Capistrano：puma：更新 gem 版本后无法识别开始

编程问答 2022-05-31

问题描述

我最近将我的 Ruby on Rails 应用程序从 6.0 升级到 6.1。在这样做时，我决定升级 capistrano 和 puma。我正在使用以下宝石：

  capistrano-bundler (2.0.1)
  capistrano-rails (1.6.1)
  capistrano-rvm (0.1.2)
  capistrano3-puma (5.0.2) (was 3.1.1)
  puma (5.1.1) (was 3.10.0)

现在，当我尝试运行 capistrano 任务时，我得到以下内容

** Invoke load:defaults (first_time)
** Execute load:defaults
cap aborted!
Don't know how to build task 'start' (See the list of available tasks with `cap --tasks`)

即使是 cap --tasks 也会产生相同的信息。

我试过 cap staging puma:restart 并得到 Don't know how to build task 'puma:start'。

这是我的capfile：

# Load DSL and Setup Up Stages
require 'capistrano/setup'
require 'capistrano/deploy'

require 'capistrano/rails'
require 'capistrano/bundler'
require 'capistrano/rvm'
require 'capistrano/puma'

install_plugin Capistrano::Puma

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

我的 deploy.rb 没有改变，是不是新版本不兼容？

set :repo_url,'git@ssh.dev.azure.com:v3/orgname/reponame/repo'
set :application,'projectname-prod'
set :user,'deploy'
set :puma_threads,[4,16]
set :puma_workers,0

# 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),keys: %w(~/.ssh/id_rsa.pub) }
set :puma_preload_app,true
set :puma_worker_timeout,nil
set :puma_init_active_record,true  # Change to false when not using ActiveRecord

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/#{fetch(:branch)}`
        puts "WARNING: HEAD is not the same as origin/develop"
        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

set :linked_files,fetch(:linked_files,[]).push("config/master.key")

更新

这是运行 cap staging deploy --trace 时的跟踪：

** Invoke staging (first_time)
** Execute staging
** Invoke load:defaults (first_time)
** Execute load:defaults
cap aborted!
Don't know how to build task 'start' (See the list of available tasks with `cap --tasks`)
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task_manager.rb:59:in `[]'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:405:in `[]'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/lib/capistrano/dsl/task_enhancements.rb:7:in `before'
config/deploy.rb:46:in `block in <top (required)>'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task_manager.rb:232:in `in_namespace'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/dsl_definition.rb:141:in `namespace'
config/deploy.rb:37:in `<top (required)>'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/lib/capistrano/setup.rb:27:in `load'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/lib/capistrano/setup.rb:27:in `block (3 levels) in <top (required)>'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/lib/capistrano/configuration/variables.rb:32:in `untrusted!'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/2.6.0/delegate.rb:83:in `method_missing'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/lib/capistrano/setup.rb:26:in `block (2 levels) in <top (required)>'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `block in execute'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `each'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `execute'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/2.6.0/monitor.rb:230:in `mon_synchronize'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:199:in `invoke_with_call_chain'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:188:in `invoke'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:160:in `invoke_task'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block (2 levels) in top_level'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `each'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block in top_level'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:125:in `run_with_threads'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:110:in `top_level'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:83:in `block in run'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:186:in `standard_exception_handling'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:80:in `run'
/Users/username/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/lib/capistrano/application.rb:14:in `run'
/Users/tibsarsoftware/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/capistrano-3.15.0/bin/cap:3:in `<top (required)>'
/Users/username/.rbenv/versions/2.6.3/bin/cap:23:in `load'
/Users/username/.rbenv/versions/2.6.3/bin/cap:23:in `<main>'

解决方法

如果您查看您之前使用的版本与您现在使用的版本 (https://github.com/seuros/capistrano-puma/compare/v3.1.1...v5.0.2) 的差异，您可以看到 puma:start 命令（连同其他）显然已从主 puma.rake 中删除，而是分别移至可插拔适配器以用于守护进程和 systemd。从自述文件 (https://github.com/seuros/capistrano-puma#usage) 来看，Puma 5+ 只允许使用 systemd（请参阅 https://github.com/puma/puma/pull/2170），因此您必须将 install_plugin Capistrano::Puma::Systemd 添加到您的 Capistrano 设置中（当然还要确保您的设置可以正常运行 systemd）。

如果您不能/不想使用 systemd 并想坚持使用 Puma 的经典守护程序，则必须使用 Puma 4（gem 'puma','< 5' 中的 Gemfile），直到您准备升级。

capistranocapistrano3pumaruby-on-rails

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