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POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
 

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  1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
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    <p>I am getting this error when running Redmine2.3-stable, and subsequently unable to install the mysql2 adapter successfully. </p> <p>This is the error:</p> <pre><code> Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2) </code></pre> <p>I'm getting this when running the website, via passenger, and when running rake db:migrate</p> <p>The adapter is installed:</p> <p>gem list</p> <p><strong>* LOCAL GEMS *</strong></p> <pre><code>actionmailer (3.2.13) actionpack (3.2.13) activemodel (3.2.13) activerecord (3.2.13) activerecord-mysql2-adapter (0.0.3) activeresource (3.2.13) activesupport (3.2.13) afm (0.2.0) arel (3.0.2) Ascii85 (1.0.2) bigdecimal (1.1.0) builder (3.0.4, 3.0.0) bundler (1.3.4) coderay (1.0.9) daemon_controller (1.1.2) daemons (1.1.9) erubis (2.7.0) eventmachine (1.0.3) fastthread (1.0.7) hashery (2.1.0) hike (1.2.1) holidays (1.0.5) i18n (0.6.1) icalendar (1.2.3) io-console (0.3) journey (1.0.4) jquery-rails (2.0.3) json (1.7.7, 1.5.4) mail (2.5.3) mime-types (1.21) minitest (4.7.0, 2.5.1) multi_json (1.7.2) mysql2 (0.3.11) net-ldap (0.3.1) nokogiri (1.5.9) open-uri-cached (0.0.5) passenger (3.0.19) pdf-reader (1.3.2) polyglot (0.3.3) prawn (0.12.0) rack (1.4.5) rack-cache (1.2) rack-openid (1.3.1) rack-ssl (1.3.3) rack-test (0.6.2) rails (3.2.13) railties (3.2.13) rake (10.0.4, 0.9.2.2) rdoc (3.12.2, 3.9.4) ruby-openid (2.1.8) ruby-rc4 (0.1.5) rubygems-update (2.0.3) sprockets (2.2.2) thin (1.5.1) thor (0.17.0) tilt (1.3.6) treetop (1.4.12) ttfunk (1.0.3) tzinfo (0.3.37) </code></pre> <p>ruby -v</p> <pre><code>ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux] </code></pre> <p>gem env</p> <pre><code>- RUBYGEMS VERSION: 2.0.3 - RUBY VERSION: 1.9.3 (2012-04-20 patchlevel 194) [x86_64-linux] - INSTALLATION DIRECTORY: /usr/local/lib/ruby/gems/1.9.1 - RUBY EXECUTABLE: /usr/local/bin/ruby - EXECUTABLE DIRECTORY: /usr/local/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-linux - GEM PATHS: - /usr/local/lib/ruby/gems/1.9.1 - /root/.gem/ruby/1.9.1 - GEM CONFIGURATION: - :update_sources =&gt; true - :verbose =&gt; true - :backtrace =&gt; false - :bulk_threshold =&gt; 1000 - REMOTE SOURCES: - https://rubygems.org/ </code></pre> <p>I tried forcing redmine to rails3.2.2 by editing the Gemfile, per a suggestion here:</p> <p><a href="https://stackoverflow.com/questions/9862080/rails-3-2-2-mysql2-adapter-error">Rails 3.2.2 mysql2 adapter Error</a></p> <p><em>Notes</em></p> <p>I had to force the gem mysql2 bundle install to work by using the command below ( i was getting errors about errormsg.h).</p> <pre><code>sudo gem install activerecord-mysql2-adapter -- --srcdir=/usr/include/mysql/ </code></pre> <p>Any thoughts?</p>
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    1. PTQuestion
    1. USCommunity
    1. USPatrick Cummins
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    1. This table or related slice is empty.
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    1. PO
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    1. VO
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      1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
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      1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
      1. USAdam
      1. VTFavorite
    1. COCan we take a look at your `database.yml` file?
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      1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
      1. USdepa
    2. COI moved back down to Ruby 1.8.7 and don't have this problem anymore.
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      1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
      1. USPatrick Cummins
    3. COCheck if you're using `adapter: mysql2` instead of `adapter: mysql` in your `database.yml`.
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      1. POError installing mysql2 adapter: Please install the mysql2 adapter: `gem install activerecord-mysql2-adapter` (cannot load such file -- mysql2/mysql2)
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