1.因为要用到GLBC2.15，所以一冲动把2.12升级到了2.14
2升级方法：
rpm ：——
no% 2016-03-17 10:56:33 ☆ ruby 2.1.2p95 (system) iZ25uso7yliZ in /home/glibc
○ → rpm -qa glibc
glibc-2.12-1.166.el6_7.7.x86_64
glibc-2.12-1.166.el6_7.7.i686
no% 2016-03-17 10:56:40 ☆ ruby 2.1.2p95 (system) iZ25uso7yliZ in /home/glibc
○ → rpm -qa|grep glibc glibc-devel-2.12-1.166.el6_7.7.x86_64 glibc-2.12-1.166.el6_7.7.x86_64 glibc-devel-2.12-1.166.el6_7.7.i686 glibc-common-2.15-60.el6.x86_64 glibc-headers-2.15-60.el6.x86_64 glibc-2.12-1.166.el6_7.7.i686 glibc-utils-2.15-60.el6.x86_64 glibc-static-2.15-60.el6.x86_64
