我正在使用 Docker Compose 来编排一个由Django webapp和nginx反向代理组成的多容器应用程序。
我正在盯着一个简单的测试案例，但我已经遇到了障碍。应用程序应通过/通过网络套接字uwsgi_pass将所有请求传递给frontend:8000到Django应用程序。
但是，在使用docker-compose up启动应用程序并且没有看到任何错误消息后，对/的任何请求都会在控制台中生成以下错误消息：gateway_1 | 2016/01/11 15:45:12 [error] 8#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.99.1, server: localhost, request: "GET / HTTP/1.1", upstream: "uwsgi://172.17.0.2:8000", host: "192.168.99.100:8000"
我的问题如下：问题可能是什么？用uwsgi_pass frontend;替换location块中的content_by_lua_file path/to/file.lua;的行为符合预期，因此我怀疑uWSGI在容器链接上存在问题，但我不知道接下来要去哪里看。
以下是相关文件：
docker-compose.yml文件如下：
postgres:
image: mystuff/app.testdb:latest
expose:
- "5432"
frontend:
image: mystuff/app.frontend:latest
expose:
- "8000"
environment:
APP_DBCONN: "user=xxx dbname=xxx port=5432 host=postgres sslmode=require password=xxx"
APP_ENV: "test"
gateway:
image: mystuff/app.gateway:latest
links:
- frontend
expose:
- "8000"
ports:
- "8000:8000"
以下是我的nginx.conf文件：
worker_processes 1;
user me;
events {
use epoll;
worker_connections 1024;
}
http {
access_log /dev/stdout;
upstream frontend {
server frontend:8000; # assumption: `frontend` is a known hostname thanks to docker-compose
}
server {
listen 8000;
server_name localhost;
location / {
uwsgi_pass frontend;
include uwsgi_params;
}
}
}
最后，这是我的uwsgi_params文件：
uwsgi_param QUERY_STRING $query_string;
uwsgi_param REQUEST_METHOD $request_method;
uwsgi_param CONTENT_TYPE $content_type;
uwsgi_param CONTENT_LENGTH $content_length;
uwsgi_param REQUEST_URI $request_uri;
uwsgi_param PATH_INFO $document_uri;
uwsgi_param DOCUMENT_ROOT $document_root;
uwsgi_param SERVER_PROTOCOL $server_protocol;
uwsgi_param REQUEST_SCHEME $scheme;
uwsgi_param HTTPS $https if_not_empty;
uwsgi_param REMOTE_ADDR $remote_addr;
uwsgi_param REMOTE_PORT $remote_port;
uwsgi_param SERVER_PORT $server_port;
uwsgi_param SERVER_NAME $server_name;
uwsgi.ini：
[uwsgi]
chdir = /home/app
wsgi-file = ./NFC/wsgi.py
socket = 127.0.0.1:8000
master = true
processes = 1
threads = 2
uid = me
http = 127.0.0.1:8000 uwsgi.ini记录输出
$ cat /tmp/uwsgi.log
*** Starting uWSGI 2.0.12 (64bit) on [Wed Jan 13 12:09:44 2016] ***
compiled with version: 4.9.2 on 03 January 2016 21:09:04
os: Linux-4.1.13-boot2docker #1 SMP Fri Nov 20 19:05:50 UTC 2015
nodename: default
machine: x86_64
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /home/srg
detected binary path: /home/srg/.pyenv/versions/2.7.11/bin/uwsgi
chdir() to /home/srg
your processes number limit is 1048576
your memory page size is 4096 bytes
detected max file descriptor number: 1048576
lock engine: pthread robust mutexes
thunder lock: disabled (you can enable it with --thunder-lock)
uWSGI http bound on 127.0.0.1:8000 fd 7
uwsgi socket 0 bound to TCP address 127.0.0.1:38922 (port auto-assigned) fd 6
Python version: 2.7.11 (default, Jan 3 2016, 21:07:12) [GCC 4.9.2]
Python main interpreter initialized at 0x1d37300
python threads support enabled
your server socket listen backlog is limited to 100 connections
your mercy for graceful operations on workers is 60 seconds
mapped 166144 bytes (162 KB) for 2 cores
*** Operational MODE: threaded ***
WSGI app 0 (mountpoint='') ready in 0 seconds on interpreter 0x1d37300 pid: 173 (default app)
*** uWSGI is running in multiple interpreter mode ***
spawned uWSGI master process (pid: 173)
spawned uWSGI worker 1 (pid: 210, cores: 2)
spawned uWSGI http 1 (pid: 211)
SIGINT/SIGQUIT received...killing workers...
gateway "uWSGI http 1" has been buried (pid: 211)
worker 1 buried after 1 seconds
goodbye to uWSGI.
答案 0 :(得分：4)
使用uWSGI配置，尤其是：
socket = 127.0.0.1:8000
socket = :8000
答案 1 :(得分：0)
尝试将以下属性添加到.ini配置中。
chmod-socket = 666