502 - Bad Gateway /"连接被拒绝连接到上游"通过完全不受限制的unix插槽

时间:2017-07-27 19:45:00

标签: php nginx docker docker-compose unix-socket

TL; DR:

我的应用程序包含一个nginx容器,该容器链接到php容器,如果我尝试访问我的话,我会在浏览器中获得connection refused502 - Bad Gateway app使用完全不受限制的(0777模式)unix套接字,两个容器都可以访问。

我使用docker-compose来管理我的应用,并使用泊坞机在OSX上运行。

我的问题:

我已经设置了一个带有两个容器(nginx + php)的小项目,并且它适用于TCP套接字。

但是我想切换到unix套接字,并且在尝试访问我的应用时收到502 - Bad Gateway和以下日志:

nginx_1    | 2017/07/27 19:12:09 [error] 5#5: *1 connect() to unix:/sock/php.sock failed (111: Connection refused) while connecting to upstream, client: 192.168.99.1, server: 192.168.99.100, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/sock/php.sock:", host: "192.168.99.100:10080"
nginx_1    | 192.168.99.1 - - [27/Jul/2017:19:12:09 +0000] "GET / HTTP/1.1" 502 173 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Firefox/52.0"
nginx_1    | 192.168.99.1 - - [27/Jul/2017:19:12:09 +0000] "GET /favicon.ico HTTP/1.1" 502 173 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:52.0) Gecko/20100101 Firefox/52.0"

我已经在包含套接字的目录中安装了两个容器上的命名卷(参见docker-compose.yml bellow)

我不明白为什么因为unix套接字可以从两个容器访问而且完全不受限制:

来自php容器:

/sock # ls -la
total 8
drwxrwxrwx    2 root     root          4096 Jul 27 17:56 .
drwxr-xr-x   57 root     root          4096 Jul 27 17:33 ..
-rwxrwxrwx    1 root     root             0 Jul 27 17:30 php.sock

来自nginx容器:

# cd /sock
# ls -la
total 8
drwxrwxrwx  2 root root 4096 Jul 27 17:56 .
drwxr-xr-x 31 root root 4096 Jul 27 17:33 ..
-rwxrwxrwx  1 root root    0 Jul 27 17:30 php.sock

我检查过:修改一个容器中的/sock内容也会修改另一个容器中同一目录的内容。

问题是什么?

关于我的项目的详细信息:

我的项目包括以下的arborescence:

.
├── docker-compose.yml
├── index.php
├── services
│   ├── app
│   │   └── Dockerfile
│   └── nginx
│       └── nginx.conf
├── [Other php sources files and directories]
└── static
    └── foo.html

这是我的docker-compose.yml

version: '3'
services:
  db:   # I have no problem with the DB so far.
    image: mysql
    environment:
      - MYSQL_ROOT_PASSWORD=XXXXXXXX
      - MYSQL_USER=XXXXXXXX
      - MYSQL_PASSWORD=XXXXXXXX
      - MYSQL_DATABASE=XXXXXXXX
    volumes:
      - /var/lib/app/app_DB:/var/lib/mysql
  nginx:
    image: nginx
    volumes:
      - /var/lib/app/media:/var/www/media:ro
      - /Users/vmonteco/Code/web/app/static:/var/www/static:ro
      - /Users/vmonteco/Code/web/app/services/nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - /Users/vmonteco/Code/web/app:/var/www/html:ro
      - unix_socket:/sock
    ports:
      - "10080:80"
      - "10443:443"
  app:
    build:
      context: services/app
    # ports:
    #   - "19000:9000"
    links:
      - db
    volumes:
      - /var/lib/app/media:/var/www/media
      - /Users/vmonteco/Code/web/app/static:/var/www/static:ro
      - /Users/vmonteco/Code/web/app:/var/www/html:ro
      - unix_socket:/sock
    depends_on:
      - db

volumes:
  unix_socket:

这是app Dockerfile:

FROM php:7.1-fpm-alpine

RUN docker-php-ext-install pdo pdo_mysql
RUN mkdir /sock && chmod -R 777 /sock
VOLUME /sock
RUN sed -i '/;listen.mode = 0660/c\listen.mode = 0777' /usr/local/etc/php-fpm.d/www.conf && sed -i '/listen = 127.0.0.1:9000/c\listen = /sock/php.sock' /usr/local/etc/php-fpm.d/www.conf

nginx配置文件:

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    root     /var/www/html/;

    server {
        listen              80;
        server_name         192.168.99.100;

        location /media/ {
            alias           /var/www/media/;
            autoindex       off;
        }

        location /static/ {
            alias           /var/www/static/;
            autoindex       off;
        }

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

        location ~ \.php$ {
            #try_files $uri =404;
            #fastcgi_pass 192.168.99.100:19000;
            fastcgi_pass unix:/sock/php.sock;
            fastcgi_split_path_info ^(.+\.php)(/.*)$;
            include fastcgi_params;
            fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
            fastcgi_param  HTTPS              off;
            fastcgi_index index.php;
        }
    }
}

(请注意,访问/static//media/网址没有问题。)

/usr/local/etc/php-fpm.d/www.conf容器中php文件中所有未注释的行,在构建时修改:

[www]
user = www-data
group = www-data
listen = /sock/php.sock
listen.mode = 0777
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3

1 个答案:

答案 0 :(得分:0)

我终于找到了解释:

配置fpm服务的文件不是/usr/local/etc/php-fpm.d/www.conf(或者至少不是),但它是/usr/local/etc/php-fpm.d/zz-docker.conf

[global]
daemonize = no

[www]
listen = [::]:9000

修改此文件中的listen指令解决了这个问题。