Docker nginx: Redirects to port 80 instead of mapped port

Question

I am making this wordpress solution and for "dieting" reasons I am moving into alpine-based images.

On this I managed to use an external configuration (file) and via volume I pass it into nginx.

server {
  listen 80;
  root /var/www/html;
  index index.php;

  location / {
    try_files $uri $uri/ /index.php;
  }

  location ~ .php{
    try_files $uri =404;
    fastcgi_pass wordpress:9000;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
    fastcgi_param  SERVER_SOFTWARE    nginx;
    fastcgi_param  QUERY_STRING       $query_string;
    fastcgi_param  REQUEST_METHOD     $request_method;
    fastcgi_param  CONTENT_TYPE       $content_type;
    fastcgi_param  CONTENT_LENGTH     $content_length;
    fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
    fastcgi_param  REQUEST_URI        $request_uri;
    fastcgi_param  DOCUMENT_URI       $document_uri;
    fastcgi_param  DOCUMENT_ROOT      $document_root;
    fastcgi_param  SERVER_PROTOCOL    $server_protocol;
    fastcgi_param  REMOTE_ADDR        $remote_addr;
    fastcgi_param  REMOTE_PORT        $remote_port;
    fastcgi_param  SERVER_ADDR        $server_addr;
    fastcgi_param  SERVER_PORT        $server_port;
    fastcgi_param  SERVER_NAME        $server_name;
    fastcgi_intercept_errors  on;
  }
}

But when I try to visit it on a browser by giving http://localhost:8080 (where I map the port 80 it into my docker-compose.yml):

version: '2'
services:
  nginx:
    image: nginx:alpine
    ports:
      - "8080:80"
    volumes:
      - './conf/nginx/:/etc/nginx/conf.d/:ro'
    links:
      - "wordpress"
    volumes_from:
      - "wordpress:ro"

  wordpress-db:
    image: mariadb
    environment:
      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
      MYSQL_ONETIME_PASSWORD: "yes"
      MYSQL_DATABASE: "wordpress"
      MYSQL_USER: '${WORDPRESS_MYSQL_USER}'
      MYSQL_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'

  wordpress:
    build:
      context: .
      dockerfile: Dockerfile
    image: ellakcy/wordpressswithplugins:alpine
    links:
      - wordpress-db
    environment:
        WORDPRESS_DB_HOST: wordpress-db:/var/run/mysqld/mysqld.sock
        WORDPRESS_DB_USER: '${WORDPRESS_MYSQL_USER}'
        WORDPRESS_DB_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'
        WORDPRESS_ADMIN_USERNAME: '${WORDPRESS_ADMIN_USER}'
        WORDPRESS_ADMIN_PASSWORD: '${WORDPRESS_ADMIN_PASSWORD}'
        WORDPRESS_URL: '${WORDPRESS_URL}'

But for some reason seems that redirects to port 80.

Also when I run via docker-compose up command I get the following piece of log:

wordpress_1     | 172.23.0.4 -  18/Aug/2017:12:36:57 +0000 "GET /index.php" 301
nginx_1         | 172.23.0.1 - - [18/Aug/2017:12:36:57 +0000] "GET / HTTP/1.1" 301 5 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0" "-"
wordpress_1     | 172.23.0.4 -  18/Aug/2017:12:41:22 +0000 "GET /index.php" 301
nginx_1         | 172.23.0.1 - - [18/Aug/2017:12:41:22 +0000] "GET / HTTP/1.1" 301 5 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0" "-"

So I guess for some reason the nginx performs a 301 redirect to port 80. Do you have any Idea why that happens?

Edit 1

I also tried to set the 8080 port into the nginx configuration too:

Nginx configuration:

server {
  listen 8080;
  root /var/www/html;
  index index.php;

  location / {
    try_files $uri $uri/ /index.php;
  }

  location ~ .php{
    try_files $uri =404;
    fastcgi_pass wordpress:9000;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
    fastcgi_param  SERVER_SOFTWARE    nginx;
    fastcgi_param  QUERY_STRING       $query_string;
    fastcgi_param  REQUEST_METHOD     $request_method;
    fastcgi_param  CONTENT_TYPE       $content_type;
    fastcgi_param  CONTENT_LENGTH     $content_length;
    fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
    fastcgi_param  REQUEST_URI        $request_uri;
    fastcgi_param  DOCUMENT_URI       $document_uri;
    fastcgi_param  DOCUMENT_ROOT      $document_root;
    fastcgi_param  SERVER_PROTOCOL    $server_protocol;
    fastcgi_param  REMOTE_ADDR        $remote_addr;
    fastcgi_param  REMOTE_PORT        $remote_port;
    fastcgi_param  SERVER_ADDR        $server_addr;
    fastcgi_param  SERVER_PORT        $server_port;
    fastcgi_param  SERVER_NAME        $server_name;
    fastcgi_intercept_errors  on;
  }
}

docker-compose.yml:

version: '2' services: nginx: image: nginx:alpine ports: - "8080:8080" volumes: - './conf/nginx/:/etc/nginx/conf.d/:ro' links: - "wordpress" volumes_from: - "wordpress:ro"

  wordpress-db:
    image: mariadb
    environment:
      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
      MYSQL_ONETIME_PASSWORD: "yes"
      MYSQL_DATABASE: "wordpress"
      MYSQL_USER: '${WORDPRESS_MYSQL_USER}'
      MYSQL_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'

  wordpress:
    build:
      context: .
      dockerfile: Dockerfile
    image: ellakcy/wordpressswithplugins:alpine
    links:
      - wordpress-db
    environment:
        WORDPRESS_DB_HOST: wordpress-db:/var/run/mysqld/mysqld.sock
        WORDPRESS_DB_USER: '${WORDPRESS_MYSQL_USER}'
        WORDPRESS_DB_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'
        WORDPRESS_ADMIN_USERNAME: '${WORDPRESS_ADMIN_USER}'
        WORDPRESS_ADMIN_PASSWORD: '${WORDPRESS_ADMIN_PASSWORD}'
        WORDPRESS_URL: '${WORDPRESS_URL}'

I still get the same behaviour

I am making this wordpress solution and for "dieting" reasons I am moving into alpine-based images.

On this I managed to use an external configuration (file) and via volume I pass it into nginx.

server {
  listen 80;
  root /var/www/html;
  index index.php;

  location / {
    try_files $uri $uri/ /index.php;
  }

  location ~ .php{
    try_files $uri =404;
    fastcgi_pass wordpress:9000;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
    fastcgi_param  SERVER_SOFTWARE    nginx;
    fastcgi_param  QUERY_STRING       $query_string;
    fastcgi_param  REQUEST_METHOD     $request_method;
    fastcgi_param  CONTENT_TYPE       $content_type;
    fastcgi_param  CONTENT_LENGTH     $content_length;
    fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
    fastcgi_param  REQUEST_URI        $request_uri;
    fastcgi_param  DOCUMENT_URI       $document_uri;
    fastcgi_param  DOCUMENT_ROOT      $document_root;
    fastcgi_param  SERVER_PROTOCOL    $server_protocol;
    fastcgi_param  REMOTE_ADDR        $remote_addr;
    fastcgi_param  REMOTE_PORT        $remote_port;
    fastcgi_param  SERVER_ADDR        $server_addr;
    fastcgi_param  SERVER_PORT        $server_port;
    fastcgi_param  SERVER_NAME        $server_name;
    fastcgi_intercept_errors  on;
  }
}

But when I try to visit it on a browser by giving http://localhost:8080 (where I map the port 80 it into my docker-compose.yml):

version: '2'
services:
  nginx:
    image: nginx:alpine
    ports:
      - "8080:80"
    volumes:
      - './conf/nginx/:/etc/nginx/conf.d/:ro'
    links:
      - "wordpress"
    volumes_from:
      - "wordpress:ro"

  wordpress-db:
    image: mariadb
    environment:
      MYSQL_RANDOM_ROOT_PASSWORD: "yes"
      MYSQL_ONETIME_PASSWORD: "yes"
      MYSQL_DATABASE: "wordpress"
      MYSQL_USER: '${WORDPRESS_MYSQL_USER}'
      MYSQL_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'

  wordpress:
    build:
      context: .
      dockerfile: Dockerfile
    image: ellakcy/wordpressswithplugins:alpine
    links:
      - wordpress-db
    environment:
        WORDPRESS_DB_HOST: wordpress-db:/var/run/mysqld/mysqld.sock
        WORDPRESS_DB_USER: '${WORDPRESS_MYSQL_USER}'
        WORDPRESS_DB_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'
        WORDPRESS_ADMIN_USERNAME: '${WORDPRESS_ADMIN_USER}'
        WORDPRESS_ADMIN_PASSWORD: '${WORDPRESS_ADMIN_PASSWORD}'
        WORDPRESS_URL: '${WORDPRESS_URL}'

But for some reason seems that redirects to port 80.

Also when I run via docker-compose up command I get the following piece of log:

wordpress_1     | 172.23.0.4 -  18/Aug/2017:12:36:57 +0000 "GET /index.php" 301
nginx_1         | 172.23.0.1 - - [18/Aug/2017:12:36:57 +0000] "GET / HTTP/1.1" 301 5 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0" "-"
wordpress_1     | 172.23.0.4 -  18/Aug/2017:12:41:22 +0000 "GET /index.php" 301
nginx_1         | 172.23.0.1 - - [18/Aug/2017:12:41:22 +0000] "GET / HTTP/1.1" 301 5 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0" "-"

So I guess for some reason the nginx performs a 301 redirect to port 80. Do you have any Idea why that happens?

Edit 1

I also tried to set the 8080 port into the nginx configuration too:

Nginx configuration:

server {
  listen 8080;
  root /var/www/html;
  index index.php;

  location / {
    try_files $uri $uri/ /index.php;
  }

  location ~ .php{
    try_files $uri =404;
    fastcgi_pass wordpress:9000;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
    fastcgi_param  SERVER_SOFTWARE    nginx;
    fastcgi_param  QUERY_STRING       $query_string;
    fastcgi_param  REQUEST_METHOD     $request_method;
    fastcgi_param  CONTENT_TYPE       $content_type;
    fastcgi_param  CONTENT_LENGTH     $content_length;
    fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
    fastcgi_param  REQUEST_URI        $request_uri;
    fastcgi_param  DOCUMENT_URI       $document_uri;
    fastcgi_param  DOCUMENT_ROOT      $document_root;
    fastcgi_param  SERVER_PROTOCOL    $server_protocol;
    fastcgi_param  REMOTE_ADDR        $remote_addr;
    fastcgi_param  REMOTE_PORT        $remote_port;
    fastcgi_param  SERVER_ADDR        $server_addr;
    fastcgi_param  SERVER_PORT        $server_port;
    fastcgi_param  SERVER_NAME        $server_name;
    fastcgi_intercept_errors  on;
  }
}

docker-compose.yml:

version: '2'
    services:
      nginx:
        image: nginx:alpine
        ports:
          - "8080:8080"
        volumes:
          - './conf/nginx/:/etc/nginx/conf.d/:ro'
        links:
          - "wordpress"
        volumes_from:
          - "wordpress:ro"

      wordpress-db:
        image: mariadb
        environment:
          MYSQL_RANDOM_ROOT_PASSWORD: "yes"
          MYSQL_ONETIME_PASSWORD: "yes"
          MYSQL_DATABASE: "wordpress"
          MYSQL_USER: '${WORDPRESS_MYSQL_USER}'
          MYSQL_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'

      wordpress:
        build:
          context: .
          dockerfile: Dockerfile
        image: ellakcy/wordpressswithplugins:alpine
        links:
          - wordpress-db
        environment:
            WORDPRESS_DB_HOST: wordpress-db:/var/run/mysqld/mysqld.sock
            WORDPRESS_DB_USER: '${WORDPRESS_MYSQL_USER}'
            WORDPRESS_DB_PASSWORD: '${WORDPRESS_MYSQL_PASSWORD}'
            WORDPRESS_ADMIN_USERNAME: '${WORDPRESS_ADMIN_USER}'
            WORDPRESS_ADMIN_PASSWORD: '${WORDPRESS_ADMIN_PASSWORD}'
            WORDPRESS_URL: '${WORDPRESS_URL}'

I still get the same behaviour.

Edit 2

I also tried to use the following nginx settings (fot the nginx container)

server {
  listen 8080;
  root /var/www/html;
  index index.php;

  location / {
    try_files $uri $uri/ /index.php?q=$uri&$args;
  }

  location ~ .php {
    try_files $uri =404;
    fastcgi_pass wordpress:9000;
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
    fastcgi_param  SERVER_SOFTWARE    nginx;
    fastcgi_param  QUERY_STRING       $query_string;
    fastcgi_param  REQUEST_METHOD     $request_method;
    fastcgi_param  CONTENT_TYPE       $content_type;
    fastcgi_param  CONTENT_LENGTH     $content_length;
    fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
    fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
    fastcgi_param  REQUEST_URI        $request_uri;
    fastcgi_param  DOCUMENT_URI       $document_uri;
    fastcgi_param  DOCUMENT_ROOT      $document_root;
    fastcgi_param  SERVER_PROTOCOL    $server_protocol;
    fastcgi_param  REMOTE_ADDR        $remote_addr;
    fastcgi_param  REMOTE_PORT        $remote_port;
    fastcgi_param  SERVER_ADDR        $server_addr;
    fastcgi_param  SERVER_PORT        $server_port;
    fastcgi_param  SERVER_NAME        $server_name;
    fastcgi_intercept_errors  on;
  }

}

And still I see no light in my path.

In the end it was a bug in the script as mentioned in: https://stackoverflow.com/questions/45760723/docker-nginx-fpm-for-some-reason-when-i-visit-the-mapped-port-it-redirects-in — Dimitrios Desyllas, Aug 21 '17 at 06:20

Docker nginx: Redirects to port 80 instead of mapped port

Edit 1

Edit 1

Edit 2

0 Answers0