如何在rails应用程序中将sidekiq放入Docker？

Question

我正在使用rails,sidekiq和docker.

我的docker-compose.yml文件

sidekiq:
  build: .
  command: bundle exec sidekiq -C config/sidekiq.yml
  links:
    - db
    - redis

config/sidekiq.yml文件

:pidfile: ./tmp/pids/sidekiq.pid
:logfile: ./log/sidekiq.log
:queues:
  - default

运行后docker-compose up,sidekiq服务无法正常启动.

sidekiq_1 | No such file or directory @ rb_sysopen - /testapp/tmp/pids/sidekiq.pid
sidekiq_1 | /usr/local/bundle/gems/sidekiq-3.5.3/lib/sidekiq/cli.rb:365:in `initialize'
sidekiq_1 | /usr/local/bundle/gems/sidekiq-3.5.3/lib/sidekiq/cli.rb:365:in `open'
sidekiq_1 | /usr/local/bundle/gems/sidekiq-3.5.3/lib/sidekiq/cli.rb:365:in `write_pid'
sidekiq_1 | /usr/local/bundle/gems/sidekiq-3.5.3/lib/sidekiq/cli.rb:42:in `parse'
sidekiq_1 | /usr/local/bundle/gems/sidekiq-3.5.3/bin/sidekiq:12:in `<top (required)>'
sidekiq_1 | /usr/local/bundle/bin/sidekiq:16:in `load'
sidekiq_1 | /usr/local/bundle/bin/sidekiq:16:in `<main>'
testapp_sidekiq_1 exited with code 1

Answer 1

关于如何将Sidekiq放入Rails应用程序中的Docker的一般细节.供您参考,所有代码都可以在GitHub存储库中找到.

配置Redis容器

Sidekiq 依赖于Redis.首先,您需要一个Redis容器来运行.

在您的docker-compose.yml中,添加(作为示例):

redis:
  image: redis:4.0-alpine

Dockerize Sidekiq

与您的Rails应用程序共享相同的Dockerfile:

FROM ruby:2.3.3
RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
RUN mkdir /myapp
WORKDIR /myapp
ADD Gemfile /myapp/Gemfile
ADD Gemfile.lock /myapp/Gemfile.lock
RUN bundle install
ADD . /myapp

更新docker-compose.yml

sidekiq:
  build: .
  command: bundle exec sidekiq
  depends_on:
    - redis
  volumes:
    - .:/myapp
  env_file:
    - .env

环境文件.env如下所示:

JOB_WORKER_URL=redis://redis:6379/0

在docker-compose.yml中,将sidekiq添加到Rails应用程序的依赖项列表中:

web:
  build: .
  command: bundle exec rails s -p 3000 -b '0.0.0.0'
  volumes:
    - .:/myapp
  ports:
    - "3000:3000"
  depends_on:
    - db
    - sidekiq
  env_file:
    - .env

添加到您的Gemfile

gem 'sidekiq'
gem 'sidekiq-scheduler'
gem 'sidekiq-unique-jobs'
gem 'sinatra', require: nil

Sidekiq Web UI(下面显示的仪表板)需要sinatra gem

配置Sidekiq

添加文件config/initializers/sidekiq.rb:

sidekiq_config = { url: ENV['JOB_WORKER_URL'] }

Sidekiq.configure_server do |config|
  config.redis = sidekiq_config
end

Sidekiq.configure_client do |config|
  config.redis = sidekiq_config
end

添加Sidekiq工作人员

在目录app/workers /下,添加文件my_worker.rb:

class MyWorker
  include Sidekiq::Worker
  def perform(who, message)
    logger.info "Message from #{who} is #{message}"
  end
end

而已.现在,您可以在Rails中提交作业,例如,在控制器中.

MyWorker.perform_async(who, message)

工作人员将接收作业,并在日志文件中输出消息.

使用docker compose构建和运行

一切就绪后,您可以构建docker镜像并使用docker compose运行您的应用程序:

docker-compose build
docker-compose up

$ docker ps
CONTAINER ID        IMAGE                  COMMAND                  CREATED             STATUS              PORTS                    NAMES
c0515ac60a8b        hellosidekiq_web       "bundle exec rails..."   23 minutes ago      Up 23 minutes       0.0.0.0:3000->3000/tcp   hellosidekiq_web_1
080e33963e3a        hellosidekiq_sidekiq   "bundle exec sidekiq"    23 minutes ago      Up 23 minutes                                hellosidekiq_sidekiq_1
80d1c03f0573        redis:4.0-alpine       "docker-entrypoint..."   4 days ago          Up 23 minutes       6379/tcp                 hellosidekiq_redis_1
5915869772e4        postgres               "docker-entrypoint..."   4 days ago          Up 23 minutes       5432/tcp                 hellosidekiq_db_1

测试

现在打开以下URL以提交作业:

http://localhost:3000/job/submit/John/Prepare%20ye%20the%20way

在日志文件中,您将看到如下内容:

sidekiq_1  | 2017-11-13T17:08:45.876Z 1 TID-qw47g MyWorker JID-b7b6d39b0d5193cd01e97cb1 INFO: Message from John is Prepare ye the way

Sidekiq仪表板

如果您想使用Sidekiq仪表板,如下所示

您可以将路由添加到routes.rb

require 'sidekiq/web'
require 'sidekiq-scheduler/web'

Rails.application.routes.draw do
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
  mount Sidekiq::Web => '/sidekiq'

  get 'job/submit/:who/:message', to: 'job#submit'
end

希望能帮助到你.

顺便说一句,如果您想了解如何使用docker compose将Rails应用程序停靠,请参阅docker compose文档.

Answer 2

尝试安装卷.您的docker-compose文件应如下所示(PosgtreSQL作为数据库):

web:
  build: .
  volumes:
    - .:/myapp
  links:
    - db
    - redis
  ports:
    - "3000:3000"
  command: bundle exec rails server -b 0.0.0.0
sidekiq:
  build: .
  volumes:
    - .:/myapp
  links:
    - db
    - redis
  command: bundle exec sidekiq
db:
  image: postgres
redis:
  image: redis