libmysqlclient.so.18: cannot open shared object file: No such file or directory

<span style="font-size:24px;">错误情形：</span>

[root@localhost ~]# /usr/local/nagios/libexec/check_mysql -h
/usr/local/nagios/libexec/check_mysql: error while loading shared libraries: libmysqlclient.so.18: cannot open shared object file: No such file or directory

解决方法：当然是针对我的虚拟机情形

利用命令 ：[root@238-lamp ld.so.conf.d]#  find / -name libmysqlclient.so.18
/usr/local/mysql/lib/libmysqlclient.so.18
/home/oldboy/tools/mysql-5.6.10/libmysql/libmysqlclient.so.18

将/usr/local/mysql/lib（mysql的安装目录）路径加到/etc/ld.so.conf中

[root@238-lamp ld.so.conf.d]# vi /etc/ld.so.conf                       

include ld.so.conf.d/*.conf
/usr/local/lib
/usr/local/mysql/lib
~
~

~
"/etc/ld.so.conf" 4L, 90C written
[root@238-lamp ld.so.conf.d]# ldconfig（生效命令）       
[root@238-lamp ld.so.conf.d]# /usr/local/nagios/libexec/check_mysql -h
check_mysql v1.4.16 (nagios-plugins 1.4.16)
Copyright (c) 1999-2007 Nagios Plugin Development Team
        <[email protected]>

This program tests connections to a MySQL server


Usage:
 check_mysql [-d database] [-H host] [-P port] [-s socket]
       [-u user] [-p password] [-S]

Options:
 -h, --help
    Print detailed help screen
 -V, --version
    Print version information
 -H, --hostname=ADDRESS
    Host name, IP Address, or unix socket (must be an absolute path)
 -P, --port=INTEGER
    Port number (default: 3306)
 -s, --socket=STRING
    Use the specified socket (has no effect if -H is used)
 -d, --database=STRING
    Check database with indicated name
 -u, --username=STRING
    Connect using the indicated username
 -p, --password=STRING