxy_http_version 1.1;
proxy_buffering off;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $proxy_connection;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
proxy_set_header X-Forwarded-Ssl $proxy_x_forwarded_ssl;
proxy_set_header X-Forwarded-Port $proxy_x_forwarded_port;
# Mitigate httpoxy attack (see README for details)
proxy_set_header Proxy "";
server {
        server_name _; # This is just an invalid value which will never trigger on a real hostname.
        listen 80;
        access_log /var/log/nginx/access.log vhost;
        return 503;
}
# blog.reagan.localhost
upstream blog.reagan.localhost {
                                ## Can be connected with "nginx-proxy" network
                        # wordpress2
                        server 172.20.0.3:80;
}
server {
        server_name blog.reagan.localhost;
        listen 80 ;
        access_log /var/log/nginx/access.log vhost;
        location / {
                proxy_pass http://blog.reagan.localhost;
        }
}
# blog.zack.localhost
upstream blog.zack.localhost {
                                ## Can be connected with "nginx-proxy" network
                        # wordpress1
                        server 172.20.0.4:80;
}
server {
        server_name blog.zack.localhost;
        listen 80 ;
        access_log /var/log/nginx/access.log vhost;
        location / {
                proxy_pass http://blog.zack.localhost;
        }
}

IP’s of everything

bain@wordpress:/home/hakase/multi-wp/reagan$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:15:5d:95:71:17 brd ff:ff:ff:ff:ff:ff
    inet 192.168.218.68/28 brd 192.168.218.79 scope global dynamic eth0
       valid_lft 86127sec preferred_lft 86127sec
    inet6 fe80::215:5dff:fe95:7117/64 scope link
       valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 02:42:de:bd:c9:32 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
    inet6 fe80::42:deff:febd:c932/64 scope link
       valid_lft forever preferred_lft forever
4: br-9e66eb9fb660: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
    link/ether 02:42:7f:16:74:b6 brd ff:ff:ff:ff:ff:ff
    inet 172.20.0.1/16 brd 172.20.255.255 scope global br-9e66eb9fb660
       valid_lft forever preferred_lft forever
    inet6 fe80::42:7fff:fe16:74b6/64 scope link
       valid_lft forever preferred_lft forever
6: vethae1a0ff@if5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-9e66eb9fb660 state UP group default
    link/ether de:88:68:41:b9:c2 brd ff:ff:ff:ff:ff:ff link-netnsid 4
    inet6 fe80::dc88:68ff:fe41:b9c2/64 scope link
       valid_lft forever preferred_lft forever
8: veth9e22a38@if7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
    link/ether 6a:a9:18:f3:02:94 brd ff:ff:ff:ff:ff:ff link-netnsid 1
    inet6 fe80::68a9:18ff:fef3:294/64 scope link
       valid_lft forever preferred_lft forever
10: veth911c303@if9: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-9e66eb9fb660 state UP group default
    link/ether e6:c7:7c:b3:36:f9 brd ff:ff:ff:ff:ff:ff link-netnsid 3
    inet6 fe80::e4c7:7cff:feb3:36f9/64 scope link
       valid_lft forever preferred_lft forever
12: vethcf3a3da@if11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-9e66eb9fb660 state UP group default
    link/ether fa:9d:4f:83:ae:95 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::f89d:4fff:fe83:ae95/64 scope link
       valid_lft forever preferred_lft forever
14: veth667a57b@if13: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-9e66eb9fb660 state UP group default
    link/ether 5a:5c:c4:81:0b:74 brd ff:ff:ff:ff:ff:ff link-netnsid 2
    inet6 fe80::585c:c4ff:fe81:b74/64 scope link
       valid_lft forever preferred_lft forever
16: veth1fe63b8@if15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
    link/ether 86:ba:c9:34:a2:98 brd ff:ff:ff:ff:ff:ff link-netnsid 5
    inet6 fe80::84ba:c9ff:fe34:a298/64 scope link
       valid_lft forever preferred_lft forever
26: veth9bb6005@if25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-9e66eb9fb660 state UP group default
    link/ether 06:3e:ac:80:ba:e6 brd ff:ff:ff:ff:ff:ff link-netnsid 6
    inet6 fe80::43e:acff:fe80:bae6/64 scope link
       valid_lft forever preferred_lft forever

Looks like everything is setup correctly, but I can’t access via domain name. I can’t do it by IP since NGINX looks for request from port 80 and if it matches the domain, it forwards the request to the wordpress domain. Since in containers, the IPs are internal to the docker bridged network.

I added the eth0 IP and domain names to SYSTEM32/Drivers/Hosts and can ping using the local domain names. But through the browser, nothing. But NGINX is running because I get a 503 error using the actual server IP.

But If i create a single webserver not using NGINX, I can access it by IP:8080. But hosting several wesites, that’s not feasible. Please help me. 20 hours deep and can’t figure it out.

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1 answer
bobbyiliev January 14, 2020

Hello,

I’ve checked your Docker compose files and it looks all correct. What I could suggest is checking your Nginx Proxy Docker container logs with the docker logs -f CONTAINER_ID command, maybe there you would see more information on what the exact error is.

Also what I would do as a test is to attach to the Nginx Proxy container with docker exec -it CONTAINER_ID bash and try to ping the Wordpress container and maybe run a curl to see if you could actually reach the Wordpress container from inside the Nginx Proxy container.

Another thing that you could try is to run a docker inspect for the Wordpress and the Nginx Proxy containers and make sure that they are actually part of the same network.

Hope that this helps!
Regards,
Bobby

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