我正在尝试使用docker-compose设置docker环境 rails（运行puma），nginx，mysql，elasticsearch。
但是当我尝试使用HTTParty.get('http://lvh.me:8888')
它失败了，我收到了一条错误消息
Errno :: ECONNREFUSED（无法打开到lvh.me:8888的TCP连接 （连接被拒绝 - 连接（2）“lvh.me”端口8888））
我的Docker-Compose文件：
version: '3.3'
services:
beecomredis:
image: redis:4.0.8
ports:
- "6379:6379"
beecomdb:
image: mysql:5.7.21
volumes:
- ./mysql_data/mysql:/var/lib/mysql
ports:
- "6603:3306"
beecomec:
image: docker.elastic.co/elasticsearch/elasticsearch:6.2.2
#container_name: elasticsearch
environment:
- http.cors.enabled=true
- http.cors.allow-origin="*"
- node.master=true
- cluster.name=docker-cluster
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
- xpack.security.enabled=false
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- ./elastic_data/elasticsearch/data:/usr/share/elasticsearch/data
- ./elastic_data/elasticsearch/logs:/usr/share/elasticsearch/logs
ports:
- '9200:9200'
- '9300:9300'
beecomnginx:
build:
context: .
dockerfile: Dockerfile-nginx
ports:
- "8888:80"
beecom:
build: .
command: foreman start
volumes:
- .:/beecom
expose:
- "3000"
depends_on:
- beecomdb
- beecomredis
- beecomec
- beecomnginx
我的nginx.conf文件：
upstream rails_app {
server beecom:3000;
}
server {
# define your domain
server_name www.example.com;
# define the public application root
root $RAILS_ROOT/public;
index index.html;
# define where Nginx should write its logs
access_log $RAILS_ROOT/log/nginx.access.log;
error_log $RAILS_ROOT/log/nginx.error.log;
# deny requests for files that should never be accessed
location ~ /\. {
deny all;
}
location ~* ^.+\.(rb|log)$ {
deny all;
}
# serve static (compiled) assets directly if they exist (for rails production)
location ~ ^/(assets|images|javascripts|stylesheets|swfs|system)/ {
try_files $uri @rails;
access_log off;
gzip_static on;
# to serve pre-gzipped version
expires max;
add_header Cache-Control public;
add_header Last-Modified "";
add_header ETag "";
break;
}
# send non-static file requests to the app server
location / {
try_files $uri @rails;
}
location @rails {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://rails_app;
}
}
我的DockerFile：
FROM ruby:2.5.0-slim
RUN apt-get update && apt-get install -y --no-install-recommends \
build-essential \
default-libmysqlclient-dev \
mysql-client \
libmagickwand-dev \
imagemagick \
curl \
git \
gnupg2 \
/sources.list.d/yarn.list \
&& apt-get clean \
&& rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN curl -sL https://deb.nodesource.com/setup_9.x | bash - && apt-get install -y --no-install-recommends nodejs
RUN gem update --system
RUN mkdir -p /beecom
WORKDIR /beecom
COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock
COPY package.json package.json
ENV RAILS_ENV development
ENV RACK_ENV development
RUN bundle install
RUN set :environment, 'development'
COPY config/puma.rb config/puma.rb
COPY . /beecom
EXPOSE 3000
CMD [ "foreman", "start" ]
最后我的Dockerfile-nginx：
# Base image:
FROM nginx
# Install dependencies
RUN apt-get update -qq && apt-get -y install apache2-utils
# establish where Nginx should look for files
ENV RAILS_ROOT /beecom
# Set our working directory inside the image
RUN mkdir -p $RAILS_ROOT
WORKDIR $RAILS_ROOT
# create log directory
RUN mkdir log
# copy over static assets
COPY ./public public/
# Copy Nginx config template
COPY ./config/nginx.conf /tmp/docker.nginx
# substitute variable references in the Nginx config template for real values from the environment
# put the final config in its place
RUN envsubst '$RAILS_ROOT' < /tmp/docker.nginx > /etc/nginx/conf.d/default.conf
RUN rm -rf /etc/nginx/sites-available/default
ADD config/nginx.conf /etc/nginx/sites-enabled/nginx.conf
EXPOSE 80
# Use the "exec" form of CMD so Nginx shuts down gracefully on SIGTERM (i.e. `docker stop`)
CMD [ "nginx", "-g", "daemon off;" ]
哦，我忘了发布我的Puma配置：
# Puma can serve each request in a thread from an internal thread pool.
# The `threads` method setting takes two numbers a minimum and maximum.
# Any libraries that use thread pools should be configured to match
# the maximum value specified for Puma. Default is set to 5 threads for minimum
# and maximum, this matches the default thread size of Active Record.
#
threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 }.to_i
threads threads_count, threads_count
# Specifies the `port` that Puma will listen on to receive requests, default is 3000.
#
port ENV.fetch("PORT") { 3000 }
# Specifies the `environment` that Puma will run in.
#
environment ENV.fetch("RAILS_ENV") { "development" }
# Specifies the number of `workers` to boot in clustered mode.
# Workers are forked webserver processes. If using threads and workers together
# the concurrency of the application would be max `threads` * `workers`.
# Workers do not work on JRuby or Windows (both of which do not support
# processes).
#
workers ENV.fetch("WEB_CONCURRENCY") { 3 }
# Use the `preload_app!` method when specifying a `workers` number.
# This directive tells Puma to first boot the application and load code
# before forking the application. This takes advantage of Copy On Write
# process behavior so workers use less memory. If you use this option
# you need to make sure to reconnect any threads in the `on_worker_boot`
# block.
#
# preload_app!
# The code in the `on_worker_boot` will be called if you are using
# clustered mode by specifying a number of `workers`. After each worker
# process is booted this block will be run, if you are using `preload_app!`
# option you will want to use this block to reconnect to any threads
# or connections that may have been created at application boot, Ruby
# cannot share connections between processes.
#
# on_worker_boot do
# ActiveRecord::Base.establish_connection if defined?(ActiveRecord)
# end
# Allow puma to be restarted by `rails restart` command.
plugin :tmp_restart
答案 0 :(得分：0)
最后我发现在我的config/puma.rb文件中添加了一个绑定。
bind 'tcp://0.0.0.0:8888'
解决了我的问题。
更新： 最后，我发现修复此问题的最佳方法是更改我的nginx.config，如下所示：
upstream MyAppUpstream_beecommercial {
server beecom:3000;
}
server {
listen 443 ssl;
listen 80;
server_name lvh.me
keepalive_timeout 900;
ssl_certificate /[key];
ssl_certificate_key /[key];
# define the public application root
root $RAILS_ROOT/public;
index index.html;
# define where Nginx should write its logs
access_log $RAILS_ROOT/log/nginx.access.log;
error_log $RAILS_ROOT/log/nginx.error.log;
# deny requests for files that should never be accessed
location ~ /\. {
deny all;
}
location ~* ^.+\.(rb|log)$ {
deny all;
}
# serve static (compiled) assets directly if they exist (for rails production)
location ~ ^/(assets|images|javascripts|stylesheets|swfs|system)/ {
try_files $uri @rails;
access_log off;
gzip_static on;
# to serve pre-gzipped version
expires max;
add_header Cache-Control public;
add_header Last-Modified "";
add_header ETag "";
break;
}
# send non-static file requests to the app server
location / {
try_files $uri @rails;
}
location @rails {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect off;
proxy_pass http://MyAppUpstream_beecommercial;
}
}