升級到Ubuntu 18.04后的Rails Console錯誤

Question

從ubuntu 16.04升級到ubuntu 18.04后，從rails項目的根目錄運行rails console時收到以下錯誤。 只有控制台似乎受到了影響，我能夠毫無問題地啟動puma服務器。

Running via Spring preloader in process 23887
/home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require': libreadline.so.6: cannot open shared object file: No such file or directory - /home/user/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/x86_64-linux/readline.so (LoadError)
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `block in require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:258:in `load_dependency'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/irb/completion.rb:10:in `<top (required)>'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `block in require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:258:in `load_dependency'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/commands/console/console_command.rb:2:in `<top (required)>'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `block in require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:258:in `load_dependency'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command/behavior.rb:82:in `block (2 levels) in lookup'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command/behavior.rb:78:in `each'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command/behavior.rb:78:in `block in lookup'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command/behavior.rb:77:in `each'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command/behavior.rb:77:in `lookup'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command.rb:68:in `find_by_namespace'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/command.rb:42:in `invoke'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/railties-5.1.6/lib/rails/commands.rb:16:in `<top (required)>'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `block in require'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:258:in `load_dependency'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:292:in `require'
    from /home/user/dev/projects/SRTrackerMySQL/bin/rails:9:in `<top (required)>'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:286:in `load'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:286:in `block in load'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:258:in `load_dependency'
    from /home/user/.rvm/gems/ruby-2.4.1/gems/activesupport-5.1.6/lib/active_support/dependencies.rb:286:in `load'
    from /home/user/.rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:59:in `require'
    from /home/user/.rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:59:in `require'
    from -e:1:in `<main>'

我已經運行了bundle install並在Rails 5.1.6和Rails 5.2新Rails項目中進行了嘗試

我也嘗試過運行RAILS_ENV=production bundle exec rails console

我正在使用Ruby版本：

ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]

Answer 1

您需要確保已安裝readline。 您正在使用RVM，因此可以運行：

rvm requirements

並且應該有助於確保已安裝所需的所有內容，然后執行以下操作：

rvm reinstall 2.4.1

如果需要確保您的紅寶石很好走。

Answer 2

我有完全相同的問題，但是我們使用rbenv而不是rvm 。 對Brian為我工作的類似答案：

rbenv uninstall 2.4.1
rbenv install 2.4.1

Answer 3

升級后我遇到了同樣的問題。 我的猜測是RVM會發生問題。

因此，首先卸載RVM。

rvm implode

然后，執行以下命令以再次安裝RVM

sudo apt install gnupg2
gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
cd /tmp
curl -sSL https://get.rvm.io -o rvm.sh
less /tmp/rvm.sh
cat /tmp/rvm.sh | bash -s stable --rails
source /home/admat/.rvm/scripts/rvm

重新加載RVM

rvm reload

安裝你的ruby版本

rvm install _version_

不要使用bundle命令安裝gem

bundle install

完成!!!!!

如果您想了解有關將Ruby安裝到ubuntu 18.04的更多詳細信息，請嘗試以下鏈接使用Ubuntu 18.04在軌道上安裝Ruby

Answer 4

將Ubuntu從16.04升級到18.04后，我也無法運行rails console 。 我得到了類似的東西：

-bash: error while loading shared libraries: libreadline.so.6: cannot open shared object file: No such file or directory

我不得不按照此處發布的說明再次重新安裝rvm： https : //github.com/rvm/ubuntu_rvm

Answer 5

重新安裝Ruby和重新哈希rbenv對我不起作用。 最后，我使用了當前安裝的libreadline.so7的簡單符號鏈接

locate libreadline.so

這返回了可能選項的完整列表，但是最可能使用的選項似乎是/lib/x86_64-linux-gnu/libreadline.so.7

sudo ln -s /lib/x86_64-linux-gnu/libreadline.so.7 /lib/x86_64-linux-gnu/libreadline.so.6

鏈接后，我現在可以運行rails console並再次使用byebug 。

Answer 6

在終端上運行以下代碼為我解決了這個問題：

cd /lib/x86_64-linux-gnu
sudo ln -s libreadline.so.7.0 libreadline.so.6