Mysql 卡皮斯特拉诺“；cap部署：迁移”；失败，因为它尝试运行所有迁移，而不仅仅是挂起的迁移

我尝试使用“cap deploy:migrations”进行部署，因为我有3个新的迁移需要在live server上执行。结果是：

executing "cd /home/martin/public_html/project/releases/20110905131238; bundle exec rake RAILS_ENV=production  db:migrate"
    servers: ["50.56.82.190"]
    [50.56.82.190] executing command
 ** [out :: 50.56.82.190] ==  CreateUsers: migrating ====================================================
 ** [out :: 50.56.82.190] -- create_table(:users)
 ** [out :: 50.56.82.190] rake aborted!
 ** [out :: 50.56.82.190] An error has occurred, all later migrations canceled:
 ** [out :: 50.56.82.190] 
 ** [out :: 50.56.82.190] Mysql2::Error: Table 'users' already exists: CREATE TABLE `users` (`id` int(11) DEFAULT NULL auto_increment PRIMARY KEY, `name` varchar(255), `email` varchar(255), `created_at` datetime, `updated_at` datetime) ENGINE=InnoDB
 ** [out :: 50.56.82.190] 
 ** [out :: 50.56.82.190] Tasks: TOP => db:migrate
 ** [out :: 50.56.82.190] (See full trace by running task with --trace)
    command finished in 5816ms
failed: "sh -c 'cd /home/martin/public_html/project/releases/20110905131238; bundle exec rake RAILS_ENV=production  db:migrate'" on 50.56.82.190

在以前的部署中，我在live server上创建了一个工作数据库。我创建了3个新的迁移（由于使用新的gems carrierwave和rmagick上传图像），我现在就要部署。显然，cap部署：迁移尝试从第一个迁移运行所有迁移，而不仅仅是挂起的迁移

我的deploy.rb是：

require 'bundler/capistrano'
set :application, "otg.in"
set :domain, "otg.in"
set :user, "martin"
set :sudo_use, false
set :repository, "git@github.com:Martin118/otg.in.git"
set :local_repository,  '~/rails_projects/otg.in/.git'
set :port, 48000
set :deploy_to, "/home/martin/public_html/#{application}"
set :scm, :git
set :branch, "master"
default_run_options[:pty] = true
ssh_options[:forward_agent] = true

server "50.56.82.190", :app, :web, :db, :primary => true

after "deploy", "deploy:bundle_gems"
after "deploy:bundle_gems", "deploy:restart"
after "deploy:update_code", "deploy:migrate"
after "deploy", "deploy:cleanup"

# Passenger
namespace :deploy do
     task :bundle_gems do
    run "cd #{deploy_to}/current && bundle install vendor/gems"
  end
  task :start do ; end
  task :stop do ; end
  task :restart, :roles => :app, :except => { :no_release => true } do
    run "#{try_sudo} touch #{File.join(current_path,'tmp','restart.txt')}"
  end
end

require 'whenever/capistrano'

我运行rails 3.0.8，cap deploy:check告诉我“您似乎已经安装了所有必要的依赖项”

有什么想法吗？还是你需要更多的信息

谢谢你的帮助

live上的schema.rb是：

ActiveRecord::Schema.define(:version => 20110130000344) do

  create_table "businesses", :force => true do |t|
    t.string   "business_name"
    t.string   "postal_code"
    t.string   "business_email"
    t.string   "phone"
    t.string   "fax"
    t.string   "web"
    t.text     "description"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "user_id"
    t.text     "address"
    t.integer  "city_id"
    t.integer  "state_id"
  end

  create_table "cities", :force => true do |t|
    t.string   "name"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "state_id"
  end

  create_table "states", :force => true do |t|
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "name"
  end

  create_table "users", :force => true do |t|
    t.string   "name"
    t.string   "email"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "encrypted_password"
    t.string   "salt"
    t.boolean  "admin",              :default => false
  end

  add_index "users", ["email"], :name => "index_users_on_email", :unique => true

end

另一个更新：从schema_迁移中选择*；在我的开发数据库上，我可以看到：

+----------------+ |版本| +----------------+ | 20110112163009 | | 20110113141953 | | 20110113192958 | | 20110114214158 | | 20110115002206 | | 20110119100832 | | 20110120134443 | | 20110127171331 | | 20110127171427 | | 20110127171921 | | 20110127172903 | | 20110127183252 | | 20110129201949 | | 20110129204159 | | 20110129205833 | | 20110130000344 | | 20110808142844 | | 20110809133339 | | 20110809142303 | | 20110809154349 | | 20110810092306 | | 20110810093531 | | 20110812085010 | +----------------+

但使用我得到的MySQL workbench（仍然是开发数据库）检查这一点：

错误：

project\u development

schema\u migrations

：表数据不可编辑，因为没有为表定义主键

此外，productions数据库上的select*from schema_迁移只给了我一次迁移（在我尝试更新之前的最后一次）：

+----------------+ |版本| +----------------+ | 0 | | 20110130000344 | +----------------+

有人知道这里发生了什么吗

---

谢谢

解决方案是手动将缺少的迁移添加到schema_迁移中。不知何故，这张表似乎丢失了一些数据。无论如何，通过添加已直接使用“INSERT into schema_migrations（version）values（'2011…）；”完成的迁移，然后cap deploy:migrations从新迁移开始平稳运行。

转到服务器，查看schema_migrations表中的值。从schema_migrations中选择*是什么返回？@Mauricio和Dogbert:select*from schema|U迁移显示：+----------------------------------------+------------------------------------------------------------+---------------版本|+---------------+------------------------------++0 | | 20110130000344 |+-----------------------+2行（0.07秒）我还在live server上添加了来自live server 20110130000344的schema.rb，这确实是我添加导致问题的新迁移之前的最后一次迁移。