Capistrano rails |在gitlab部署期间迁移时设置rails_env时，Rake :: Task的未定义方法`already_invoked'

我花了很多时间调试这个，我似乎没有接近答案 . 我还考虑在capistrano存储库中创建一个问题，但我并不认为这是capistrano本身的问题 .

上下文：

我在Gitlab EE中托管的私有存储库中有一个rails 5项目 . 我的repo完全配置为使用Gitlab CI，使用capistrano，capistrano / rails和capistrano / rvm自动部署 . 我有一个部署工作，我执行 cap review deploy （正在审查我要部署的环境）

一切都运行良好，直到我到达capistrano挂钩 deploy:migrate ，其中它打破了以下错误 .

错误：

(Backtrace restricted to imported tasks) 
  cap aborted!
  NoMethodError: undefined method `already_invoked' for <Rake::Task deploy:migrating => [set_rails_env]>:Rake::Task

  Tasks: TOP => deploy:migrate
  (See full trace by running task with --trace)
  The deploy has failed with an error: undefined method `already_invoked' for <Rake::Task deploy:migrating => [set_rails_env]>:Rake::Task

从我能够掌握的，似乎是rake任务设置rails_env（来自gem capistrano / rails）的问题 . 我已经跟踪了看是否capistrano / rvm没有从rvm设置正确的ruby，但事实并非如此 . cappistrano / rvm设置还可以 . 我想也许它与宝石版本或其他东西有关 .

我的弱补丁：

我没有添加任何新的迁移，使用capistrano / rails中的人员提供的可选参数修补它 .

set :conditionally_migrate, true

但它仍然失败（当有新的迁移时，大部分时间都是这样）

另外，从我的本地环境（使用 bundle exec cap review deploy ）使用它时，capistrano可以正常工作 .

提前致谢！希望你能帮我找到答案......

编辑：添加有关我的文件和堆栈的一些细节：

在我的Rails配置中，我使用git-ignored environment_variables.yml 文件，在其中设置capistrano配置文件中显示的所有 ENV['var'] 配置 . 我还保证在正在执行部署作业的运行程序中正确设置了这些 . （使用Gitlab Variables） .

这些CI作业使用安装在docker runner内的DigitalOcean droplet上的gitlab-runner服务，每个作业指定的图像 .

.gitlab-ci.yml

stages:
  - test
  - deploy
variables:
  MYSQL_DATABASE: "test_linting"
  MYSQL_ALLOW_EMPTY_PASSWORD: "yes"
  DB_NAME: 'test_linting'
  DB_USER: 'root'
  DB_PASS: ''
  DB_HOST: 'mysql'
services:
  - mysql
testing:
  image: heroku/ruby
  stage: test
  cache: 
    paths:
      - vendor/cache
  script:
    - bundle install --without=development production --jobs $(nproc) --path=vendor/cache
    - bundle exec rails db:create RAILS_ENV=test
    - bundle exec rails db:migrate RAILS_ENV=test
    - bundle exec rails test
  artifacts:
    paths:
      - coverage/
dev-deploy:
  image: ruby:2.3
  stage: deploy
  environment: 
    name: $CI_BUILD_REF_NAME
    url: http://dev.linting.com
  before_script:
    - gem install capistrano -v '~> 3.7'
    - gem install capistrano-rails
    - gem install capistrano-rvm
    - gem install slackistrano
  script:
    - cap $CI_BUILD_REF_NAME deploy
  only:
    - development
deploy:
  image: ruby:2.3
  stage: deploy
  environment: 
    name: $CI_BUILD_REF_NAME
    url: http://$CI_BUILD_REF_NAME.linting.com
  before_script:
    - gem install capistrano -v '~> 3.7'
    - gem install capistrano-rails
    - gem install capistrano-rvm
    - gem install slackistrano
  script:
    - cap $CI_BUILD_REF_NAME deploy
  only:
    - qa
    - staging
review_deploy:
  image: ruby:2.3
  stage: deploy
  environment: 
    name: review
    url: http://rev.linting.com
  when: manual
  before_script:
    - gem install capistrano -v '~> 3.7'
    - gem install capistrano-rails
    - gem install capistrano-rvm
    - gem install slackistrano
  script:
    - cap review deploy
  except:
    - development
    - qa
    - staging
    - master

config / deploy.rb

lock '~> 3.7'

env_file = "./config/environment_variables.yml"
if File.exists?(env_file)
  YAML.load_file(env_file)['capistrano'].each do |key, value|
    ENV[key.to_s] = value
  end
end

set :application, ENV['PROJECT_NAME']
set :repo_url, ENV['REPO_URL']

set :rvm_type, :user
set :rvm_ruby_version, '2.3.1'

set :conditionally_migrate, true

set :linked_files, %w{config/environment_variables.yml}
set :linked_dirs, %w{log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}

set :slackistrano, {
  klass: Slackistrano::CustomMessaging,
  channel: ENV['SLACK_CHANNEL'],
  webhook: ENV['SLACK_HOOK']
}

namespace :deploy do
  desc 'Restart application'
  task :restart do
    on roles(:app), in: :sequence, wait: 5 do
      execute :touch, release_path.join('tmp/restart.txt')
    end
  end

  desc 'Reset environment (rake db:reset)'
  task :db_reset do
    on roles(:app) do
      within "#{current_path}" do
        with rails_env: "#{fetch(:rails_env)}" do
          execute :rake, "db:migrate:reset"
          execute :rake, "db:seed"
        end
      end
    end
  end

  after :published, 'deploy:restart'
  after :finishing, 'deploy:cleanup'
end

config / deploy / review.rb

# Server definiton: (define ip in local env, and pass in gitlab)
server ENV['DEV_DROPLET_IP'], user: 'deploy', roles: %w{web app db}, password: ENV["SSH_DEPLOY_PASS"]

# ONLY WORKS IF IT WAS RUN BY THE GITLAB CI RUNNER
set :branch, ENV['CI_BUILD_REF_NAME'] ? ENV['CI_BUILD_REF_NAME'] : 'development'
# Capistrano Variables
set :stage, 'review'
set :rails_env, 'review'

# Variables for rev
set :commit, ENV['CI_BUILD_REF'] ? ENV['CI_BUILD_REF'][0..7] : 'local'
set :user, ENV['GITLAB_USER_EMAIL'] ? ENV['GITLAB_USER_EMAIL']: 'local user'

# Capistrano Deployment Route
set :deploy_to, "/home/deploy/rev.#{ENV['PROJECT_NAME']}"

namespace :deploy do
  desc 'Set review branch in the review server'
  task :set_review_branch do
    on roles(:app) do
      within "#{current_path}" do
        execute "echo '#{fetch(:branch)}@#{fetch(:commit)}' >> #{release_path.join('tmp/rev_branch')}"
        execute "echo '#{fetch(:user)}' >> #{release_path.join('tmp/rev_user')}"
      end
    end
  end

  after :publishing, 'deploy:set_review_branch'

  before :finishing, 'deploy:db_reset'
end

Capfile

require "capistrano/setup"
require "capistrano/deploy"

require 'capistrano/rvm'
require 'capistrano/rails'

require 'slackistrano/capistrano'
require_relative 'lib/custom_messaging'

require "capistrano/scm/git"
install_plugin Capistrano::SCM::Git

# Load custom tasks from `lib/capistrano/tasks` if you have any defined
Dir.glob("lib/capistrano/tasks/*.rake").each { |r| import r }

Gemfile

source 'https://rubygems.org'

gem 'rails', '~> 5.0.0', '>= 5.0.0.1'
gem 'puma', '~> 3.0'
gem 'sass-rails', '~> 5.0'
gem 'bootstrap-sass'
gem 'uglifier', '>= 1.3.0'
gem 'jquery-rails'
gem 'turbolinks', '~> 5'
gem 'jbuilder', '~> 2.5'

gem 'mysql2'
gem 'haml-rails'
gem 'devise'
gem 'paperclip', git: 'git://github.com/thoughtbot/paperclip.git'
gem 'administrate', '~> 0.3.0'
gem 'bourbon'
gem 'rails_real_favicon', '~> 0.0.6'
gem 'listen', '~> 3.0.5'

group :development, :test do
  gem 'byebug', platform: :mri
  gem 'minitest-rails'
  gem 'minitest-reporters'
  gem 'simplecov'
  gem 'simplecov-json', require: false
  gem 'factory_girl_rails'
  gem 'faker'
end

group :development do
  gem 'annotate'
  gem 'better_errors'
  gem 'binding_of_caller'

  # Capistrano for Deployments
  gem 'capistrano', '~> 3.7'
  gem 'capistrano-rvm'
  gem 'capistrano-rails'
  gem 'slackistrano'

  gem 'web-console'
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]