ruby-on-rails - 在单独的服务器上设置 resque/redis

Question

我正在将我的 redis 和 resque 工作人员拆分到一台新机器上。以前它们都在一台机器上运行 - 成功。

我使用 cap 进行部署，在成功部署后，当我尝试排队重新请求作业时，我在 rails 日志中得到了这个:

==> shared/log/production.log <==
I, [2016-05-28T05:43:03.924222 #5769]  INFO -- : Started GET "/photos/24803/rotate/180" for 127.0.0.1 at 2016-05-28 05:43:03 +0000
I, [2016-05-28T05:43:04.080861 #5769]  INFO -- : Processing by PhotosController#rotate as HTML
I, [2016-05-28T05:43:04.081274 #5769]  INFO -- :   Parameters: {"id"=>"24803", "degrees"=>"180"}
D, [2016-05-28T05:43:04.183430 #5769] DEBUG -- :   Photo Load (1.4ms)  SELECT  `photos`.* FROM `photos` WHERE `photos`.`id` = 24803 LIMIT 1
I, [2016-05-28T05:43:04.250844 #5769]  INFO -- : Completed 500 Internal Server Error in 169ms (ActiveRecord: 22.1ms)
F, [2016-05-28T05:43:04.256268 #5769] FATAL -- : 
Redis::CannotConnectError (Error connecting to Redis on localhost:6379 (Errno::ECONNREFUSED)):
  app/models/photo.rb:109:in `rotate'
  app/controllers/photos_controller.rb:106:in `rotate'

所以我认为我的应用服务器没有得到它应该去“后端服务器”处理这些东西。

我的配置:

我有运行 op 192.168.2.102 的应用服务器 - 除了 redis 之外，所有东西都安装在那里。 Redis安装在192.168.2.103

配置/部署.rb:

server '192.168.2.102', port: 22, roles: [:web, :app], primary: true
server '192.168.2.103', port: 22, roles: [:db, :resque_worker, :resque_scheduler]


set :repo_url,        'xxx'
set :application,     'xxx'
set :user,            'deploy'
set :puma_threads,    [4, 16]
set :puma_workers,    0
set :workers, { "import" => 1, "utility" => 1 }
set :resque_environment_task, true

# Don't change these unless you know what you're doing
set :pty,             true
set :use_sudo,        false
set :stage,           :production
set :deploy_via,      :remote_cache
set :deploy_to,       "/home/#{fetch(:user)}/apps/#{fetch(:application)}"
set :puma_bind,       "unix://#{shared_path}/tmp/sockets/#{fetch(:application)}-puma.sock"
set :puma_state,      "#{shared_path}/tmp/pids/puma.state"
set :puma_pid,        "#{shared_path}/tmp/pids/puma.pid"
set :puma_access_log, "#{release_path}/log/puma.error.log"
set :puma_error_log,  "#{release_path}/log/puma.access.log"
set :ssh_options,     { forward_agent: true, user: fetch(:user) }
set :puma_preload_app, true
set :puma_worker_timeout, nil
set :puma_init_active_record, true  # Change to false when not using ActiveRecord

## Defaults:
set :scm,           :git
set :branch,        :master
# set :format,        :pretty
# set :log_level,     :debug
# set :keep_releases, 5

## Linked Files & Directories (Default None):
#set :linked_files, %w{db/production.sqlite3}
set :linked_dirs,  %w{ log tmp/pids tmp/cache tmp/sockets public/system }
#set :bundle_binstubs, nil

namespace :puma do
  desc 'Create Directories for Puma Pids and Socket'
  task :make_dirs do
    on roles(:app) do
      execute "mkdir #{shared_path}/tmp/sockets -p"
      execute "mkdir #{shared_path}/tmp/pids -p"
    end
  end

  before :start, :make_dirs
end

namespace :deploy do
  desc "Make sure local git is in sync with remote."
  task :check_revision do
    on roles(:app) do
      unless `git rev-parse HEAD` == `git rev-parse origin/master`
        puts "WARNING: HEAD is not the same as origin/master"
        puts "Run `git push` to sync changes."
        exit
      end
    end
  end

  desc 'Initial Deploy'
  task :initial do
    on roles(:app) do
      before 'deploy:restart', 'puma:start'
      invoke 'deploy'
    end
  end

  desc 'Restart application'
  task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      invoke 'puma:restart'
    end
  end

  before :starting,     :check_revision
  after  :finishing,    :compile_assets
  after  :finishing,    :cleanup
  after  :finishing,    :restart




end
after "deploy:restart", "resque:restart"
# ps aux | grep puma    # Get puma pid
# kill -s SIGUSR2 pid   # Restart puma
# kill -s SIGTERM pid   # Stop puma

配置/resque.yml:

development: localhost:6379
test: localhost:6379
production: 192.168.2.103:6379

配置/初始化程序/resque.rb

rails_root = ENV['RAILS_ROOT'] || File.dirname(__FILE__) + '/../..'
rails_env = ENV['RAILS_ENV'] || 'development'

resque_config = YAML.load_file(rails_root + '/config/resque.yml')
Resque.redis = resque_config[rails_env]

Resque.logger = MonoLogger.new(File.open("#{Rails.root}/log/resque.log", "w+"))
Resque.logger.formatter = Resque::QuietFormatter.new

配置/初始化程序/redis.rb:

$redis = Redis.new(:host => ENV["REDIS_HOST"], :port => ENV["REDIS_PORT"])

我不确定我是否需要最后一个文件...

如果您认为是我的 connectio 设置有问题，那就别再想了(关于那个……)。首先，Resque 甚至没有尝试连接到正确的 redis。其次，当我这样做时:

...在 192.168.2.103 上:

deploy@raspberrypi:~/apps/phototank $ netstat -nlpt | grep 6379
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:6379            0.0.0.0:*               LISTEN      -               
tcp6       0      0 :::6379                 :::*                    LISTEN      -  

...在 192.168.2.102 上:

deploy@raspberrypi:~/apps/phototank $ redis-cli -h 192.168.2.103 ping
PONG

____编辑____

如果我跑

RAILS_ENV=development rails s

在我的开发机器上一切正常...到底是怎么回事？!？？

Answer 1

问题定位:

配置/初始化程序/resque.rb

rails_root = ENV['RAILS_ROOT'] || File.dirname(__FILE__) + '/../..'
rails_env = ENV['RAILS_ENV'] || 'development'

resque_config = YAML.load_file(rails_root + '/config/resque.yml')
Resque.redis = resque_config[rails_env]

Resque.logger = MonoLogger.new(File.open("#{Rails.root}/log/resque.log", "w+"))
Resque.logger.formatter = Resque::QuietFormatter.new

如果没有定义任何其他内容，第二行将环境设置为开发...在那之后的行中设置环境...

我只是删除了前两行