当我在heroku上部署我的rails应用程序时，“验证部署...”的步骤将不会停止。最终无法部署。 看起来像： .....
Counting objects: 63, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (50/50), done.
Writing objects: 100% (63/63), 16.07 KiB | 0 bytes/s, done.
Total 63 (delta 2), reused 55 (delta 2)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.2.4
remote: -----> Installing dependencies using bundler 1.9.7
remote: Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote: Fetching gem metadata from https://ruby.taobao.org/...........
remote: Fetching version metadata from https://ruby.taobao.org/..
remote: Installing i18n 0.7.0
.
.
.
.
remote: Installing rack-test 0.6.3
remote: Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
remote: /tmp/build_79f9308360752d0592fbc2b468f9b84c/vendor/ruby-2.2.4/bin/ruby -r ./siteconf20160229-317-1hewtf6.rb extconf.rb
remote: checking for sqlite3.h... no
remote: sqlite3.h is missing. Try 'port install sqlite3 +universal',
remote: 'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
remote: and check your shared library search path (the
remote: location where your sqlite3 shared library is located).
remote: *** extconf.rb failed ***
remote: Could not create Makefile due to some reason, probably lack of necessary
remote: libraries and/or headers. Check the mkmf.log file for more details. You may
remote: need configuration options.
remote: Provided configuration options:
remote: --with-opt-dir
remote: --without-opt-dir
remote: --with-opt-include
remote: --without-opt-include=${opt-dir}/include
remote: --with-opt-lib
remote: --without-opt-lib=${opt-dir}/lib
remote: --with-make-prog
remote: --without-make-prog
remote: --srcdir=.
remote: --curdir
remote: --ruby=/tmp/build_79f9308360752d0592fbc2b468f9b84c/vendor/ruby-2.2.4/bin/$(RUBY_BASE_NAME)
remote: --with-sqlite3-dir
remote: --without-sqlite3-dir
remote: --with-sqlite3-include
remote: --without-sqlite3-include=${sqlite3-dir}/include
remote: --with-sqlite3-lib
remote: --without-sqlite3-lib=${sqlite3-dir}/lib
remote: extconf failed, exit code 1
remote: Gem files will remain installed in /tmp/build_79f9308360752d0592fbc2b468f9b84c/vendor/bundle/ruby/2.2.0/gems/sqlite3-1.3.11 for inspection.
remote: Results logged to /tmp/build_79f9308360752d0592fbc2b468f9b84c/vendor/bundle/ruby/2.2.0/extensions/x86_64-linux/2.2.0-static/sqlite3-1.3.11/gem_make.out
remote: Installing uglifier 2.7.2
remote: Installing rdoc 4.2.2
remote: Installing sprockets 3.5.2
remote: Installing coffee-script 2.4.1
remote: Installing mail 2.6.3
remote: Installing activesupport 4.2.5.1
remote: Verifying deploy...............................................................................................................................................................................................................................................................................................................................................................................................................................................
error: RPC failed; result=18, HTTP code = 200
fatal: The remote end hung up unexpectedly
fatal: The remote end hung up unexpectedly
Everything up-to-date
“验证部署”这一步花了我很长时间，最后失败了。 我该怎么办？
答案 0 :(得分：4)
您正在使用SQLite，如下所示：
remote: checking for sqlite3.h... no
remote: sqlite3.h is missing. Try 'port install sqlite3 +universal',
remote: 'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
remote: and check your shared library search path (the
remote: location where your sqlite3 shared library is located).
Heroku不支持SQLite，如here所述。链接的文章还指出：
在开发中使用与生产中相同的数据库非常重要，因此您需要在本地安装PostgreSQL数据库。
如果要在Heroku上部署，则需要切换到PostgreSQL。我不建议您遵循Praveen George的建议。 SQLite允许PostgreSQL没有的东西。因此，在开发过程中，您可能会认为一切都很好，只是发现它在Heroku上遍布各处。
答案 1 :(得分：0)
Heroku部署步骤
heroku login
heroku create
git remote -v
heroku git:remote -a app_name(which u get when u do 3rd step)
git push heroku master
确保你的Gemfile有
gem 'pg'
group :production do
gem 'rails_12factor'
end
重置数据库
heroku pg:reset DATABASE_URL
heroku run rake db:migrate db:seed
重命名Heroku应用程序
heroku apps:rename newname --app oldname
如果资产没有加载
rake assets:precompile
git add
git commit
git push
答案 2 :(得分：-1)
在开发，测试和使用中使用PSQL生产（推荐配置）
group :development, :test do
gem 'pg'
end
或者只需在宝石文件的开头添加波纹管代码即可。
gem 'pg'
<强> ############################################ ###################################
<方法2在开发，测试和使用中使用SQLite生产中的PSQL（不推荐配置）
重要提示： 不要这样做。你将在未来遇到问题。在生产和开发中使用相同的数据库。 For more details see this Stackoverflow post
我认为在你的gemfile中，你可能已经指定在生产和开发环境中使用SQLite。这导致Heroku部署中的问题，因为Heroku不支持在生产中使用SQLite。所以你必须修改你的宝石文件部分关于你的数据库宝石，如下所示，但我仍然提醒你在开发和生产中使用不同的数据库不建议。
gem 'sqlite3', :group => [:development, :test]
group :production do
gem 'thin'
gem 'pg'
end
按上述方式编辑Gemfile