尝试在开发模式下访问Ruby on Rails网站时，出现以下“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 `<top (required)>'
/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 `<top (required)>'
/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 `<top (required)>'
config.ru:3:in `require'
config.ru:3:in `block in <main>'
/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 `<main>'
/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 `<module:App>'
/usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>'
/usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<main>'
我查看了
pg_ext.so正在尝试访问哪些库并使用ldd，这是输出:$ 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卸载pg和gem安装pg。但是我仍然遇到同样的问题。 gem本身已安装，没有任何错误。
我不太确定如何进一步调试。我需要做什么来安装，更新或引用必要的兼容库？
服务器正在运行:
谢谢
最佳答案
尝试:
$ gem install pg
$ gem pristine --all
关于ruby-on-rails - Rails pg gem不兼容的库版本，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33809990/