mysql2.so: libmysqlclient_r.so.15: cannot open shared object file: No such file or directory

rtacconi picture rtacconi · Dec 10, 2011 · Viewed 39.9k times · Source

I am trying to run a Rails two app with Ubuntu 10.04 server, sphinx, myql2 version 0.2.7 and percona server 5.5 (Myslql 5.5). mysql2 in irb works ok, I can connect to the db. this rails 2 app is working in another Centos server with MySql 5.1. When I run:

script/server -e production 

I get:

mysql2.so: libmysqlclient_r.so.15: cannot open shared object file: No such file or directory

here are the libs I have:

# ls -l /usr/lib |grep sql
-rw-r--r--  1 root root 10581008 2011-11-18 16:51 libmysqlclient.a
lrwxrwxrwx  1 root root       16 2011-12-10 05:48 libmysqlclient_r.a -> libmysqlclient.a
lrwxrwxrwx  1 root root       20 2011-12-10 05:48 libmysqlclient.so -> libmysqlclient.so.16
lrwxrwxrwx  1 root root       29 2011-12-10 06:01 libmysqlclient.so.15 -> /usr/lib/libmysqlclient.so.16
-rw-r--r--  1 root root     7332 2011-11-18 16:44 libmysqlservices.a
-rw-r--r--  1 root root   562520 2010-02-08 06:59 libsqlite3.a
-rw-r--r--  1 root root      973 2010-02-08 06:59 libsqlite3.la
lrwxrwxrwx  1 root root       19 2011-12-07 17:15 libsqlite3.so -> libsqlite3.so.0.8.6
lrwxrwxrwx  1 root root       19 2011-03-09 18:43 libsqlite3.so.0 -> libsqlite3.so.0.8.6
-rw-r--r--  1 root root   528668 2010-02-08 06:59 libsqlite3.so.0.8.6
drwxr-xr-x  3 root root     4096 2011-12-10 05:47 mysql

How can I fix it?

Answer

Ingusmat picture Ingusmat · Apr 29, 2012

If you encounter this error again after upgrading to 12.04 (or for people arriving here after googling the title of this page after upgrading to 12.04), the following worked for me:

gem uninstall mysql2
gem install mysql2

This will recompile the gem using libmysqlclient18, and worked for me.

Hope that helps someone out there.