其他信息

Question

我正在尝试使用Capistrano在我的生产服务器上安装'mysql2'gem。

我想在开发中使用SQLite，在生产中使用MySQL。

我在Windows 7机器上开发，生产使用Ubuntu。

当我在我的开发机器上运行bundle install时，它会安装MySQL2。

当Capistrano在我的生产机器上运行它时，它甚至在输出中都没有提及。

当我在我的生产机器上直接在shell上运行相同的命令时，它也没有提到gem。

我也发现没有安装gem 'therubyracer', :platforms => :ruby。我在mysql2条目之后添加了这个。我希望这两者是相关的。在添加therubyracer之前，mysql2没有工作。

由于以上所有原因，我在尝试查看我的网站时遇到以下错误：

请安装mysql2适配器：gem install activerecord-mysql2-adapter（mysql2不是捆绑包的一部分。将其添加到Gemfile。）

其他信息

我希望下面包含的信息量比痛苦更有用。

的Gemfile

我很欣赏我可以将mysql2置于'生产'中，但这不起作用。

source 'http://rubygems.org'

gem 'rails', '3.1.1'
gem 'nokogiri'
gem 'bcrypt-ruby'
gem 'faker'
gem 'will_paginate'
gem 'capistrano'
gem 'capistrano-ext'
gem 'mysql2', "~> 0.3"
gem 'therubyracer', :platforms => :ruby
gem 'sqlite3'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.1.4'
  gem 'coffee-rails', '~> 3.1.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

group :test do
  # Pretty printed test output
  gem 'turn', :require => false
end

Capistrano Bundle Install命令的输出

  * executing "cd /home/gannicott.co.uk/production/listen/www/releases/20120223225131 && bundle install --gemfile /home/gannicott.co.uk/prod
uction/listen/www/releases/20120223225131/Gemfile --path /home/gannicott.co.uk/production/listen/www/shared/bundle --deployment --without de
velopment test"
    servers: ["homer.gannicott.co.uk"]
    [homer.gannicott.co.uk] executing command
    [homer.gannicott.co.uk] sh -c 'cd /home/gannicott.co.uk/production/listen/www/releases/20120223225131 && bundle install --gemfile /home/
gannicott.co.uk/production/listen/www/releases/20120223225131/Gemfile --path /home/gannicott.co.uk/production/listen/www/shared/bundle --dep
loyment --without development test'
 ** [out :: homer.gannicott.co.uk] Installing rake (0.9.2.2)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing multi_json (1.1.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing activesupport (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing builder (3.0.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing i18n (0.6.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing activemodel (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing erubis (2.7.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rack (1.3.6)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rack-cache (1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rack-mount (0.8.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rack-test (0.6.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing hike (1.2.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing tilt (1.3.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing sprockets (2.0.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing actionpack (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing mime-types (1.17.2)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing polyglot (0.3.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing treetop (1.4.10)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing mail (2.3.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing actionmailer (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing arel (2.2.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing tzinfo (0.3.31)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing activerecord (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing activeresource (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing highline (1.6.11)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing net-ssh (2.3.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing net-scp (1.0.4)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing net-sftp (2.0.5)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing net-ssh-gateway (1.1.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing capistrano (2.11.2)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing capistrano-ext (1.2.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing coffee-script-source (1.2.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing execjs (1.3.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing coffee-script (2.2.0)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rack-ssl (1.3.2)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing json (1.6.5)
 ** [out :: homer.gannicott.co.uk] with native extensions
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rdoc (3.12)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing thor (0.14.6)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing railties (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing coffee-rails (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing faker (1.0.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing jquery-rails (1.0.19)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Using bundler (1.0.21)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing rails (3.1.1)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing sass (3.1.15)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing sass-rails (3.1.5)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing uglifier (1.2.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Installing will_paginate (3.0.3)
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Updating .gem files in vendor/cache
 ** [out :: homer.gannicott.co.uk]
 ** [out :: homer.gannicott.co.uk] Your bundle is complete! It was installed into /home/gannicott.co.uk/production/listen/www/shared/bundle
 ** [out :: homer.gannicott.co.uk]
    command finished in 12924ms

capistrano的deploy.rb

require 'bundler/capistrano'
require 'capistrano/ext/multistage'
# Based on: http://guides.beanstalkapp.com/deployments/deploy-with-capistrano.html
set :application, "listen_later"

set :scm, :git
set :repository, "repos location"
set :scm_passphrase, "passphrase"

set :user, "username"

set :stages, ["staging", "production"]
set :default_stage, "staging"

# The following needs to be added to avoid a failure (http://discuss.joyent.com/viewtopic.php?id=27326)
default_run_options[:pty] = true

namespace :deploy do
  desc "Tell Passenger to restart the app."
  task :restart do
    run "touch #{current_path}/tmp/restart.txt"
  end
end

# Removed --silent so I can see what's going on
set :bundle_flags,    "--deployment"

capistrano的生产部署文件

server "homer.gannicott.co.uk", :app, :web, :db, :primary => true
set :deploy_to, "/home/gannicott.co.uk/production/listen/www"

数据库配置文件

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
development:
  adapter: sqlite3
  database: db/development.sqlite3
  pool: 5
  timeout: 5000

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  adapter: sqlite3
  database: db/test.sqlite3
  pool: 5
  timeout: 5000

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: databasename
  pool: 5
  username: username
  password: password
  #socket: **/opt/local/var/run/mysql5/mysqld.sock**

#  adapter: sqlite3
#  database: db/production.sqlite3
#  pool: 5
#  timeout: 5000

干杯！

Answer 1

全部排序。虽然这是一个解决方法，但我并不完全满意。

研究

Google的更多搜索引导我访问此页面：

http://redmine.autotelik.co.uk/blogs（搜索'mysql2'并找到相关部分）

这导致我... Stack Overflow（当然！）：

Make bundler use different gems for different platforms

这反过来又让我：

https://github.com/carlhuda/bundler/issues/646

问题

在Windows上运行Bundler时，它包含Windows版本mysql2的条目。但是，这与Linux上的要求不同。因此，Gemfile.lock文件不适合在Linux上使用。

解决方案

目标是在生产服务器上生成Bundler生成的Gemfile.lock文件。从我读过的内容来看，通常不建议这样做。那说，要实现这个......

我不再在我的git存储库中包含Gemfile.lock文件：

echo 'Gemfile.lock' >> .gitignore

我已从git中删除了该文件：

git rm Gemfile.lock
git commit -am "Removing Gemfile.lock to cope with Windows and Linux differences"
git push

我告诉Capistrano不要在部署模式下运行，只需在我的config/deploy.rb添加以下行：

set :bundle_flags,    ""

您可能希望在引号中包含--quiet标记，但在此经验之后，我很想知道在部署时安装了什么。

现在，当我运行cap production deploy时，它每次都会重新生成Gemfile.lock文件。这意味着我的生产服务器现在使用了正确版本的mysql2。

我想这可以改进，但现在它对我有用。

希望有一天能帮到某人。

Answer 2

我对therubyracer gem有同样的问题。在Windows上编码，在linux上部署。

在我的Gemfile中，我使用：

group :production do
  gem 'libv8', '= 3.3.10.4'
  gem 'therubyracer'
end

在Windows上，我用：

生成Gemfile.lock

bundle install --without production

therubyracer取决于libv8，并且不应该明确说明但是当'bundle install'解决了对windows的依赖时，windows上的libv8版本可能与linux上的libv8不同。我被困在这个版本的问题中，找出问题到底是什么真的很棘手！

生成Gemfile.lock :(缩短）

GEM  
  specs:
    libv8 (3.3.10.4)
    therubyracer (0.10.2)
      libv8 (~> 3.3.10)    

PLATFORMS
  x86-mingw32

DEPENDENCIES  
  libv8 (= 3.3.10.4)
  therubyracer

然后，这完全没有任何脚本或没有版本Gemfile.lock

bundle install --deployment

Answer 3

现在可以在 Bundler版本1.1.5

中使用

唯一需要注意的是，它不会自动在平台部分下添加红宝石。好消息是它也不会删除该行。

除此之外，它还将在平台特定版本之前列出gem的平台无关版本。

PLATFORMS
  ruby
  x86-mingw32

在你的情况下你应该看到这样的东西：

mysql2 (0.3.11)
mysql2 (0.3.11-x86-mingw32)

不只是：

mysql2 (0.3.11-x86-mingw32)

使用新版本的bundler。

Bundler在我的'生产'服务器上运行时忽略了MySQL2 gem的安装

其他信息

的Gemfile

Capistrano Bundle Install命令的输出

capistrano的deploy.rb

capistrano的生产部署文件

数据库配置文件

3 个答案:

研究

问题

解决方案