Rails pg gem不兼容的库版本
当我尝试在开发模式下访问我的Ruby on Rails网站时，我收到以下“不兼容的库版本”错误。
incompatible library version - /var/www/vhosts/launch.site.com/httpdocs/vendor/bundle/ruby/2.2.0/gems/pg-0.18.4/lib/pg_ext.so (LoadError) /var/www/vhosts/launch.site.com/httpdocs/vendor/bundle/ruby/2.2.0/gems/pg-0.18.4/lib/pg.rb:4:in `require' /var/www/vhosts/launch.site.com/httpdocs/vendor/bundle/ruby/2.2.0/gems/pg-0.18.4/lib/pg.rb:4:in `' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `require' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `block (2 levels) in require' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `each' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `block in require' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `each' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `require' /usr/local/rvm/gems/ruby-2.2.3/gems/bundler-1.10.6/lib/bundler.rb:134:in `require' /var/www/vhosts/launch.site.com/httpdocs/config/application.rb:7:in `' /var/www/vhosts/launch.site.com/httpdocs/config/environment.rb:2:in `require' /var/www/vhosts/launch.site.com/httpdocs/config/environment.rb:2:in `' config.ru:3:in `require' config.ru:3:in `block in ' /var/www/vhosts/launch.site.com/httpdocs/vendor/bundle/ruby/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval' /var/www/vhosts/launch.site.com/httpdocs/vendor/bundle/ruby/2.2.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize' config.ru:1:in `new' config.ru:1:in `' /usr/share/passenger/helper-scripts/rack-preloader.rb:110:in `eval' /usr/share/passenger/helper-scripts/rack-preloader.rb:110:in `preload_app' /usr/share/passenger/helper-scripts/rack-preloader.rb:156:in `' /usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `' /usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `' 我已经看过pg_ext.so尝试访问和使用ldd ，这里是输出：
$ ldd pg-0.18.4/lib/pg_ext.so linux-vdso.so.1 => (0x00007ffc14a7c000) libruby.so.1.8 => /usr/lib64/libruby.so.1.8 (0x00007fe98291a000) libpq.so.5 => /usr/lib64/libpq.so.5 (0x00007fe9826f1000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fe9824cb000) librt.so.1 => /lib64/librt.so.1 (0x00007fe9822c3000) libdl.so.2 => /lib64/libdl.so.2 (0x00007fe9820be000) libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007fe981e87000) libm.so.6 => /lib64/libm.so.6 (0x00007fe981c03000) libc.so.6 => /lib64/libc.so.6 (0x00007fe98186e000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fe981658000) libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007fe9813ec000) libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007fe981008000) libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007fe980dc4000) libldap_r-2.4.so.2 => /usr/lib64/libldap_r-2.4.so.2 (0x00007fe980b6c000) /lib64/ld-linux-x86-64.so.2 (0x00007fe982e47000) libfreebl3.so => /usr/lib64/libfreebl3.so (0x00007fe980968000) libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007fe980681000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007fe98047d000) libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007fe980250000) libz.so.1 => /lib64/libz.so.1 (0x00007fe98003a000) libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007fe97fe2f000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007fe97fc2b000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00007fe97fa11000) liblber-2.4.so.2 => /usr/lib64/liblber-2.4.so.2 (0x00007fe97f802000) libsasl2.so.2 => /usr/lib64/libsasl2.so.2 (0x00007fe97f5e7000) libssl3.so => /usr/lib64/libssl3.so (0x00007fe97f3a7000) libsmime3.so => /usr/lib64/libsmime3.so (0x00007fe97f17b000) libnss3.so => /usr/lib64/libnss3.so (0x00007fe97ee3b000) libnssutil3.so => /usr/lib64/libnssutil3.so (0x00007fe97ec0f000) libplds4.so => /lib64/libplds4.so (0x00007fe97ea0b000) libplc4.so => /lib64/libplc4.so (0x00007fe97e805000) libnspr4.so => /lib64/libnspr4.so (0x00007fe97e5c7000) libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fe97e3a7000)
我尝试使用yum update更新PostgreSQL，然后使用gem uninstall pg和gem install pg。 但我继续得到同样的问题。 gem本身安装没有任何错误。
我不确定如何进一步调试。 如何安装，更新或引用必要的兼容库需要做什么？
服务器正在运行：
- CentOS 6.7
- psql（PostgreSQL）8.4.20
- ruby 2.2.3p173（2015-08-18修订版51636）[x86_64-linux]
- 铁轨4.2.4
- pggem0.18.4
谢谢
尝试：
$ gem install pg $ gem pristine --all
看起来你可能正在遭受这个错误： https ： //bitbucket.org/ged/ruby-pg/issues/229/pg_exit-improperly-linked-when-using-rvm
libruby版本应该是不同的，显然。
但是：我有相同的错误消息，我的libruby是正确的，所以我认为可能会有更多…
当我在控制台rails c调用时，我得到了同样的错误。 调用bundle exec rails c删除了该错误。
在查看https://bitbucket.org/ged/ruby-pg/issues/229/pg_ext-improperly-linked-when-using-rvm上的讨论后，我设法使其在Arch Linux上运行的唯一方法正在删除系统级的ruby，然后我做了gem uninstall pg然后是gem install pg --version 0.18.3 。 这使问题消失了。 之后我重新安装了系统范围的ruby。 在我的设置上，我没有打包取决于系统范围的ruby，所以可以删除它，但是YMMV。